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  • 自己写小测试 内容:添加,删除,修改,详情,导出,上传文件,easyui tree树

    1. 效果:效果很一般很一般,望不要吐槽,重要的是功能。

      

       添加:

     上面的批量删除:

    文件上传功能:

    树状结构代码:

    2. 代码结构:

    3.  数据库结构(很简单的用户表)

    4. 配置文件

       所使用的 maven 依赖:

    <dependencies>
        <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>4.11</version>
          <scope>test</scope>
        </dependency>
        <dependency>
          <groupId>com.rdkl.ddyun</groupId>
          <artifactId>shiro-redis</artifactId>
          <version>1.0</version>
        </dependency>
        <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-annotations</artifactId>
          <version>2.7.4</version>
        </dependency>
        <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-core</artifactId>
          <version>2.7.4</version>
        </dependency>
        <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-databind</artifactId>
          <version>2.7.4</version>
        </dependency>
        <dependency>
          <groupId>com.fasterxml.jackson.jr</groupId>
          <artifactId>jackson-jr-all</artifactId>
          <version>2.7.4</version>
        </dependency>
        <dependency>
          <groupId>org.codehaus.jackson</groupId>
          <artifactId>jackson-core-asl</artifactId>
          <version>1.9.13</version>
        </dependency>
        <dependency>
          <groupId>org.codehaus.jackson</groupId>
          <artifactId>jackson-mapper-asl</artifactId>
          <version>1.9.13</version>
        </dependency>
        <dependency>
          <groupId>net.sf.json-lib</groupId>
          <artifactId>json-lib</artifactId>
          <version>2.4</version>
          <classifier>jdk15</classifier>
        </dependency>
        <dependency>
          <groupId>redis.clients</groupId>
          <artifactId>jedis</artifactId>
          <version>2.8.0</version>
        </dependency>
        <dependency>
          <groupId>org.quartz-scheduler</groupId>
          <artifactId>quartz</artifactId>
          <version>2.2.1</version>
        </dependency>
        <dependency>
          <groupId>com.baidu.ueditor</groupId>
          <artifactId>ueditor</artifactId>
          <version>1.1.2</version>
        </dependency>
        <dependency>
          <groupId>com.google.zxing</groupId>
          <artifactId>core</artifactId>
          <version>3.3.0</version>
        </dependency>
        <dependency>
          <groupId>com.google.zxing</groupId>
          <artifactId>javase</artifactId>
          <version>3.3.0</version>
        </dependency>
        <dependency>
          <groupId>com.thoughtworks.xstream</groupId>
          <artifactId>xstream</artifactId>
          <version>1.4.7</version>
        </dependency>
        <dependency>
          <groupId>com.qq.connect</groupId>
          <artifactId>Sdk4J</artifactId>
          <version>1.0</version>
        </dependency>
        <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis</artifactId>
          <version>3.1.0</version>
        </dependency>
        <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis-spring</artifactId>
          <version>1.1.1</version>
        </dependency>
        <dependency>
          <groupId>mysql</groupId>
          <artifactId>mysql-connector-java</artifactId>
          <version>5.1.30</version>
        </dependency>
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-orm</artifactId>
          <version>${spring.version}</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-webmvc</artifactId>
          <version>4.2.4.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-web</artifactId>
          <version>4.2.4.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-context</artifactId>
          <version>4.2.4.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-aop -->
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-aop</artifactId>
          <version>4.2.4.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-aspects -->
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-aspects</artifactId>
          <version>4.2.4.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/aspectj/aspectjrt -->
        <dependency>
          <groupId>aspectj</groupId>
          <artifactId>aspectjrt</artifactId>
          <version>1.5.4</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/aspectj/aspectjweaver -->
        <dependency>
          <groupId>aspectj</groupId>
          <artifactId>aspectjweaver</artifactId>
          <version>1.5.4</version>
        </dependency>
        <!--以前用的版本是 4.3.16========================================================================================-->
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-core</artifactId>
          <version>4.2.4.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-jdbc</artifactId>
          <version>4.2.4.RELEASE</version>
        </dependency>
        <dependency>
          <groupId>commons-logging</groupId>
          <artifactId>commons-logging</artifactId>
          <version>1.1.3</version>
        </dependency>
        <dependency>
          <groupId>com.rdkl.ddyun</groupId>
          <artifactId>shiro-redis</artifactId>
          <version>1.0</version>
        </dependency>
        <dependency>
          <groupId>redis.clients</groupId>
          <artifactId>jedis</artifactId>
          <version>2.8.0</version>
        </dependency>
        <dependency>
          <groupId>org.freemarker</groupId>
          <artifactId>freemarker</artifactId>
          <version>2.3.23</version>
        </dependency>
        <dependency>
          <groupId>commons-io</groupId>
          <artifactId>commons-io</artifactId>
          <version>2.4</version>
        </dependency>
        <dependency>
          <groupId>commons-codec</groupId>
          <artifactId>commons-codec</artifactId>
          <version>1.10</version>
        </dependency>
        <dependency>
          <groupId>redis.clients</groupId>
          <artifactId>jedis</artifactId>
          <version>2.8.1</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.im4java/im4java -->
        <dependency>
          <groupId>org.im4java</groupId>
          <artifactId>im4java</artifactId>
          <version>1.4.0</version>
        </dependency>
        <dependency>
          <groupId>org.apache.httpcomponents</groupId>
          <artifactId>httpcore</artifactId>
          <version>4.4.4</version>
        </dependency>
        <dependency>
          <groupId>com.alibaba</groupId>
          <artifactId>fastjson</artifactId>
          <version>1.2.47</version>
        </dependency>
        <dependency>
          <groupId>com.alibaba</groupId>
          <artifactId>druid</artifactId>
          <version>1.0.13</version>
        </dependency>
    
        <dependency>
          <groupId>com.thoughtworks.xstream</groupId>
          <artifactId>xstream</artifactId>
          <version>1.4.7</version>
        </dependency>
        <!-- poi -->
        <dependency>
          <groupId>org.apache.poi</groupId>
          <artifactId>poi</artifactId>
          <version>${poi.version}</version>
        </dependency>
        <dependency>
          <groupId>org.apache.poi</groupId>
          <artifactId>poi-ooxml</artifactId>
          <version>${poi.version}</version>
        </dependency>
    
        <dependency>
          <groupId>org.apache.poi</groupId>
          <artifactId>poi-ooxml-schemas</artifactId>
          <exclusions>
            <exclusion>
              <groupId>xerces</groupId>
              <artifactId>xercesImpl</artifactId>
            </exclusion>
          </exclusions>
          <version>${poi.version}</version>
        </dependency>
        <!-- sax 读取时候用到的 -->
        <dependency>
          <groupId>xerces</groupId>
          <artifactId>xercesImpl</artifactId>
          <version>${xerces.version}</version>
          <optional>true</optional>
        </dependency>
        <dependency>
          <groupId>org.apache.poi</groupId>
          <artifactId>poi-scratchpad</artifactId>
          <version>${poi.version}</version>
          <optional>true</optional>
        </dependency>
        <!-- google 工具类 -->
        <dependency>
          <groupId>com.google.guava</groupId>
          <artifactId>guava</artifactId>
          <version>${guava.version}</version>
        </dependency>
        <!-- PDF -->
        <dependency>
          <groupId>com.itextpdf</groupId>
          <artifactId>itextpdf</artifactId>
          <version>5.5.6</version>
          <optional>true</optional>
        </dependency>
        <dependency>
          <groupId>com.itextpdf</groupId>
          <artifactId>itext-asian</artifactId>
          <version>5.2.0</version>
          <optional>true</optional>
        </dependency>
        <dependency>
          <groupId>javax.validation</groupId>
          <artifactId>validation-api</artifactId>
          <version>1.1.0.Final</version>
        </dependency>
        <dependency>
          <groupId>jave</groupId>
          <artifactId>jave</artifactId>
          <version>1.0.2</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/cglib/cglib-nodep -->
        <dependency>
          <groupId>cglib</groupId>
          <artifactId>cglib-nodep</artifactId>
          <version>2.1_3</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/cglib/cglib -->
        <dependency>
          <groupId>cglib</groupId>
          <artifactId>cglib</artifactId>
          <version>2.1_3</version>
        </dependency>
        <dependency>
          <groupId>org.hibernate</groupId>
          <artifactId>hibernate-validator</artifactId>
          <version>5.2.4.Final</version>
        </dependency>
    
        <dependency>
          <groupId>javax.servlet.jsp.jstl</groupId>
          <artifactId>jstl-api</artifactId>
          <version>1.2</version>
        </dependency>
        <dependency>
          <groupId>javax.servlet.jsp</groupId>
          <artifactId>jsp-api</artifactId>
          <version>2.2</version>
          <scope>provided</scope>
        </dependency>
        <dependency>
          <groupId>javax.servlet</groupId>
          <artifactId>javax.servlet-api</artifactId>
          <version>3.1.0</version>
          <scope>provided</scope>
        </dependency>
        <!--为了使用jsp页面的jstl的依赖-->
        <!-- https://mvnrepository.com/artifact/taglibs/standard -->
        <dependency>
          <groupId>taglibs</groupId>
          <artifactId>standard</artifactId>
          <version>1.1.2</version>
        </dependency>
      <!--日志文件正常使用-->
        <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
        <!--<dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-api</artifactId>
          <version>1.7.25</version>
        </dependency>-->
    
        <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-nop -->
       <!-- <dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-nop</artifactId>
          <version>1.7.25</version>
          <scope>test</scope>
        </dependency>-->
        <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-simple -->
        <!--<dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-simple</artifactId>
          <version>1.7.25</version>
          <scope>test</scope>
        </dependency>-->
        <!-- https://mvnrepository.com/artifact/log4j/log4j -->
        <dependency>
          <groupId>log4j</groupId>
          <artifactId>log4j</artifactId>
          <version>1.2.17</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-log4j12 -->
       <!-- <dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-log4j12</artifactId>
          <version>1.7.25</version>
          <scope>test</scope>
        </dependency>-->
    
        <!-- https://mvnrepository.com/artifact/net.sourceforge.jexcelapi/jxl -->
        <!-- 导出excel表格需要的依赖 -->
        <dependency>
          <groupId>net.sourceforge.jexcelapi</groupId>
          <artifactId>jxl</artifactId>
          <version>2.6</version>
        </dependency>
        <!--上传文件使用-->
        <!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload -->
        <dependency>
          <groupId>commons-fileupload</groupId>
          <artifactId>commons-fileupload</artifactId>
          <version>1.3.1</version>
        </dependency>
          <dependency>
              <groupId>dom4j</groupId>
              <artifactId>dom4j</artifactId>
              <version>1.6.1</version>
          </dependency>
    
      </dependencies>
    

      mybatis的配置  mybatis-config.xml  :

    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
    <configuration>
        <settings>
            <!--相关联内容都会被初始化加载   true时延迟加载启动-->
            <setting name="lazyLoadingEnabled" value="false"/>
        </settings>
        <!--设置别名-->
        <typeAliases>
            <typeAlias type="com.rdkl.young.entity.User" alias="User"/>
        </typeAliases>
        <plugins>
    		<plugin interceptor="com.rdkl.young.plugin.PagePlugin">
    			<property name="dialect" value="mysql" />
    			<property name="pageSqlId" value=".*listPage.*" />
    		</plugin>
    	</plugins>
    	
    </configuration>
    

      application.properties 数据源的配置:

    jdbc.driver=com.mysql.jdbc.Driver
    jdbc.url=jdbc:mysql://127.0.0.1:3306/young?useUnicode=true&characterEncoding=utf8
    jdbc.username=root
    jdbc.password=root
    jdbc.initialSize=3
    jdbc.minIdle=2
    jdbc.maxActive=60
    jdbc.maxWait=60000
    jdbc.timeBetweenEvictionRunsMillis=60000
    jdbc.minEvictableIdleTimeMillis=30000
    jdbc.validationQuery=select 1
    jdbc.testWhileIdle=true
    jdbc.testOnBorrow=false
    jdbc.testOnReturn=false
    jdbc.poolPreparedStatements=true
    jdbc.maxPoolPreparedStatementPerConnectionSize=20
    jdbc.removeAbandoned=true
    jdbc.removeAbandonedTimeout=120
    jdbc.logAbandoned=false
    jdbc.filters=stat
    

      spring的配置 applicationContext.xml 

    <?xml version="1.0" encoding="utf-8"?>
    
    <beans xmlns="http://www.springframework.org/schema/beans"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:tx="http://www.springframework.org/schema/tx"
           xmlns:context="http://www.springframework.org/schema/context"
           xmlns:aop="http://www.springframework.org/schema/aop"
           xmlns:cache="http://www.springframework.org/schema/cache"
           xsi:schemaLocation="http://www.springframework.org/schema/beans
    	   http://www.springframework.org/schema/beans/spring-beans.xsd
    	   http://www.springframework.org/schema/tx
    	   http://www.springframework.org/schema/tx/spring-tx.xsd
    	   http://www.springframework.org/schema/context
    	   http://www.springframework.org/schema/context/spring-context.xsd
    	   http://www.springframework.org/schema/aop
    	   http://www.springframework.org/schema/aop/spring-aop.xsd
    	   http://www.springframework.org/schema/cache
    	   http://www.springframework.org/schema/cache/spring-cache.xsd">
    
        <!--加载properties配置文件-->
        <context:property-placeholder location="classpath:application.properties" />
        <!--扫描service层-->
        <context:component-scan base-package="com.rdkl.young.service" annotation-config="true">
            <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
        </context:component-scan>
        <!--记载事物管理器-->
        <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
            <property name="dataSource" ref="dataSource" />
        </bean>
    
        <!--数据源的配置-->
        <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" >
           <!-- <property name="driverClassName" value="${jdbc.driver}"/>-->
            <property name="url" value="${jdbc.url}" />
            <property name="username" value="${jdbc.username}" />
            <property name="password" value="${jdbc.password}" />
            <property name="initialSize" value="${jdbc.initialSize}" />
            <property name="minIdle" value="${jdbc.minIdle}" />
            <property name="maxActive" value="${jdbc.maxActive}" />
            <property name="maxWait" value="${jdbc.maxWait}" />
            <property name="timeBetweenEvictionRunsMillis" value="${jdbc.timeBetweenEvictionRunsMillis}" />
            <property name="minEvictableIdleTimeMillis" value="${jdbc.minEvictableIdleTimeMillis}" />
            <property name="validationQuery" value="${jdbc.validationQuery}" />
            <property name="testWhileIdle" value="${jdbc.testWhileIdle}" />
            <property name="testOnBorrow" value="${jdbc.testOnBorrow}" />
            <property name="testOnReturn" value="${jdbc.testOnReturn}" />
            <property name="removeAbandoned" value="${jdbc.removeAbandoned}" />
            <property name="removeAbandonedTimeout" value="${jdbc.removeAbandonedTimeout}" />
            <property name="filters" value="${jdbc.filters}" />
        </bean>
        <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
            <property name="dataSource" ref="dataSource" />
            <property name="configLocation" value="classpath:mybatis-config.xml" />
            <property name="mapperLocations" value="classpath:com/rdkl/young/mapper/*.xml" />
            <property name="typeAliasesPackage" value="com.rdkl.young.entity" />
        </bean>
        <!--配置dao层  自动扫描,将dao中的接口生成代理注入到spring,供给类使用-->
        <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
            <property name="basePackage" value="com.rdkl.young.dao" />
            <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        </bean>
    
        <!--注解式事物-->
        <tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true" />
    </beans>
    

      springmvc的配置   spring-mvc.xml

    <?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
           xmlns:task="http://www.springframework.org/schema/task" xmlns:mvc="http://www.springframework.org/schema/mvc"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
           xmlns:context="http://www.springframework.org/schema/context"
           xmlns:aop="http://www.springframework.org/schema/aop"
           xsi:schemaLocation="http://www.springframework.org/schema/beans
    	http://www.springframework.org/schema/beans/spring-beans.xsd
    	http://www.springframework.org/schema/context
    	http://www.springframework.org/schema/context/spring-context-4.0.xsd
    	http://www.springframework.org/schema/task
    	http://www.springframework.org/schema/task/spring-task-4.0.xsd
    	http://www.springframework.org/schema/mvc
    	http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
    	http://www.springframework.org/schema/aop
    	http://www.springframework.org/schema/aop/spring-aop-4.0.xsd">
    
        <!-- proxy-target-class属性值决定是基于接口的还是基于类的代理被创建。如果proxy-target-class 属性值被设置为true,那么基于类的代理将起作用
        (这时需要cglib库)。如果proxy-target-class属值被设置为false或者这个属性被省略,那么标准的JDK 基于接口的代理
        -->
        <aop:aspectj-autoproxy proxy-target-class="true"/>
        <!--下面一行的作用:可以使用@Controller注解,-->
        <context:component-scan base-package="com.rdkl.young.controller"/>
    
        <!-- aop 实现记录日志功能 -->
    
        <mvc:default-servlet-handler />
        <!--对静态资源的支持-->
        <mvc:resources mapping="/images/**" location="/images/" />
        <mvc:resources mapping="/css/**" location="/css/" />
        <mvc:resources mapping="/js/**" location="/js/" />
        <!--对json格式的设定-->
        <mvc:annotation-driven>
            <!-- 消息转换使用json格式 -->
            <mvc:message-converters>
                <!--先进行string转换 可以解决字符串输出有双引号的问题 -->
                <bean class="org.springframework.http.converter.StringHttpMessageConverter" />
                <bean
                        class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
                    <property name="supportedMediaTypes">
                        <list>
                            <value>text/html;charset=UTF-8</value>
                            <value>text/plain;charset=UTF-8</value>
                            <value>application/json;charset=UTF-8</value>
                        </list>
                    </property>
                    <property name="prettyPrint" value="true" />
                </bean>
            </mvc:message-converters>
        </mvc:annotation-driven>
    
        <!-- 视图解析器 -->
        <bean id="viewResolver"
              class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            <property name="prefix" value="/WEB-INF/views/" />
            <property name="suffix" value=".jsp"/>
            <property name="order" value="1" />
            <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
        </bean>
    
        <!-- 上传文件定义大小 -->
        <bean id="multipartResolver"
              class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
            <!-- 默认编码格式 -->
            <property name="defaultEncoding" value="UTF-8" />
            <!-- 文件大小最大值 -->
            <property name="maxUploadSize" value="10485760000" />
            <!-- 内存中的最大值 -->
            <property name="maxInMemorySize" value="40960" />
        </bean>
    
       <!-- <aop:config proxy-target-class="true"/>-->
    
    
    </beans>
    

      log4j.properties 日志文件的配置

    # Output pattern : date [thread] priority category - message
    log4j.rootLogger=INFO, stdout, logfile
    
    log4j.appender.stdout=org.apache.log4j.ConsoleAppender
    log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
    log4j.appender.stdout.layout.ConversionPattern=[%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS}: %-4r - method:%l%n%m%n
    
    log4j.appender.logfile=org.apache.log4j.DailyRollingFileAppender
    log4j.appender.logfile.file=${webRoot}/log/log
    log4j.appender.logfile.DatePattern= '.'yyyy-MM-dd'.log'
    log4j.appender.logfile.Append=true
    log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
    log4j.appender.logfile.layout.ConversionPattern=[%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS}: %-4r - method:%l%n%m%n
    
    #mybatis logger config
    log4j.logger.org.apache.ibatis=INFO
    log4j.logger.java.sql.Connection=debug
    log4j.logger.java.sql.Statement=debug
    log4j.logger.java.sql.PreparedStatement=debug
    

      web.xml 文件的配置

    <?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee"
             xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
             id="WebApp_ID" version="3.0">
      <display-name>Archetype Created Web Application</display-name>
      <!--spring的配置-->
        <context-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath*:applicationContext.xml</param-value>
        </context-param>
        <listener>
            <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
        </listener>
        <context-param>
            <param-name>webAppRootKeySite</param-name>
            <param-value>webRoot</param-value>
        </context-param>
        <context-param>
            <param-name>log4jConfigLocation</param-name>
            <param-value>classpath:log4j.properties</param-value>
        </context-param>
    
        <listener>
            <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
        </listener>
        <listener>
            <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
        </listener>
        <!--解决post乱码-->
        <filter>
            <filter-name>encodingFilter</filter-name>
            <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
            <init-param>
                <param-name>encoding</param-name>
                <param-value>UTF-8</param-value>
            </init-param>
            <init-param>
                <param-name>forceEncoding</param-name>
                <param-value>true</param-value>
            </init-param>
        </filter>
    
        <filter-mapping>
            <filter-name>encodingFilter</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
    
        <servlet>
            <servlet-name>dispatcher</servlet-name>
            <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
            <init-param>
                <param-name>contextConfigLocation</param-name>
                <param-value>classpath:spring-mvc.xml</param-value>
            </init-param>
            <load-on-startup>1</load-on-startup>
        </servlet>
        <servlet-mapping>
            <servlet-name>dispatcher</servlet-name>
            <url-pattern>/</url-pattern>
        </servlet-mapping>
        <welcome-file-list>
            <welcome-file>/WEB-INF/views/jsps/one.jsp</welcome-file>
        </welcome-file-list>
    </web-app>
    

     5.  首页面功能详解

    (1)实体类:

    package com.rdkl.young.entity;
    
    import org.springframework.format.annotation.DateTimeFormat;
    
    import java.io.Serializable;
    import java.util.Date;
    import java.util.List;
    
    public class User implements Serializable {
        private Long uid;
        private String uname; // 用户名
        private String loginname; // 登录名
        private String password; // 密码
        private String emile; // 邮箱
        @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
        private Date createtime; // 创建时间
        private String file;  // 上传文件地址
        private String fileName;  // 上传文件名
    
        /*获取自身集合*/
        private List<User> userList;
    
        public String getFileName() {
            return fileName;
        }
    
        public void setFileName(String fileName) {
            this.fileName = fileName;
        }
    
        public String getFile() {
            return file;
        }
    
        public void setFile(String file) {
            this.file = file;
        }
    
        public Long getUid() {
            return uid;
        }
    
        public void setUid(Long uid) {
            this.uid = uid;
        }
    
        public String getUname() {
            return uname;
        }
    
        public void setUname(String uname) {
            this.uname = uname;
        }
    
        public String getLoginname() {
            return loginname;
        }
    
        public void setLoginname(String loginname) {
            this.loginname = loginname;
        }
    
        public String getPassword() {
            return password;
        }
    
        public void setPassword(String password) {
            this.password = password;
        }
    
        public String getEmile() {
            return emile;
        }
    
        public void setEmile(String emile) {
            this.emile = emile;
        }
    
        public Date getCreatetime() {
            return createtime;
        }
    
        public void setCreatetime(Date createtime) {
            this.createtime = createtime;
        }
    
        public List<User> getUserList() {
            return userList;
        }
    
        public void setUserList(List<User> userList) {
            this.userList = userList;
        }
    
    }

     使用到的分页工具类:Page.java

    package com.rdkl.young.entity;
    
    public class Page {
    	private int pageSize = 10; //每页显示记录数
    	private int totalPage;		//总页数
    	private int totalCount;	//总记录数
    	private int pageNo;	//当前页
    	private int currentIndex;	//当前记录起始索引
    	private boolean entityOrField;	//true:需要分页的地方,传入的参数就是Page实体;false:需要分页的地方,传入的参数所代表的实体拥有Page属性
    	
    	public int getTotalPage() {
    		if(totalCount%pageSize==0)
    			totalPage = totalCount/pageSize;
    		else
    			totalPage = totalCount/pageSize+1;
    		return totalPage;
    	}
    	public void setTotalPage(int totalPage) {
    		this.totalPage = totalPage;
    	}
    	
    	public int getTotalCount() {
    		return totalCount;
    	}
    	public void setTotalCount(int totalCount) {
    		this.totalCount = totalCount;
    	}
    	public int getPageNo() {
    		if(pageNo<=0)
    			pageNo = 1;
    		if(pageNo>getTotalPage())
    			pageNo = getTotalPage();
    		return pageNo;
    	}
    	public void setPageNo(int pageNo) {
    		this.pageNo = pageNo;
    	}
    	
    	public int getPageSize() {
    		return pageSize;
    	}
    	public void setPageSize(int pageSize) {
    		this.pageSize = pageSize;
    	}
    	public int getCurrentIndex() {
    		currentIndex = (getPageNo()-1)*getPageSize();
    		if(currentIndex<0)
    			currentIndex = 0;
    		return currentIndex;
    	}
    	public void setCurrentIndex(int currentIndex) {
    		this.currentIndex = currentIndex;
    	}
    	public boolean isEntityOrField() {
    		return entityOrField;
    	}
    	public void setEntityOrField(boolean entityOrField) {
    		this.entityOrField = entityOrField;
    	}
    	
    }
    

     dao层 代码:

    package com.rdkl.young.dao;
    
    import com.rdkl.young.entity.User;
    import org.springframework.stereotype.Repository;
    
    import java.util.List;
    import java.util.Map;
    
    @Repository
    public interface UserMapper {
        List<User> myPageAllUser();
        /* 根据条件查询用户全部信息 */
        List<User> listPageAllUser(Map<String,Object> map);
        /* 根据用户id查询 */
        User getByID(Long uid);
        /* 修改 */
        void updataUser(User user);
        /* 添加 */
        void insertUser(User uu);
        /* 删除 */
        void delUser(Map<String,Object> map);
    }
    

      service 层:

    package com.rdkl.young.service;
    
    import com.rdkl.young.entity.User;
    import com.rdkl.young.dao.UserMapper;
    import jxl.CellView;
    import jxl.format.Alignment;
    import jxl.format.Colour;
    import jxl.format.UnderlineStyle;
    import jxl.format.VerticalAlignment;
    import jxl.write.*;
    import org.apache.commons.lang.StringUtils;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    import org.springframework.transaction.annotation.Transactional;
    
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import java.io.*;
    import java.net.URLEncoder;
    import java.text.SimpleDateFormat;
    import java.util.ArrayList;
    import java.util.List;
    import java.util.Map;
    
    @Service
    @Transactional
    public class UserService {
        @Autowired
        private UserMapper userMapper; /*这里spring的severity的值设置为”warning”, 降低Autowired检测的级别 不然会报红线 但是对运行项目没影响*/
    
        public List<User> myPageAllUser(){
            return userMapper.myPageAllUser();
        }
    
        public List<User> listPageAllUser(Map<String,Object> map){
            return userMapper.listPageAllUser(map);
        }
    
        public User getByID(Long uid) {
            return userMapper.getByID(uid);
        }
        public void updataUser(User user){
            userMapper.updataUser(user);
        }
    
        public void insertUser(User uu) {
            userMapper.insertUser(uu);
        }
    
        public void delUser(Map<String,Object> map) {
    
            userMapper.delUser(map);
        }
    
        /**
         * id放入list
         *
         * @param id
         * id(多个已逗号分隔)
         * @return List集合
         */
    
        public List<String> getList(String id) {
            List<String> list = new ArrayList<String>();
            String[] str = id.split(",");
            for (int i = 0; i < str.length; i++) {
                list.add(str[i]);
            }
            return list;
    
        }
    
        /**
         * 导出数据成excel表格
         * @param response
         * @param listUser
         * @param
         */
        public void exportUser(HttpServletRequest request,HttpServletResponse response, List<User> listUser) {
            WritableWorkbook wwb = null;
            OutputStream os = null;
            SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
            try {
                os = response.getOutputStream();// 取得输出流
                response.reset();// 清空输出流
                // excel 文件的 MIME 类型
                response.setContentType("application/msexcel");
                //在导出前对名称根据浏览器做下处理
                String agent = request.getHeader("USER-AGENT").toLowerCase();
                response.setContentType("application/vnd.ms-excel");
                //***************很重要
                String fileName = "问卷调查";//文件名中文乱码
                String codedFileName = java.net.URLEncoder.encode(fileName, "UTF-8");
                if (agent.contains("firefox")) {
                    response.setCharacterEncoding("utf-8");
                    response.setHeader("content-disposition", "attachment;filename=" + new String(fileName.getBytes(), "ISO8859-1") + ".xls");
                } else {
                    response.setHeader("content-disposition", "attachment;filename=" + codedFileName + ".xls");
                }
    
    
              /*  response.setHeader("Content-disposition",
                        "attachment; filename=courseStatistics.xls");// 设定输出文件头
                response.setContentType("application/msexcel");// 定义输出类型*/
                // os = new FileOutputStream(fileName);
                wwb = jxl.Workbook.createWorkbook(os);
                WritableSheet ws = wwb.createSheet("课程统计", 10); // 创建一个工作表
    
                // 设置标题单元格的文字格式
                WritableFont titleFont = new WritableFont(WritableFont.createFont("宋体"), 12,
                        WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
                WritableCellFormat titleFontFormat = new WritableCellFormat(titleFont);
                titleFontFormat.setVerticalAlignment(VerticalAlignment.CENTRE);
                titleFontFormat.setAlignment(Alignment.CENTRE);
                titleFontFormat.setBackground(Colour.LIGHT_TURQUOISE);
                /*======================================================================第二种标题====================================*/
                WritableFont titleFont1 = new WritableFont(WritableFont.createFont("宋体"), 12,
                        WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
                WritableCellFormat titleFontFormat1 = new WritableCellFormat(titleFont1);
                titleFontFormat1.setVerticalAlignment(VerticalAlignment.CENTRE);
                titleFontFormat1.setAlignment(Alignment.CENTRE);
                titleFontFormat1.setBackground(Colour.LAVENDER);
                /*=======================================================================第三种标题===================================*/
                WritableFont titleFont2 = new WritableFont(WritableFont.createFont("宋体"), 12,
                        WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
                WritableCellFormat titleFontFormat2 = new WritableCellFormat(titleFont2);
                titleFontFormat2.setVerticalAlignment(VerticalAlignment.CENTRE);
                titleFontFormat2.setAlignment(Alignment.CENTRE);
                titleFontFormat2.setBackground(Colour.LIGHT_GREEN);
                /*=======================================================================第四种标题===================================*/
                WritableFont titleFont3 = new WritableFont(WritableFont.createFont("宋体"), 12,
                        WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
                WritableCellFormat titleFontFormat3 = new WritableCellFormat(titleFont3);
                titleFontFormat3.setVerticalAlignment(VerticalAlignment.CENTRE);
                titleFontFormat3.setAlignment(Alignment.CENTRE);
                titleFontFormat3.setBackground(Colour.LIGHT_ORANGE);
    
                 /*=======================================================================第五种标题===================================*/
                WritableFont titleFont4 = new WritableFont(WritableFont.createFont("宋体"), 12,
                        WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
                WritableCellFormat titleFontFormat4 = new WritableCellFormat(titleFont4);
                titleFontFormat4.setVerticalAlignment(VerticalAlignment.CENTRE);
                titleFontFormat4.setAlignment(Alignment.CENTRE);
                titleFontFormat4.setBackground(Colour.YELLOW);
    
                // 设置内容数据单元格的文字格式
                WritableFont cellFont = new WritableFont(WritableFont.createFont("宋体"), 12,
                        WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
                WritableCellFormat cellFontFormat = new WritableCellFormat(cellFont);
                cellFontFormat.setVerticalAlignment(VerticalAlignment.CENTRE);//垂直居中
                cellFontFormat.setAlignment(Alignment.CENTRE);//文字对齐方式
    
    
                WritableFont firstCellFont = new WritableFont(WritableFont.createFont("宋体"), 12,
                        WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
                WritableCellFormat firstCellFontFormat = new WritableCellFormat(firstCellFont);
    
                ws.getSettings().setDefaultColumnWidth(18);
                ws.getSettings().setDefaultRowHeight(300);
                ws.setColumnView(0, 26);
                ws.setColumnView(1, 26);
                ws.setColumnView(2, 24);
                ws.setColumnView(3, 24);
                ws.setColumnView(12, 24);
                ws.setColumnView(13, 24);
                ws.setColumnView(14, 24);
                ws.setColumnView(15, 24);
                ws.setColumnView(16, 24);
                ws.setColumnView(17, 24);
                ws.setColumnView(18, 24);
                // 填充标题
                //ws.addCell(new Label(0, 0, "课程知识点规划", titleFontFormat));
                //ws.mergeCells(0, 0, 3, 0);//合并单元格 第一个参数从哪个列开始合并,第二个参数为第几行,第三个参数为到那一列结束,第四个参数为合并几行
    
                ws.addCell(new Label(0, 0, "用户名", titleFontFormat));
                ws.mergeCells(0, 0, 0, 1);
                for (int j = 0; j < listUser.size(); j++) {
                    User entity = listUser.get(j);
                    ws.addCell(new Label(0, j + 2, "" + entity.getUname(),
                            firstCellFontFormat));
                }
    
                ws.addCell(new Label(1, 0, "可以登录", titleFontFormat));
                ws.addCell(new Label(1, 1, "登录名", titleFontFormat));
                for (int j = 0; j < listUser.size(); j++) {
                    User entity = listUser.get(j);
                    ws.addCell(new Label(1, j + 2, "" + entity.getLoginname(),
                            firstCellFontFormat));
                }
                ws.addCell(new Label(2, 1, "邮箱", titleFontFormat));
                for (int j = 0; j < listUser.size(); j++) {
                    User entity = listUser.get(j);
                    ws.addCell(new Label(2, j + 2, "" + entity.getEmile(),
                            firstCellFontFormat));
                }
                ws.mergeCells(1, 0, 2, 0); // 向右合并6列单元格
    
                ws.addCell(new Label(3, 0, "创建时间", titleFontFormat));
                ws.mergeCells(3, 0, 0, 1);
                for (int j = 0; j < listUser.size(); j++) {
                    User entity = listUser.get(j);
                    ws.addCell(new Label(3, j + 2, "" + df.format(entity.getCreatetime()),
                            cellFontFormat));
                }
                ws.toString();
                wwb.write();
    
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                try {
                    if (wwb != null) {
                        wwb.close();
                    }
                    if (os != null) {
                        os.close();
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
    
    
        }
    
        public void download(String path,String fileName,HttpServletRequest request, HttpServletResponse response) throws IOException{
            BufferedInputStream buff = null;
            FileInputStream fis = null;
            OutputStream myout = null;
            try {
                String finalFileName = null;
                // 获取浏览器代理信息
                final String userAgent = request.getHeader("USER-AGENT");
                if(StringUtils.contains(userAgent, "MSIE")||StringUtils.contains(userAgent,"Trident")){//IE浏览器
                    finalFileName = URLEncoder.encode(fileName,"UTF8");
                    System.out.println("IE浏览器");
                }else if(StringUtils.contains(userAgent, "Mozilla")){//google,火狐浏览器
                    finalFileName = new String(fileName.getBytes(), "ISO8859-1");
                }else{
                    finalFileName = URLEncoder.encode(fileName,"UTF8");//其他浏览器
                }
                File file = new File(path);
                response.setCharacterEncoding("UTF-8");
                response.setHeader("Content-Disposition",
                        "attachment; filename=" + finalFileName);
                response.setContentLength((int) file.length());
                response.setContentType("application/zip");// 定义输出类型
                fis = new FileInputStream(file);
                buff = new BufferedInputStream(fis);
                byte[] b = new byte[1024];// 相当于我们的缓存
                long k = 0;// 该值用于计算当前实际下载了多少字节
                myout = response.getOutputStream();// 从response对象中得到输出流,准备下载
                // 开始循环下载
                while (k < file.length()) {
                    int j = buff.read(b, 0, 1024);
                    k += j;
                    myout.write(b, 0, j);
                }
                myout.flush();
    
            } catch (Exception e) {
                System.out.println(e);
            }  finally {
                if(buff != null){
                    buff.close();
                }
                if(fis != null){
                    fis.close();
                }
                if(myout != null){
                    myout.close();
                }
            }
        }
    }
    

      controller 层:

    package com.rdkl.young.controller;
    
    import com.alibaba.fastjson.JSON;
    import com.alibaba.fastjson.JSONObject;
    import com.alibaba.fastjson.serializer.SerializerFeature;
    import com.rdkl.young.entity.Page;
    import com.rdkl.young.entity.User;
    import com.rdkl.young.service.UserService;
    import com.rdkl.young.utils.DateTimeUtils;
    import com.rdkl.young.utils.EncodingDetect;
    import com.rdkl.young.utils.HttpUtils;
    import org.apache.commons.io.FileUtils;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Controller;
    import org.springframework.ui.Model;
    import org.springframework.web.bind.annotation.*;
    import org.apache.commons.lang.StringUtils;
    import org.springframework.web.multipart.MultipartFile;
    
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import java.io.*;
    import java.net.URL;
    import java.text.SimpleDateFormat;
    import java.util.*;
    
    @RequestMapping("test")
    @Controller
    public class UserTestController {
        private static final Logger logger= LoggerFactory.getLogger(UserTestController.class);
        @Autowired
        private UserService userService;
    
        @RequestMapping("/shouye")
        public String shouye(Model model){
            return "jsps/two";
        }
    
        @RequestMapping(value="/twouser", produces = "application/json;charset=UTF-8")
        @ResponseBody
        public String twouser(HttpServletRequest request, HttpServletResponse response,Page page){
            JSONObject jsonObject= new JSONObject();
            String pageSize = request.getParameter("rows");
            if (StringUtils.isBlank(pageSize)){
                pageSize="15";
            }
            String pageNo = request.getParameter("page");
            if (StringUtils.isBlank(pageNo)){
                pageNo="1";
            }
            page.setPageSize(Integer.parseInt(pageSize));
            page.setPageNo(Integer.parseInt(pageNo));
            Map<String,Object> map=new HashMap<String, Object>();
            map.put("page",page);
            List<User> listUser = userService.listPageAllUser(map);
            if(listUser.size()>0){
                jsonObject.put("rows",listUser);
                jsonObject.put("total",page.getTotalCount());
            }
            return jsonObject.toJSONString(jsonObject, SerializerFeature.WriteDateUseDateFormat);
        }
    
        @RequestMapping(value = "/sanye/{uid}",produces = "application/json;charset=UTF-8")
        public String sanye(Model model, @PathVariable("uid")Long uid){
            User u=userService.getByID(uid);
            model.addAttribute("user",u);
            model.addAttribute("uid",uid);
            return "jsps/three";
        }
    
        @RequestMapping(value = "/updata", produces = "application/json;charset=UTF-8")
        @ResponseBody
        public String detupdata(User uu){
            JSONObject result = new JSONObject();
            Date date = new Date();
            result.put("flag",false);
            if(uu.getUid()!=null){ // 修改方法
                uu.setCreatetime(date);
                userService.updataUser(uu);
                result.put("flag",true);
                System.out.println("^^^^^^^^^^^^^^^修改用户");
            }else{                 // 添加方法
                if(StringUtils.isBlank(uu.getFile())){
                    uu.setFile("暂无上传文档");
                }
                uu.setCreatetime(date);
                userService.insertUser(uu);
                System.out.println("^^^^^^^^^^^^^^^添加用户");
                result.put("flag",true);
            }
            return JSON.toJSONString(result);
        }
    
        @RequestMapping("/diyi")
        public String diyi(Model model){
            return "jsps/one";
        }
    
        /* 添加数据的方法 */
        @RequestMapping(value = "/inertOne",produces = "application/json;charset=UTF-8")
        public String insertOne(){
            return "jsps/three";
        }
    
        /* 删除数据 */
        @RequestMapping(value = "/deleteUser",produces = "application/json;charset=UTF-8")
        @ResponseBody
        public String deleteUser(@RequestParam(value = "uids",required = true)List<String> uids, HttpServletRequest request,HttpServletResponse response){
            JSONObject jsonObj=new JSONObject();
            Map<String,Object> map=new HashMap<String,Object>();
            jsonObj.put("flag",false);
            try {
                System.out.println("想要删除的id值"+uids);
                if (uids!=null){
                    map.put("uids",uids);
                    userService.delUser(map);
                    jsonObj.put("flag",true);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
            return JSON.toJSONString(jsonObj);
        }
    
        /* 导出文件 */
        @RequestMapping(value = "/exportUser",produces = "application/json;charset=UTF-8")
        @ResponseBody
        public String exportUser(HttpServletRequest request,HttpServletResponse response){
    
            try {
                /*Map<String,Object> map=new HashMap<String,Object>();*/
                List<User> listUser = userService.myPageAllUser();
                System.out.println("=======导出方法走了======"+listUser);
                if (listUser!=null&&listUser.size()>0){
                    userService.exportUser(request,response,listUser);
                    System.out.println("=======导出文件了======");
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }
    
        /**
         * 获取详情页
         * @param model
         * @param uid
         * @return
         */
        @RequestMapping(value = "/details/{uid}",produces = "application/json;charset=UTF-8")
        public String details(Model model,@PathVariable("uid")Long uid){
            User user = userService.getByID(uid);
            model.addAttribute("user",user);
            model.addAttribute("uid",uid);
            return "jsps/four";
        }
    
        @RequestMapping("/chuan")
        public String diwu(Model model){
            return "jsps/five";
        }
    
        /**
         * 上传文档
         * @param upload
         *
         * @param request
         * @return
         */
        @RequestMapping(value = "/uploadfile")
        @ResponseBody
        public String uploadfile(@RequestParam("upload") MultipartFile upload, HttpServletRequest request) throws Exception{
            System.out.println("上传文档走了========================================"+upload);
            SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSS");
            String res = sdf.format(new Date());
            // uploads文件夹位置
            String rootPath = request.getSession().getServletContext().getRealPath("resource/uploads/");
            // 原始名称
            String originalFileName = upload.getOriginalFilename();
            // 新文件名
            String newFileName = "sliver" + res + originalFileName.substring(originalFileName.lastIndexOf("."));
            // 创建年月文件夹
            Calendar date = Calendar.getInstance();
            File dateDirs = new File(date.get(Calendar.YEAR) + File.separator + (date.get(Calendar.MONTH)+1));
    
            // 新文件
            File newFile = new File(rootPath + File.separator + dateDirs + File.separator + newFileName);
            // 判断目标文件所在目录是否存在
            if( !newFile.getParentFile().exists()) {
                // 如果目标文件所在的目录不存在,则创建父目录
                newFile.getParentFile().mkdirs();
            }
            System.out.println(newFile);
            // 将内存中的数据写入磁盘
            upload.transferTo(newFile);
            // 完整的url
            String fileUrl = date.get(Calendar.YEAR) + "/" + (date.get(Calendar.MONTH)+1) + "/" + newFileName;
            return  fileUrl;
        }
    
        @RequestMapping(value = "/upload22")
        @ResponseBody
        public String upload22(@RequestParam("upload") MultipartFile upload, HttpServletRequest request,HttpServletResponse response) throws Exception{
            System.out.println("上传文档走了========================================"+upload);
            JSONObject result = new JSONObject();
            String prefix;
            String filename;
            String rootPath = null;
            try {
                rootPath = 	request.getSession().getServletContext().getRealPath("/WEB-INF/resource/upload/");/* 得到上传文件保存地址 */
                String filetype = "";
                String fileOldName = upload.getOriginalFilename(); /* 得到上传文件的名字 */
                System.out.println("——————————————————上传文件名:"+fileOldName);
                int index = upload.getOriginalFilename().lastIndexOf(".");
                if (index > -1) {
                    filetype = upload.getOriginalFilename().substring(index + 1);
                }
                prefix = "/data/" + filetype + "/" + DateTimeUtils.getNowTimeString();
                System.out.println("——————————————————上传文件名前的目录:"+prefix);
                filename = UUID.randomUUID().toString() + "." + filetype;
                File copyFile = new File(rootPath + prefix + filename);
                if (!copyFile.getParentFile().exists()) {  /* 判断地址是否存在 */
                    copyFile.getParentFile().mkdirs();  /* 如果不存在,就创建新的 */
                }
                upload.transferTo(copyFile);
                if(filetype.toLowerCase().equals("srt")){  /* 当我们不知道文件编码格式,通过如下方法获取 */
                    String charset = EncodingDetect.getJavaEncode(copyFile.getPath());/* 获得文件编码 */
                    if(StringUtils.isNotBlank(charset)){
                        String content = FileUtils.readFileToString(copyFile, charset);/* 根据文件编码获得文件内容 */
                        FileUtils.writeStringToFile(copyFile, content, "utf-8"); /* 写入一行数据,如果里头有值则会被替换 */
                    }
                }
                System.out.println("最终的文件地址:"+prefix + filename);
                result.put("relPath", prefix + filename);
                result.put("filename", filename);
                result.put("fileOldName", fileOldName);
                result.put("flag", true);
            } catch (Exception e) {
                result.put("flag", false);
                e.printStackTrace();
            }
            response.setContentType("text/html;charset=UTF-8");
            response.getWriter().print(result);
            return null;
        }
    
    
        @RequestMapping(value = "/downloadUser/{uid}",produces = "application/json;charset=UTF-8")
        @ResponseBody
        public String downloadUser(@PathVariable("uid")Long uid,HttpServletRequest request,HttpServletResponse response) {
            String rootpath=request.getSession().getServletContext().getRealPath("/WEB-INF/resource/upload/");
            try {
                User user = userService.getByID(uid);
                userService.download(rootpath+user.getFile(),user.getFileName(),request,response);
            } catch (IOException e) {
                e.printStackTrace();
            }
    
            return null;
        }
    
        /* 实现树状结构 */
        @RequestMapping("/shuu")
        public String shuu(Model model){
    
            return "jsps/sex";
        }
    
    }
    

      操作 String字符串的工具类:

    package com.rdkl.young.utils;
    
    import java.text.ParseException;
    import java.text.SimpleDateFormat;
    import java.util.Date;
    
    public class Tools {
    	/**
    	 * 检测字符串是否不为空(null,"","null")
    	 * @param s
    	 * @return 不为空则返回true,否则返回false
    	 */
    	public static boolean notEmpty(String s){
    		return s!=null && !"".equals(s) && !"null".equals(s);
    	}
    	
    	/**
    	 * 检测字符串是否为空(null,"","null")
    	 * @param s
    	 * @return 为空则返回true,不否则返回false
    	 */
    	public static boolean isEmpty(String s){
    		return s==null || "".equals(s) || "null".equals(s);
    	}
    	
    	/**
    	 * 字符串转换为字符串数组
    	 * @param str 字符串
    	 * @param splitRegex 分隔符
    	 * @return
    	 */
    	public static String[] str2StrArray(String str,String splitRegex){
    		if(isEmpty(str)){
    			return null;
    		}
    		return str.split(splitRegex);
    	}
    	
    	/**
    	 * 用默认的分隔符(,)将字符串转换为字符串数组
    	 * @param str	字符串
    	 * @return
    	 */
    	public static String[] str2StrArray(String str){
    		return str2StrArray(str,",\s*");
    	}
    	
    	/**
    	 * 按照yyyy-MM-dd HH:mm:ss的格式,日期转字符串
    	 * @param date
    	 * @return yyyy-MM-dd HH:mm:ss
    	 */
    	public static String date2Str(Date date){
    		return date2Str(date,"yyyy-MM-dd HH:mm:ss");
    	}
    	
    	/**
    	 * 按照yyyy-MM-dd HH:mm:ss的格式,字符串转日期
    	 * @param date
    	 * @return
    	 */
    	public static Date str2Date(String date){
    		if(notEmpty(date)){
    			SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    			try {
    				return sdf.parse(date);
    			} catch (ParseException e) {
    				// TODO Auto-generated catch block
    				e.printStackTrace();
    			}
    			return new Date();
    		}else{
    			return null;
    		}
    	}
    	
    	/**
    	 * 按照参数format的格式,日期转字符串
    	 * @param date
    	 * @param format
    	 * @return
    	 */
    	public static String date2Str(Date date,String format){
    		if(date!=null){
    			SimpleDateFormat sdf = new SimpleDateFormat(format);
    			return sdf.format(date);
    		}else{
    			return "";
    		}
    	}
    }
    

      操作数据库的 mysql   UserMapper.xml:

    <?xml version="1.0" encoding="UTF-8" ?>
    <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
    
    <mapper namespace="com.rdkl.young.dao.UserMapper">
    
        <select id="myPageAllUser" resultType="User">
            select * from `user`
            order
    		by createtime desc
        </select>
    
        <select id="listPageAllUser" parameterType="Map" resultType="User">
            select * from `user`
        </select>
    
        <select id="getByID" parameterType="user" resultType="User">
            select * from `user` where uid=#{uid}
        </select>
    
        <update id="updataUser" parameterType="User">
            UPDATE user set uname=#{uname},loginname=#{loginname},password=#{password},createtime=#{createtime},emile=#{emile},file=#{file},fileName=#{fileName}
            where uid=#{uid}
        </update>
    
        <insert id="insertUser" parameterType="User">
            INSERT INTO `user` (uid, uname, loginname, password, emile,createtime,file,fileName) values(#{uid},#{uname},#{loginname},#{password},#{emile},#{createtime},#{file},#{fileName})
        </insert>
    
        <delete id="delUser" parameterType="Map">
            DELETE from `user` where uid in
            <foreach collection="uids" item="uid" open="(" separator="," close=")">
                #{uid}
            </foreach>
        </delete>
    
    </mapper>
    

      

    (2)首页;    我使用的是 iframe  

    one.jsp

    <%@ page contentType="text/html;charset=UTF-8" language="java"  %>
    <%@include file="/WEB-INF/views/head/headen.jsp"%>
    
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html>
    <head>
        <title>最开始的页面</title>
        <link rel="stylesheet" type="text/css" href="${ctx}/js/jquery-easyui-1.4.3/themes/gray/easyui.css"/>
        <link rel="stylesheet" type="text/css" href="${ctx}/js/jquery-easyui-1.4.3/themes/icon.css"/>
        <script type="text/javascript" src="${ctx}/js/jquery-1.11.1.min.js"></script>
        <script type="text/javascript" src="${ctx}/js/jquery-easyui-1.4.3/jquery.easyui.min.js"></script>
        <script type="text/javascript" src="${ctx}/js/jquery-easyui-1.4.3/locale/easyui-lang-zh_CN.js"></script>
        <script type="text/javascript" src="${ctx}/js/dateFormat.js"></script>
        <script type="text/javascript" src="${ctx}/js/layer/layer.js"></script>
        <script type="text/javascript" src="${ctx}/js/jquery.form.js"></script>
        <script type="text/javascript" src="${ctx}/js/json2.js"></script>
        <script type="text/javascript" src="${ctx}/js/common.js"></script>
    
    </head>
    <body>
    <div class="con-page">
        <div class="main_base">
            <div class="time-base current" id="current_right">
                <iframe frameborder="0" width="100%" name="rightContent" id="rightContent" heigth="100%"  style="min-height: 775px;overflow:auto"
                        marginwidth="0" scrolling="no" ></iframe>
    
                <!-- 预留给一级子页面跳转到父页面url地址 -->
                <input type="hidden" id="srcUrl">
    
            </div>
        </div>
    </div>
    <script type="text/javascript">
        var srcUrl=parent.$("#srcUrl").val();//父页面url地址
        $(function () {
            $("#rightContent").attr("src","${ctx}"+"/test/shouye");//默认加载右侧选中的数据
        })
    </script>
    </body>
    </html>
    "src","${ctx}"+"/test/shouye"   shouye的后台代码
    package com.rdkl.young.controller;

    import com.alibaba.fastjson.JSON;
    import com.alibaba.fastjson.JSONObject;
    import com.alibaba.fastjson.serializer.SerializerFeature;
    import com.rdkl.young.entity.Page;
    import com.rdkl.young.entity.User;
    import com.rdkl.young.service.UserService;
    import com.rdkl.young.utils.DateTimeUtils;
    import com.rdkl.young.utils.EncodingDetect;
    import com.rdkl.young.utils.HttpUtils;
    import org.apache.commons.io.FileUtils;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Controller;
    import org.springframework.ui.Model;
    import org.springframework.web.bind.annotation.*;
    import org.apache.commons.lang.StringUtils;
    import org.springframework.web.multipart.MultipartFile;

    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import java.io.*;
    import java.net.URL;
    import java.text.SimpleDateFormat;
    import java.util.*;

    @RequestMapping("test")
    @Controller
    public class UserTestController {
    private static final Logger logger= LoggerFactory.getLogger(UserTestController.class);
    @Autowired
    private UserService userService;

    @RequestMapping("/shouye")
    public String shouye(Model model){
    return "jsps/two";
    }

    }

     two.jsp  代码:

    <%@ page contentType="text/html;charset=UTF-8" language="java"  %>
    <%@include file="/WEB-INF/views/head/headen.jsp"%>
    
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html>
    <head>
        <title>首页</title>
        <link rel="stylesheet" type="text/css" href="${ctx}/js/jquery-easyui-1.4.3/themes/gray/easyui.css"/>
        <link rel="stylesheet" type="text/css" href="${ctx}/js/jquery-easyui-1.4.3/themes/icon.css"/>
        <script type="text/javascript" src="${ctx}/js/jquery-1.11.1.min.js"></script>
        <script type="text/javascript" src="${ctx}/js/jquery-easyui-1.4.3/jquery.easyui.min.js"></script>
        <script type="text/javascript" src="${ctx}/js/jquery-easyui-1.4.3/locale/easyui-lang-zh_CN.js"></script>
        <script type="text/javascript" src="${ctx}/js/dateFormat.js"></script>
        <script type="text/javascript" src="${ctx}/js/layer/layer.js"></script>
        <script type="text/javascript" src="${ctx}/js/json2.js"></script>
    
    </head>
    <body>
    <style>
        .box{
             800px;
            padding-left: 300px;
            padding-top: 300px;
            display: block;
        }
        .work{
            border-bottom:1px dotted #000;
            display:inline;
             40px;
        }
        .work a{
            color: white;
            cursor:pointer;
        }
        #deleteuu{
            margin-left: 10px;
        }
        #xiangqing{
            margin-left: 10px;
        }
    </style>
    <script type="text/javascript">
        var totalCount=0;
        $(function(){
            parent.$("#rightContent").css("height",800);//修改iframe高度
            showuser();
        });
        function showuser() {
            $("#zhanshi").datagrid({
                remoteSort:false,// 页面排序
                singleSelect:true,// 为true时 单选一行
                nowrap:false,//设置为true,当数据长度超出列宽时将会自动截取
                striped : true,//设置为true将交替显示行背景。
                fitColumns:true,// 自动填满datagrid指定的宽度
                url :"${ctx}/test/twouser",// 进入后台的 url 地址
                columns :
                    [ [
                        {
                            field : 'uid',
                            title : 'ID',
                            align : 'center',
                            hidden:true
                        }, {
                            field : 'uname',
                            title : '姓名',
                            width : 250
                        },{
                            field : 'loginname',
                            title : '登录名',
                            align : 'center',
                            width : 100
                        },{
                            field : 'createtime',
                            title : '创建时间',
                            align : 'center',
                            width : 137,
                            formatter:function(value,row,index)
                            {
                                if(value==null||value==''){
                                    return "--";
                                }else{
                                    return  formatDate(row.createtime);
                                }
                            }
                        },{
                            field : 'setOperation',
                            title : '操作',
                            align : 'center',
                            width : 146,
                            formatter:function(value,row,index)
                            {
                                var str = "<span class='subOperation'>" +
                                    "<a  href='javascript:updataUser("+row.uid+");' name='updata' id='updata'>修改</a>" +
                                    "<a  href='javascript:getDeleteUser("+row.uid+");' name='deleteuu' id='deleteuu'>删除</a>" +
                                    "<a  href='javascript:xiangqingUser("+row.uid+");' name='xiangqing' id='xiangqing'>详情</a>" +
                                    "</span>";
                                return str;
                            }
                        }
                    ] ],
                loadMsg : '数据装载中......',
                singleSelect : false,//为true时只能选择单行
                fitColumns : false,// 为true 时允许表格自动缩放,以适应父容器
                idField : 'uid',// 当数据表格初始化时 以那一列来排序
                remoteSort : false,
                frozenColumns : [ [ {
                    field : 'ck',
                    checkbox : true
                } ] ],
                pagination : true,  //分页
                rownumbers : false,// 行数
                pageSize : 15,//每页显示的记录条数,默认为15 
                pageList : [ 10, 15, 20, 30 ],
                onLoadSuccess : function(row) {
                    totalCount = row.total;
                    $(this).datagrid('clearSelections'); //清空选中的行
                }
            });
            var userGridPager = $("#zhanshi").datagrid('getPager');
            $(userGridPager).pagination({
                beforePageText : '第',
                afterPageText : '页    共 {pages} 页',
                displayMsg : '当前显示 {from} - {to} 条  共 {total} 条记录'
            });
    
        }
        /* 修改用户 */
        function updataUser(uid) {
            //预留给子页面返回当前页面使用
            parent.$("#srcUrl").val(parent.$("#rightContent").attr("src"));
            //跳转子页面-添加左侧栏目
            parent.$("#rightContent").attr("src","${ctx}/test/sanye/"+uid);
        }
        /* 添加用户 */
        function insertUser() {
            //预留给子页面返回当前页面使用
            parent.$("#srcUrl").val(parent.$("#rightContent").attr("src"));
            //跳转子页面-添加左侧栏目
            parent.$("#rightContent").attr("src","${ctx}/test/inertOne");
        }
        /* 删除用户 */
        function deleteUser() {
            var rows=$("#zhanshi").datagrid('getSelections');
            var uids = [];
            if(rows.length==0){
                parent.layer.alert("请选择需要删除的记录!",{icon: 0, title:'提示'});
                return;
            }else{
                for(var i=0; i<rows.length; i++){
                    uids.push(rows[i].uid);
                }
                getDeleteUser(uids);
            }
        }
        function getDeleteUser(uids) {
                parent.layer.confirm("确定要删除吗?",{btn: ["确定","取消"],icon: 3, title:"提示"}, function(r) {
                    if (r) {
                        parent.layer.close(r);
                        $.ajax({
                            url:"${ctx}/test/deleteUser?uids="+uids,
                            dataType:"json",
                            type:"post",
                           /* data:{
                                "uids":rows.uid
                            },*/
                            success:function (data) {
                                if(data.flag==true){
                                    parent.layer.alert("删除成功!",{icon: 1, title:'提示'});
                                    /* window.location.href="/test/diyi"; */
                                }else{
                                    parent.layer.alert("删除失败!",{icon: 2, title:'提示'});
                                }
                                $("#zhanshi").datagrid('reload');
                            }
                        });
                    }
                })
    
        }
        
        /* 导出数据 */
        function daoUser() {
            if(totalCount<0){
                parent.layer.alert("暂无数据,无法导出!",{icon: 0, title:'提示'});
            }
            window.location.href="${ctx}/test/exportUser";
        }
        /* 上传文件页面 */
        function chuanUser() {
            //预留给子页面返回当前页面使用
            parent.$("#srcUrl").val(parent.$("#rightContent").attr("src"));
            //跳转子页面-添加左侧栏目
            parent.$("#rightContent").attr("src","${ctx}/test/chuan");
        }
    
        function xiangqingUser(uid) {
            if(uid==0){
                parent.layer.alert("该用户已被删除!",{icon: 0, title:'提示'});
            }
            if(uid!=null&&uid!=0){
                //预留给子页面返回当前页面使用
                parent.$("#srcUrl").val(parent.$("#rightContent").attr("src"));
                //跳转子页面-添加左侧栏目
                parent.$("#rightContent").attr("src","${ctx}/test/details/"+uid);
            }
        }
        function shu() {
            //预留给子页面返回当前页面使用
            parent.$("#srcUrl").val(parent.$("#rightContent").attr("src"));
            //跳转子页面-添加左侧栏目
            parent.$("#rightContent").attr("src","${ctx}/test/shuu");
        }
    </script>
    <div class="box" id="my_box">
        <div class="work" style="margin-left: 596px;background-color: #2e8ded;"  align="center">
            <a id="insert" name="insert" onclick="insertUser();" >添加</a>
        </div>
        <div class="work" style="margin-left: 10px;background-color: #c9302c;"  align="center">
            <a id="delete" name="delete" onclick="deleteUser();" >删除</a>
        </div>
        <div class="work" style="margin-left: 10px;background-color: #ffab2e;"  align="center">
            <a id="dao" name="dao" onclick="daoUser();" >导出</a>
        </div>
        <div class="work" style="margin-left: 10px;background-color: #ffab2e;"  align="center">
            <a id="chuan" name="chuan" onclick="chuanUser();" >上传文件</a>
        </div>
        <div class="work" style="margin-left: 10px;background-color: #ffab2e;"  align="center">
            <a id="shuzhuang" name="shuzhuang" onclick="shu();">树状结构</a>
        </div>
        <div class="main_1" id="zhanshi">
    
        </div>
    
    </div>
    
    </body>
    </html>
    url :"${ctx}/test/twouser",// 进入后台的 url 地址  后台代码package com.rdkl.young.controller;

    import com.alibaba.fastjson.JSON;
    import com.alibaba.fastjson.JSONObject;
    import com.alibaba.fastjson.serializer.SerializerFeature;
    import com.rdkl.young.entity.Page;
    import com.rdkl.young.entity.User;
    import com.rdkl.young.service.UserService;
    import com.rdkl.young.utils.DateTimeUtils;
    import com.rdkl.young.utils.EncodingDetect;
    import com.rdkl.young.utils.HttpUtils;
    import org.apache.commons.io.FileUtils;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Controller;
    import org.springframework.ui.Model;
    import org.springframework.web.bind.annotation.*;
    import org.apache.commons.lang.StringUtils;
    import org.springframework.web.multipart.MultipartFile;

    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import java.io.*;
    import java.net.URL;
    import java.text.SimpleDateFormat;
    import java.util.*;

    @RequestMapping("test")
    @Controller
    public class UserTestController {
    private static final Logger logger= LoggerFactory.getLogger(UserTestController.class);
    @Autowired
    private UserService userService;

    @RequestMapping("/shouye")
    public String shouye(Model model){
    return "jsps/two";
    }

    @RequestMapping(value="/twouser", produces = "application/json;charset=UTF-8")
    @ResponseBody
    public String twouser(HttpServletRequest request, HttpServletResponse response,Page page){
    JSONObject jsonObject= new JSONObject();
    String pageSize = request.getParameter("rows");
    if (StringUtils.isBlank(pageSize)){
    pageSize="15";
    }
    String pageNo = request.getParameter("page");
    if (StringUtils.isBlank(pageNo)){
    pageNo="1";
    }
    page.setPageSize(Integer.parseInt(pageSize));
    page.setPageNo(Integer.parseInt(pageNo));
    Map<String,Object> map=new HashMap<String, Object>();
    map.put("page",page);
    List<User> listUser = userService.listPageAllUser(map);
    if(listUser.size()>0){
    jsonObject.put("rows",listUser);
    jsonObject.put("total",page.getTotalCount());
    }
    return jsonObject.toJSONString(jsonObject, SerializerFeature.WriteDateUseDateFormat);
    }


    }
    获取用户集合的 sql   List<User> listUser = userService.listPageAllUser(map);
    <select id="listPageAllUser" parameterType="Map" resultType="User">
            select * from `user`
        </select>
    

    (3) 添加用户:

    <%@ page contentType="text/html;charset=UTF-8" language="java"  %>
    <%@include file="/WEB-INF/views/head/headen.jsp"%>
    
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html>
    <head>
        <title>首页</title>
        <link rel="stylesheet" type="text/css" href="${ctx}/js/jquery-easyui-1.4.3/themes/gray/easyui.css"/>
        <link rel="stylesheet" type="text/css" href="${ctx}/js/jquery-easyui-1.4.3/themes/icon.css"/>
        <script type="text/javascript" src="${ctx}/js/jquery-1.11.1.min.js"></script>
        <script type="text/javascript" src="${ctx}/js/jquery-easyui-1.4.3/jquery.easyui.min.js"></script>
        <script type="text/javascript" src="${ctx}/js/jquery-easyui-1.4.3/locale/easyui-lang-zh_CN.js"></script>
        <script type="text/javascript" src="${ctx}/js/dateFormat.js"></script>
        <script type="text/javascript" src="${ctx}/js/layer/layer.js"></script>
        <script type="text/javascript" src="${ctx}/js/json2.js"></script>
    
    </head>
    <body>
    <style>
        .box{
             800px;
            padding-left: 300px;
            padding-top: 300px;
            display: block;
        }
        .work{
            border-bottom:1px dotted #000;
            display:inline;
             40px;
        }
        .work a{
            color: white;
            cursor:pointer;
        }
        #deleteuu{
            margin-left: 10px;
        }
        #xiangqing{
            margin-left: 10px;
        }
    </style>
    <script type="text/javascript">
        var totalCount=0;
        $(function(){
            parent.$("#rightContent").css("height",800);//修改iframe高度
            showuser();
        });
        function showuser() {
            $("#zhanshi").datagrid({
                remoteSort:false,// 页面排序
                singleSelect:true,// 为true时 单选一行
                nowrap:false,//设置为true,当数据长度超出列宽时将会自动截取
                striped : true,//设置为true将交替显示行背景。
                fitColumns:true,// 自动填满datagrid指定的宽度
                url :"${ctx}/test/twouser",// 进入后台的 url 地址
                columns :
                    [ [
                        {
                            field : 'uid',
                            title : 'ID',
                            align : 'center',
                            hidden:true
                        }, {
                            field : 'uname',
                            title : '姓名',
                            width : 250
                        },{
                            field : 'loginname',
                            title : '登录名',
                            align : 'center',
                            width : 100
                        },{
                            field : 'createtime',
                            title : '创建时间',
                            align : 'center',
                            width : 137,
                            formatter:function(value,row,index)
                            {
                                if(value==null||value==''){
                                    return "--";
                                }else{
                                    return  formatDate(row.createtime);
                                }
                            }
                        },{
                            field : 'setOperation',
                            title : '操作',
                            align : 'center',
                            width : 146,
                            formatter:function(value,row,index)
                            {
                                var str = "<span class='subOperation'>" +
                                    "<a  href='javascript:updataUser("+row.uid+");' name='updata' id='updata'>修改</a>" +
                                    "<a  href='javascript:getDeleteUser("+row.uid+");' name='deleteuu' id='deleteuu'>删除</a>" +
                                    "<a  href='javascript:xiangqingUser("+row.uid+");' name='xiangqing' id='xiangqing'>详情</a>" +
                                    "</span>";
                                return str;
                            }
                        }
                    ] ],
                loadMsg : '数据装载中......',
                singleSelect : false,//为true时只能选择单行
                fitColumns : false,// 为true 时允许表格自动缩放,以适应父容器
                idField : 'uid',// 当数据表格初始化时 以那一列来排序
                remoteSort : false,
                frozenColumns : [ [ {
                    field : 'ck',
                    checkbox : true
                } ] ],
                pagination : true,  //分页
                rownumbers : false,// 行数
                pageSize : 15,//每页显示的记录条数,默认为15 
                pageList : [ 10, 15, 20, 30 ],
                onLoadSuccess : function(row) {
                    totalCount = row.total;
                    $(this).datagrid('clearSelections'); //清空选中的行
                }
            });
            var userGridPager = $("#zhanshi").datagrid('getPager');
            $(userGridPager).pagination({
                beforePageText : '第',
                afterPageText : '页    共 {pages} 页',
                displayMsg : '当前显示 {from} - {to} 条  共 {total} 条记录'
            });
    
        }
        /* 添加用户 */
        function insertUser() {
            //预留给子页面返回当前页面使用
            parent.$("#srcUrl").val(parent.$("#rightContent").attr("src"));
            //跳转子页面-添加左侧栏目
            parent.$("#rightContent").attr("src","${ctx}/test/inertOne");
        }
      
       
    </script>
    <div class="box" id="my_box">
        <div class="work" style="margin-left: 596px;background-color: #2e8ded;"  align="center">
            <a id="insert" name="insert" onclick="insertUser();" >添加</a>
        </div>
        <div class="work" style="margin-left: 10px;background-color: #c9302c;"  align="center">
            <a id="delete" name="delete" onclick="deleteUser();" >删除</a>
        </div>
        <div class="work" style="margin-left: 10px;background-color: #ffab2e;"  align="center">
            <a id="dao" name="dao" onclick="daoUser();" >导出</a>
        </div>
        <div class="work" style="margin-left: 10px;background-color: #ffab2e;"  align="center">
            <a id="chuan" name="chuan" onclick="chuanUser();" >上传文件</a>
        </div>
        <div class="work" style="margin-left: 10px;background-color: #ffab2e;"  align="center">
            <a id="shuzhuang" name="shuzhuang" onclick="shu();">树状结构</a>
        </div>
        <div class="main_1" id="zhanshi">
    
        </div>
    
    </div>
    
    </body>
    </html>
    

      添加用户的后台代码:

    /* 添加数据的方法 */
        @RequestMapping(value = "/inertOne",produces = "application/json;charset=UTF-8")
        public String insertOne(){
            return "jsps/three";
        }
    

      three.jsp 页面        修改  和 添加页面是同一个页面。

    在这里把修改的 代码也粘上

     /* 修改用户 */
        function updataUser(uid) {
            //预留给子页面返回当前页面使用
            parent.$("#srcUrl").val(parent.$("#rightContent").attr("src"));
            //跳转子页面-添加左侧栏目
            parent.$("#rightContent").attr("src","${ctx}/test/sanye/"+uid);
        }
    

      sanye  这个后台方法

     @RequestMapping(value = "/sanye/{uid}",produces = "application/json;charset=UTF-8")
        public String sanye(Model model, @PathVariable("uid")Long uid){
            User u=userService.getByID(uid);
            model.addAttribute("user",u);
            model.addAttribute("uid",uid);
            return "jsps/three";
        }
    

      

    three.jsp  修改  和 添加 页面(一般开发中都会把添加和修改页面做成同一个)
    <%@ page contentType="text/html;charset=UTF-8" language="java"  %>
    <%@include file="/WEB-INF/views/head/headen.jsp"%>
    <!DOCTYPE html>
    <html>
    <head>
        <title>修改页面</title>
        <link rel="stylesheet" type="text/css" href="${ctx}/js/jquery-easyui-1.4.3/themes/gray/easyui.css"/>
        <link rel="stylesheet" type="text/css" href="${ctx}/js/jquery-easyui-1.4.3/themes/icon.css"/>
        <script type="text/javascript" src="${ctx}/js/jquery-1.11.1.min.js"></script>
        <script type="text/javascript" src="${ctx}/js/jquery-easyui-1.4.3/jquery.easyui.min.js"></script>
        <script type="text/javascript" src="${ctx}/js/jquery-easyui-1.4.3/locale/easyui-lang-zh_CN.js"></script>
    
        <script src="${ctx}/js/common.js"></script>
        <script type="text/javascript" src="${ctx}/js/layer/layer.js"></script>
        <script type="text/javascript" src="${ctx}/js/jquery.form.js"></script>
        <script type="text/javascript" src="${ctx}/js/validate.js"></script>
        <script type="text/javascript" src="${ctx}/js/json2.js"></script>
        <script src="${ctx}/js/dateFormat.js"></script>
    </head>
    <body>
    <style>
        .main_2{
            position: absolute;
             400px;
            margin-left: 300px;
            margin-top: 300px;
            height: 400px;
            z-index:1001;
            -moz-opacity: 0.8;
            opacity:.80;
            filter: alpha(opacity=80);
            border: dashed;
        }
        .main_1{
            padding-left: 250px;
        }
        #file{
            display: none;
        }
    </style>
    
    <div>
        <div class="main_1">
            <a href="javascript:void(0);" onclick="f_rollback();">
                <button class="set_class" style="cursor:pointer;">返回上一级</button>
            </a>
        </div>
        <div class="main_2" id="update_User">
    
            <form method="post" id="userForm" style="background:#fff;">
                <div id="index_1">
                    <input type="hidden"  id="uid" name="uid" value="${user.uid}"/>
                </div>
                <div id="index_2">
                    <label>学生姓名*:</label>
                    <div>
                        <input type="text" id="uname" name="uname" value="${user.uname}"/>
                        <%--<textarea id="uname" style=" 99%;">${user.uname}</textarea>--%>
                    </div>
                </div>
                <div id="index_3">
                    <label>登录名*:</label>
                    <div>
                        <input type="text" id="loginname" name="loginname" value="${user.loginname}"/>
                         <%--<textarea id="loginname" style=" 99%;">${user.loginname}</textarea>--%>
                    </div>
                </div>
                <div id="index_4">
                    <label>邮箱*:</label>
                    <div>
                        <input type="text" id="emile" name="emile" value="${user.emile}"/>
                        <%--<textarea id="loginname" style=" 99%;">${user.loginname}</textarea>--%>
                    </div>
                </div>
                <div id="index_5">
                    <label>创建时间:</label>
                    <div >
                        <input type="text" id="createtime" name="createtime" value=" <fmt:formatDate value="${user.createtime}" pattern="yyyy-MM-dd HH:mm:ss" ></fmt:formatDate>"/>
                    </div>
    
                </div>
            </form>
    
            <div>
                <input type="button" class="user-button" value="保存" onclick="xiugai();"/>
            </div>
        </div>
    </div>
    <%-- js代码块儿 --%>
    <script type="text/javascript">
        var srcUrl=parent.$("#srcUrl").val();//父页面url地址,为了返回上一级使用
        $(function () {
            var uid=$("#uid").val();
            if (uid!=null&&uid!=0){
                $("#index_4").hide();
            }else{
                $("#index_5").hide();
            }
        });
        function xiugai() {
            parent.$("#rightContent").css("height",1000);//修改iframe高度
            $("#userForm").form("submit", {
                type:"post",
                dataType:"json",
                url:"${ctx}/test/updata",
               /* data:datas,*/
                success:function (da) {
                    var data = eval('('+da+')'); // 把json数据转化为json对象
                    if(data.flag == true){
                        parent.layer.alert("添加成功!",{icon: 1, title:'提示'});
                        parent.$("#rightContent").attr("src",srcUrl);//返回上一级
                        parent.layer.closeAll();
                    }else {
                        parent.layer.alert("添加失败!",{icon: 2, title:'提示'});
                    }
                }
            })
        }
    
    
        function f_rollback() {
            parent.$("#rightContent").attr("src",srcUrl);
        }
    </script>
    
    </body>
    </html>
    updata 后台代码:
    @RequestMapping(value = "/updata", produces = "application/json;charset=UTF-8")
        @ResponseBody
        public String detupdata(User uu){
            JSONObject result = new JSONObject();
            Date date = new Date();
            result.put("flag",false);
            if(uu.getUid()!=null){ // 修改方法
                uu.setCreatetime(date);
                userService.updataUser(uu);
                result.put("flag",true);
                System.out.println("^^^^^^^^^^^^^^^修改用户");
            }else{                 // 添加方法
                if(StringUtils.isBlank(uu.getFile())){
                    uu.setFile("暂无上传文档");
                }
                uu.setCreatetime(date);
                userService.insertUser(uu);
                System.out.println("^^^^^^^^^^^^^^^添加用户");
                result.put("flag",true);
            }
            return JSON.toJSONString(result);
        }
    

      添加 和 修改的  sql 代码

        <update id="updataUser" parameterType="User">
            UPDATE user set uname=#{uname},loginname=#{loginname},password=#{password},createtime=#{createtime},emile=#{emile},file=#{file},fileName=#{fileName}
            where uid=#{uid}
        </update>
    
        <insert id="insertUser" parameterType="User">
            INSERT INTO `user` (uid, uname, loginname, password, emile,createtime,file,fileName) values(#{uid},#{uname},#{loginname},#{password},#{emile},#{createtime},#{file},#{fileName})
        </insert>
    

    (4) 删除功能  (批量删除 和  单个 删除使用同一个sql)

    <%@ page contentType="text/html;charset=UTF-8" language="java"  %>
    <%@include file="/WEB-INF/views/head/headen.jsp"%>
    
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html>
    <head>
        <title>首页</title>
        <link rel="stylesheet" type="text/css" href="${ctx}/js/jquery-easyui-1.4.3/themes/gray/easyui.css"/>
        <link rel="stylesheet" type="text/css" href="${ctx}/js/jquery-easyui-1.4.3/themes/icon.css"/>
        <script type="text/javascript" src="${ctx}/js/jquery-1.11.1.min.js"></script>
        <script type="text/javascript" src="${ctx}/js/jquery-easyui-1.4.3/jquery.easyui.min.js"></script>
        <script type="text/javascript" src="${ctx}/js/jquery-easyui-1.4.3/locale/easyui-lang-zh_CN.js"></script>
        <script type="text/javascript" src="${ctx}/js/dateFormat.js"></script>
        <script type="text/javascript" src="${ctx}/js/layer/layer.js"></script>
        <script type="text/javascript" src="${ctx}/js/json2.js"></script>
    
    </head>
    <body>
    <style>
        .box{
             800px;
            padding-left: 300px;
            padding-top: 300px;
            display: block;
        }
        .work{
            border-bottom:1px dotted #000;
            display:inline;
             40px;
        }
        .work a{
            color: white;
            cursor:pointer;
        }
        #deleteuu{
            margin-left: 10px;
        }
        #xiangqing{
            margin-left: 10px;
        }
    </style>
    <script type="text/javascript">
        var totalCount=0;
        $(function(){
            parent.$("#rightContent").css("height",800);//修改iframe高度
            showuser();
        });
        function showuser() {
            $("#zhanshi").datagrid({
                remoteSort:false,// 页面排序
                singleSelect:true,// 为true时 单选一行
                nowrap:false,//设置为true,当数据长度超出列宽时将会自动截取
                striped : true,//设置为true将交替显示行背景。
                fitColumns:true,// 自动填满datagrid指定的宽度
                url :"${ctx}/test/twouser",// 进入后台的 url 地址
                columns :
                    [ [
                        {
                            field : 'uid',
                            title : 'ID',
                            align : 'center',
                            hidden:true
                        }, {
                            field : 'uname',
                            title : '姓名',
                            width : 250
                        },{
                            field : 'loginname',
                            title : '登录名',
                            align : 'center',
                            width : 100
                        },{
                            field : 'createtime',
                            title : '创建时间',
                            align : 'center',
                            width : 137,
                            formatter:function(value,row,index)
                            {
                                if(value==null||value==''){
                                    return "--";
                                }else{
                                    return  formatDate(row.createtime);
                                }
                            }
                        },{
                            field : 'setOperation',
                            title : '操作',
                            align : 'center',
                            width : 146,
                            formatter:function(value,row,index)
                            {
                                var str = "<span class='subOperation'>" +
                                    "<a  href='javascript:updataUser("+row.uid+");' name='updata' id='updata'>修改</a>" +
                                    "<a  href='javascript:getDeleteUser("+row.uid+");' name='deleteuu' id='deleteuu'>删除</a>" +
                                    "<a  href='javascript:xiangqingUser("+row.uid+");' name='xiangqing' id='xiangqing'>详情</a>" +
                                    "</span>";
                                return str;
                            }
                        }
                    ] ],
                loadMsg : '数据装载中......',
                singleSelect : false,//为true时只能选择单行
                fitColumns : false,// 为true 时允许表格自动缩放,以适应父容器
                idField : 'uid',// 当数据表格初始化时 以那一列来排序
                remoteSort : false,
                frozenColumns : [ [ {
                    field : 'ck',
                    checkbox : true
                } ] ],
                pagination : true,  //分页
                rownumbers : false,// 行数
                pageSize : 15,//每页显示的记录条数,默认为15 
                pageList : [ 10, 15, 20, 30 ],
                onLoadSuccess : function(row) {
                    totalCount = row.total;
                    $(this).datagrid('clearSelections'); //清空选中的行
                }
            });
            var userGridPager = $("#zhanshi").datagrid('getPager');
            $(userGridPager).pagination({
                beforePageText : '第',
                afterPageText : '页    共 {pages} 页',
                displayMsg : '当前显示 {from} - {to} 条  共 {total} 条记录'
            });
    
        }
        /* 修改用户 */
        function updataUser(uid) {
            //预留给子页面返回当前页面使用
            parent.$("#srcUrl").val(parent.$("#rightContent").attr("src"));
            //跳转子页面-添加左侧栏目
            parent.$("#rightContent").attr("src","${ctx}/test/sanye/"+uid);
        }
        /* 添加用户 */
        function insertUser() {
            //预留给子页面返回当前页面使用
            parent.$("#srcUrl").val(parent.$("#rightContent").attr("src"));
            //跳转子页面-添加左侧栏目
            parent.$("#rightContent").attr("src","${ctx}/test/inertOne");
        }
        /* 删除用户 */
        function deleteUser() {
            var rows=$("#zhanshi").datagrid('getSelections');
            var uids = [];
            if(rows.length==0){
                parent.layer.alert("请选择需要删除的记录!",{icon: 0, title:'提示'});
                return;
            }else{
                for(var i=0; i<rows.length; i++){
                    uids.push(rows[i].uid);
                }
                getDeleteUser(uids);
            }
        }
        function getDeleteUser(uids) {
                parent.layer.confirm("确定要删除吗?",{btn: ["确定","取消"],icon: 3, title:"提示"}, function(r) {
                    if (r) {
                        parent.layer.close(r);
                        $.ajax({
                            url:"${ctx}/test/deleteUser?uids="+uids,
                            dataType:"json",
                            type:"post",
                           /* data:{
                                "uids":rows.uid
                            },*/
                            success:function (data) {
                                if(data.flag==true){
                                    parent.layer.alert("删除成功!",{icon: 1, title:'提示'});
                                    /* window.location.href="/test/diyi"; */
                                }else{
                                    parent.layer.alert("删除失败!",{icon: 2, title:'提示'});
                                }
                                $("#zhanshi").datagrid('reload');
                            }
                        });
                    }
                })
    
        }
        
      
    </script>
    <div class="box" id="my_box">
        <div class="work" style="margin-left: 596px;background-color: #2e8ded;"  align="center">
            <a id="insert" name="insert" onclick="insertUser();" >添加</a>
        </div>
        <div class="work" style="margin-left: 10px;background-color: #c9302c;"  align="center">
            <a id="delete" name="delete" onclick="deleteUser();" >删除</a>
        </div>
        <div class="work" style="margin-left: 10px;background-color: #ffab2e;"  align="center">
            <a id="dao" name="dao" onclick="daoUser();" >导出</a>
        </div>
        <div class="work" style="margin-left: 10px;background-color: #ffab2e;"  align="center">
            <a id="chuan" name="chuan" onclick="chuanUser();" >上传文件</a>
        </div>
        <div class="work" style="margin-left: 10px;background-color: #ffab2e;"  align="center">
            <a id="shuzhuang" name="shuzhuang" onclick="shu();">树状结构</a>
        </div>
        <div class="main_1" id="zhanshi">
    
        </div>
    
    </div>
    
    </body>
    </html>
    deleteUser  后台代码:
     /* 删除数据 */
        @RequestMapping(value = "/deleteUser",produces = "application/json;charset=UTF-8")
        @ResponseBody
        public String deleteUser(@RequestParam(value = "uids",required = true)List<String> uids, HttpServletRequest request,HttpServletResponse response){
            JSONObject jsonObj=new JSONObject();
            Map<String,Object> map=new HashMap<String,Object>();
            jsonObj.put("flag",false);
            try {
                System.out.println("想要删除的id值"+uids);
                if (uids!=null){
                    map.put("uids",uids);
                    userService.delUser(map);
                    jsonObj.put("flag",true);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
            return JSON.toJSONString(jsonObj);
        }
    

      删除 sql:

    <delete id="delUser" parameterType="Map">
            DELETE from `user` where uid in
            <foreach collection="uids" item="uid" open="(" separator="," close=")">
                #{uid}
            </foreach>
        </delete>
    

    (5) 导出功能

    <%@ page contentType="text/html;charset=UTF-8" language="java"  %>
    <%@include file="/WEB-INF/views/head/headen.jsp"%>
    
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html>
    <head>
        <title>首页</title>
        <link rel="stylesheet" type="text/css" href="${ctx}/js/jquery-easyui-1.4.3/themes/gray/easyui.css"/>
        <link rel="stylesheet" type="text/css" href="${ctx}/js/jquery-easyui-1.4.3/themes/icon.css"/>
        <script type="text/javascript" src="${ctx}/js/jquery-1.11.1.min.js"></script>
        <script type="text/javascript" src="${ctx}/js/jquery-easyui-1.4.3/jquery.easyui.min.js"></script>
        <script type="text/javascript" src="${ctx}/js/jquery-easyui-1.4.3/locale/easyui-lang-zh_CN.js"></script>
        <script type="text/javascript" src="${ctx}/js/dateFormat.js"></script>
        <script type="text/javascript" src="${ctx}/js/layer/layer.js"></script>
        <script type="text/javascript" src="${ctx}/js/json2.js"></script>
    
    </head>
    <body>
    <style>
        .box{
             800px;
            padding-left: 300px;
            padding-top: 300px;
            display: block;
        }
        .work{
            border-bottom:1px dotted #000;
            display:inline;
             40px;
        }
        .work a{
            color: white;
            cursor:pointer;
        }
        #deleteuu{
            margin-left: 10px;
        }
        #xiangqing{
            margin-left: 10px;
        }
    </style>
    <script type="text/javascript">
        var totalCount=0;
        $(function(){
            parent.$("#rightContent").css("height",800);//修改iframe高度
            showuser();
        });
        function showuser() {
            $("#zhanshi").datagrid({
                remoteSort:false,// 页面排序
                singleSelect:true,// 为true时 单选一行
                nowrap:false,//设置为true,当数据长度超出列宽时将会自动截取
                striped : true,//设置为true将交替显示行背景。
                fitColumns:true,// 自动填满datagrid指定的宽度
                url :"${ctx}/test/twouser",// 进入后台的 url 地址
                columns :
                    [ [
                        {
                            field : 'uid',
                            title : 'ID',
                            align : 'center',
                            hidden:true
                        }, {
                            field : 'uname',
                            title : '姓名',
                            width : 250
                        },{
                            field : 'loginname',
                            title : '登录名',
                            align : 'center',
                            width : 100
                        },{
                            field : 'createtime',
                            title : '创建时间',
                            align : 'center',
                            width : 137,
                            formatter:function(value,row,index)
                            {
                                if(value==null||value==''){
                                    return "--";
                                }else{
                                    return  formatDate(row.createtime);
                                }
                            }
                        },{
                            field : 'setOperation',
                            title : '操作',
                            align : 'center',
                            width : 146,
                            formatter:function(value,row,index)
                            {
                                var str = "<span class='subOperation'>" +
                                    "<a  href='javascript:updataUser("+row.uid+");' name='updata' id='updata'>修改</a>" +
                                    "<a  href='javascript:getDeleteUser("+row.uid+");' name='deleteuu' id='deleteuu'>删除</a>" +
                                    "<a  href='javascript:xiangqingUser("+row.uid+");' name='xiangqing' id='xiangqing'>详情</a>" +
                                    "</span>";
                                return str;
                            }
                        }
                    ] ],
                loadMsg : '数据装载中......',
                singleSelect : false,//为true时只能选择单行
                fitColumns : false,// 为true 时允许表格自动缩放,以适应父容器
                idField : 'uid',// 当数据表格初始化时 以那一列来排序
                remoteSort : false,
                frozenColumns : [ [ {
                    field : 'ck',
                    checkbox : true
                } ] ],
                pagination : true,  //分页
                rownumbers : false,// 行数
                pageSize : 15,//每页显示的记录条数,默认为15 
                pageList : [ 10, 15, 20, 30 ],
                onLoadSuccess : function(row) {
                    totalCount = row.total;
                    $(this).datagrid('clearSelections'); //清空选中的行
                }
            });
            var userGridPager = $("#zhanshi").datagrid('getPager');
            $(userGridPager).pagination({
                beforePageText : '第',
                afterPageText : '页    共 {pages} 页',
                displayMsg : '当前显示 {from} - {to} 条  共 {total} 条记录'
            });
    
        }
        /* 修改用户 */
        function updataUser(uid) {
            //预留给子页面返回当前页面使用
            parent.$("#srcUrl").val(parent.$("#rightContent").attr("src"));
            //跳转子页面-添加左侧栏目
            parent.$("#rightContent").attr("src","${ctx}/test/sanye/"+uid);
        }
        /* 添加用户 */
        function insertUser() {
            //预留给子页面返回当前页面使用
            parent.$("#srcUrl").val(parent.$("#rightContent").attr("src"));
            //跳转子页面-添加左侧栏目
            parent.$("#rightContent").attr("src","${ctx}/test/inertOne");
        }
        /* 删除用户 */
        function deleteUser() {
            var rows=$("#zhanshi").datagrid('getSelections');
            var uids = [];
            if(rows.length==0){
                parent.layer.alert("请选择需要删除的记录!",{icon: 0, title:'提示'});
                return;
            }else{
                for(var i=0; i<rows.length; i++){
                    uids.push(rows[i].uid);
                }
                getDeleteUser(uids);
            }
        }
        function getDeleteUser(uids) {
                parent.layer.confirm("确定要删除吗?",{btn: ["确定","取消"],icon: 3, title:"提示"}, function(r) {
                    if (r) {
                        parent.layer.close(r);
                        $.ajax({
                            url:"${ctx}/test/deleteUser?uids="+uids,
                            dataType:"json",
                            type:"post",
                           /* data:{
                                "uids":rows.uid
                            },*/
                            success:function (data) {
                                if(data.flag==true){
                                    parent.layer.alert("删除成功!",{icon: 1, title:'提示'});
                                    /* window.location.href="/test/diyi"; */
                                }else{
                                    parent.layer.alert("删除失败!",{icon: 2, title:'提示'});
                                }
                                $("#zhanshi").datagrid('reload');
                            }
                        });
                    }
                })
    
        }
        
        /* 导出数据 */
        function daoUser() {
            if(totalCount<0){
                parent.layer.alert("暂无数据,无法导出!",{icon: 0, title:'提示'});
            }
            window.location.href="${ctx}/test/exportUser";
        }
      
    </script>
    <div class="box" id="my_box">
        <div class="work" style="margin-left: 596px;background-color: #2e8ded;"  align="center">
            <a id="insert" name="insert" onclick="insertUser();" >添加</a>
        </div>
        <div class="work" style="margin-left: 10px;background-color: #c9302c;"  align="center">
            <a id="delete" name="delete" onclick="deleteUser();" >删除</a>
        </div>
        <div class="work" style="margin-left: 10px;background-color: #ffab2e;"  align="center">
            <a id="dao" name="dao" onclick="daoUser();" >导出</a>
        </div>
        <div class="work" style="margin-left: 10px;background-color: #ffab2e;"  align="center">
            <a id="chuan" name="chuan" onclick="chuanUser();" >上传文件</a>
        </div>
        <div class="work" style="margin-left: 10px;background-color: #ffab2e;"  align="center">
            <a id="shuzhuang" name="shuzhuang" onclick="shu();">树状结构</a>
        </div>
        <div class="main_1" id="zhanshi">
    
        </div>
    
    </div>
    
    </body>
    </html>
    

      导出数据的 controller

    /* 导出文件 */
        @RequestMapping(value = "/exportUser",produces = "application/json;charset=UTF-8")
        @ResponseBody
        public String exportUser(HttpServletRequest request,HttpServletResponse response){
    
            try {
                /*Map<String,Object> map=new HashMap<String,Object>();*/
                List<User> listUser = userService.myPageAllUser();
                System.out.println("=======导出方法走了======"+listUser);
                if (listUser!=null&&listUser.size()>0){
                    userService.exportUser(request,response,listUser);
                    System.out.println("=======导出文件了======");
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }
    

      获取数据的  sql

    <select id="myPageAllUser" resultType="User">
            select * from `user`
            order
    		by createtime desc
        </select>
    

      导出   excel  表格的  代码:

     /**
         * 导出数据成excel表格
         * @param response
         * @param listUser
         * @param
         */
        public void exportUser(HttpServletRequest request,HttpServletResponse response, List<User> listUser) {
            WritableWorkbook wwb = null;
            OutputStream os = null;
            SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
            try {
                os = response.getOutputStream();// 取得输出流
                response.reset();// 清空输出流
                // excel 文件的 MIME 类型
                response.setContentType("application/msexcel");
                //在导出前对名称根据浏览器做下处理
                String agent = request.getHeader("USER-AGENT").toLowerCase();
                response.setContentType("application/vnd.ms-excel");
                //***************很重要
                String fileName = "问卷调查";//文件名中文乱码
                String codedFileName = java.net.URLEncoder.encode(fileName, "UTF-8");
                if (agent.contains("firefox")) {
                    response.setCharacterEncoding("utf-8");
                    response.setHeader("content-disposition", "attachment;filename=" + new String(fileName.getBytes(), "ISO8859-1") + ".xls");
                } else {
                    response.setHeader("content-disposition", "attachment;filename=" + codedFileName + ".xls");
                }
    
    
              /*  response.setHeader("Content-disposition",
                        "attachment; filename=courseStatistics.xls");// 设定输出文件头
                response.setContentType("application/msexcel");// 定义输出类型*/
                // os = new FileOutputStream(fileName);
                wwb = jxl.Workbook.createWorkbook(os);
                WritableSheet ws = wwb.createSheet("课程统计", 10); // 创建一个工作表
    
                // 设置标题单元格的文字格式
                WritableFont titleFont = new WritableFont(WritableFont.createFont("宋体"), 12,
                        WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
                WritableCellFormat titleFontFormat = new WritableCellFormat(titleFont);
                titleFontFormat.setVerticalAlignment(VerticalAlignment.CENTRE);
                titleFontFormat.setAlignment(Alignment.CENTRE);
                titleFontFormat.setBackground(Colour.LIGHT_TURQUOISE);
                /*======================================================================第二种标题====================================*/
                WritableFont titleFont1 = new WritableFont(WritableFont.createFont("宋体"), 12,
                        WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
                WritableCellFormat titleFontFormat1 = new WritableCellFormat(titleFont1);
                titleFontFormat1.setVerticalAlignment(VerticalAlignment.CENTRE);
                titleFontFormat1.setAlignment(Alignment.CENTRE);
                titleFontFormat1.setBackground(Colour.LAVENDER);
                /*=======================================================================第三种标题===================================*/
                WritableFont titleFont2 = new WritableFont(WritableFont.createFont("宋体"), 12,
                        WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
                WritableCellFormat titleFontFormat2 = new WritableCellFormat(titleFont2);
                titleFontFormat2.setVerticalAlignment(VerticalAlignment.CENTRE);
                titleFontFormat2.setAlignment(Alignment.CENTRE);
                titleFontFormat2.setBackground(Colour.LIGHT_GREEN);
                /*=======================================================================第四种标题===================================*/
                WritableFont titleFont3 = new WritableFont(WritableFont.createFont("宋体"), 12,
                        WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
                WritableCellFormat titleFontFormat3 = new WritableCellFormat(titleFont3);
                titleFontFormat3.setVerticalAlignment(VerticalAlignment.CENTRE);
                titleFontFormat3.setAlignment(Alignment.CENTRE);
                titleFontFormat3.setBackground(Colour.LIGHT_ORANGE);
    
                 /*=======================================================================第五种标题===================================*/
                WritableFont titleFont4 = new WritableFont(WritableFont.createFont("宋体"), 12,
                        WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
                WritableCellFormat titleFontFormat4 = new WritableCellFormat(titleFont4);
                titleFontFormat4.setVerticalAlignment(VerticalAlignment.CENTRE);
                titleFontFormat4.setAlignment(Alignment.CENTRE);
                titleFontFormat4.setBackground(Colour.YELLOW);
    
                // 设置内容数据单元格的文字格式
                WritableFont cellFont = new WritableFont(WritableFont.createFont("宋体"), 12,
                        WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
                WritableCellFormat cellFontFormat = new WritableCellFormat(cellFont);
                cellFontFormat.setVerticalAlignment(VerticalAlignment.CENTRE);//垂直居中
                cellFontFormat.setAlignment(Alignment.CENTRE);//文字对齐方式
    
    
                WritableFont firstCellFont = new WritableFont(WritableFont.createFont("宋体"), 12,
                        WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
                WritableCellFormat firstCellFontFormat = new WritableCellFormat(firstCellFont);
    
                ws.getSettings().setDefaultColumnWidth(18);
                ws.getSettings().setDefaultRowHeight(300);
                ws.setColumnView(0, 26);
                ws.setColumnView(1, 26);
                ws.setColumnView(2, 24);
                ws.setColumnView(3, 24);
                ws.setColumnView(12, 24);
                ws.setColumnView(13, 24);
                ws.setColumnView(14, 24);
                ws.setColumnView(15, 24);
                ws.setColumnView(16, 24);
                ws.setColumnView(17, 24);
                ws.setColumnView(18, 24);
                // 填充标题
                //ws.addCell(new Label(0, 0, "课程知识点规划", titleFontFormat));
                //ws.mergeCells(0, 0, 3, 0);//合并单元格 第一个参数从哪个列开始合并,第二个参数为第几行,第三个参数为到那一列结束,第四个参数为合并几行
    
                ws.addCell(new Label(0, 0, "用户名", titleFontFormat));
                ws.mergeCells(0, 0, 0, 1);
                for (int j = 0; j < listUser.size(); j++) {
                    User entity = listUser.get(j);
                    ws.addCell(new Label(0, j + 2, "" + entity.getUname(),
                            firstCellFontFormat));
                }
    
                ws.addCell(new Label(1, 0, "可以登录", titleFontFormat));
                ws.addCell(new Label(1, 1, "登录名", titleFontFormat));
                for (int j = 0; j < listUser.size(); j++) {
                    User entity = listUser.get(j);
                    ws.addCell(new Label(1, j + 2, "" + entity.getLoginname(),
                            firstCellFontFormat));
                }
                ws.addCell(new Label(2, 1, "邮箱", titleFontFormat));
                for (int j = 0; j < listUser.size(); j++) {
                    User entity = listUser.get(j);
                    ws.addCell(new Label(2, j + 2, "" + entity.getEmile(),
                            firstCellFontFormat));
                }
                ws.mergeCells(1, 0, 2, 0); // 向右合并6列单元格
    
                ws.addCell(new Label(3, 0, "创建时间", titleFontFormat));
                ws.mergeCells(3, 0, 0, 1);
                for (int j = 0; j < listUser.size(); j++) {
                    User entity = listUser.get(j);
                    ws.addCell(new Label(3, j + 2, "" + df.format(entity.getCreatetime()),
                            cellFontFormat));
                }
                ws.toString();
                wwb.write();
    
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                try {
                    if (wwb != null) {
                        wwb.close();
                    }
                    if (os != null) {
                        os.close();
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
    
    
        }

    (6)上传文件

    <%@ page contentType="text/html;charset=UTF-8" language="java"  %>
    <%@include file="/WEB-INF/views/head/headen.jsp"%>
    
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html>
    <head>
        <title>首页</title>
        <link rel="stylesheet" type="text/css" href="${ctx}/js/jquery-easyui-1.4.3/themes/gray/easyui.css"/>
        <link rel="stylesheet" type="text/css" href="${ctx}/js/jquery-easyui-1.4.3/themes/icon.css"/>
        <script type="text/javascript" src="${ctx}/js/jquery-1.11.1.min.js"></script>
        <script type="text/javascript" src="${ctx}/js/jquery-easyui-1.4.3/jquery.easyui.min.js"></script>
        <script type="text/javascript" src="${ctx}/js/jquery-easyui-1.4.3/locale/easyui-lang-zh_CN.js"></script>
        <script type="text/javascript" src="${ctx}/js/dateFormat.js"></script>
        <script type="text/javascript" src="${ctx}/js/layer/layer.js"></script>
        <script type="text/javascript" src="${ctx}/js/json2.js"></script>
    
    </head>
    <body>
    <style>
        .box{
             800px;
            padding-left: 300px;
            padding-top: 300px;
            display: block;
        }
        .work{
            border-bottom:1px dotted #000;
            display:inline;
             40px;
        }
        .work a{
            color: white;
            cursor:pointer;
        }
        #deleteuu{
            margin-left: 10px;
        }
        #xiangqing{
            margin-left: 10px;
        }
    </style>
    <script type="text/javascript">
        var totalCount=0;
        $(function(){
            parent.$("#rightContent").css("height",800);//修改iframe高度
            showuser();
        });
        function showuser() {
            $("#zhanshi").datagrid({
                remoteSort:false,// 页面排序
                singleSelect:true,// 为true时 单选一行
                nowrap:false,//设置为true,当数据长度超出列宽时将会自动截取
                striped : true,//设置为true将交替显示行背景。
                fitColumns:true,// 自动填满datagrid指定的宽度
                url :"${ctx}/test/twouser",// 进入后台的 url 地址
                columns :
                    [ [
                        {
                            field : 'uid',
                            title : 'ID',
                            align : 'center',
                            hidden:true
                        }, {
                            field : 'uname',
                            title : '姓名',
                            width : 250
                        },{
                            field : 'loginname',
                            title : '登录名',
                            align : 'center',
                            width : 100
                        },{
                            field : 'createtime',
                            title : '创建时间',
                            align : 'center',
                            width : 137,
                            formatter:function(value,row,index)
                            {
                                if(value==null||value==''){
                                    return "--";
                                }else{
                                    return  formatDate(row.createtime);
                                }
                            }
                        },{
                            field : 'setOperation',
                            title : '操作',
                            align : 'center',
                            width : 146,
                            formatter:function(value,row,index)
                            {
                                var str = "<span class='subOperation'>" +
                                    "<a  href='javascript:updataUser("+row.uid+");' name='updata' id='updata'>修改</a>" +
                                    "<a  href='javascript:getDeleteUser("+row.uid+");' name='deleteuu' id='deleteuu'>删除</a>" +
                                    "<a  href='javascript:xiangqingUser("+row.uid+");' name='xiangqing' id='xiangqing'>详情</a>" +
                                    "</span>";
                                return str;
                            }
                        }
                    ] ],
                loadMsg : '数据装载中......',
                singleSelect : false,//为true时只能选择单行
                fitColumns : false,// 为true 时允许表格自动缩放,以适应父容器
                idField : 'uid',// 当数据表格初始化时 以那一列来排序
                remoteSort : false,
                frozenColumns : [ [ {
                    field : 'ck',
                    checkbox : true
                } ] ],
                pagination : true,  //分页
                rownumbers : false,// 行数
                pageSize : 15,//每页显示的记录条数,默认为15 
                pageList : [ 10, 15, 20, 30 ],
                onLoadSuccess : function(row) {
                    totalCount = row.total;
                    $(this).datagrid('clearSelections'); //清空选中的行
                }
            });
            var userGridPager = $("#zhanshi").datagrid('getPager');
            $(userGridPager).pagination({
                beforePageText : '第',
                afterPageText : '页    共 {pages} 页',
                displayMsg : '当前显示 {from} - {to} 条  共 {total} 条记录'
            });
    
        }
        /* 修改用户 */
        function updataUser(uid) {
            //预留给子页面返回当前页面使用
            parent.$("#srcUrl").val(parent.$("#rightContent").attr("src"));
            //跳转子页面-添加左侧栏目
            parent.$("#rightContent").attr("src","${ctx}/test/sanye/"+uid);
        }
        /* 添加用户 */
        function insertUser() {
            //预留给子页面返回当前页面使用
            parent.$("#srcUrl").val(parent.$("#rightContent").attr("src"));
            //跳转子页面-添加左侧栏目
            parent.$("#rightContent").attr("src","${ctx}/test/inertOne");
        }
        /* 删除用户 */
        function deleteUser() {
            var rows=$("#zhanshi").datagrid('getSelections');
            var uids = [];
            if(rows.length==0){
                parent.layer.alert("请选择需要删除的记录!",{icon: 0, title:'提示'});
                return;
            }else{
                for(var i=0; i<rows.length; i++){
                    uids.push(rows[i].uid);
                }
                getDeleteUser(uids);
            }
        }
        function getDeleteUser(uids) {
                parent.layer.confirm("确定要删除吗?",{btn: ["确定","取消"],icon: 3, title:"提示"}, function(r) {
                    if (r) {
                        parent.layer.close(r);
                        $.ajax({
                            url:"${ctx}/test/deleteUser?uids="+uids,
                            dataType:"json",
                            type:"post",
                           /* data:{
                                "uids":rows.uid
                            },*/
                            success:function (data) {
                                if(data.flag==true){
                                    parent.layer.alert("删除成功!",{icon: 1, title:'提示'});
                                    /* window.location.href="/test/diyi"; */
                                }else{
                                    parent.layer.alert("删除失败!",{icon: 2, title:'提示'});
                                }
                                $("#zhanshi").datagrid('reload');
                            }
                        });
                    }
                })
    
        }
        
        /* 导出数据 */
        function daoUser() {
            if(totalCount<0){
                parent.layer.alert("暂无数据,无法导出!",{icon: 0, title:'提示'});
            }
            window.location.href="${ctx}/test/exportUser";
        }
        /* 上传文件页面 */
        function chuanUser() {
            //预留给子页面返回当前页面使用
            parent.$("#srcUrl").val(parent.$("#rightContent").attr("src"));
            //跳转子页面-添加左侧栏目
            parent.$("#rightContent").attr("src","${ctx}/test/chuan");
        }
    
       
      </script>
    <div class="box" id="my_box">
        <div class="work" style="margin-left: 596px;background-color: #2e8ded;"  align="center">
            <a id="insert" name="insert" onclick="insertUser();" >添加</a>
        </div>
        <div class="work" style="margin-left: 10px;background-color: #c9302c;"  align="center">
            <a id="delete" name="delete" onclick="deleteUser();" >删除</a>
        </div>
        <div class="work" style="margin-left: 10px;background-color: #ffab2e;"  align="center">
            <a id="dao" name="dao" onclick="daoUser();" >导出</a>
        </div>
        <div class="work" style="margin-left: 10px;background-color: #ffab2e;"  align="center">
            <a id="chuan" name="chuan" onclick="chuanUser();" >上传文件</a>
        </div>
        <div class="work" style="margin-left: 10px;background-color: #ffab2e;"  align="center">
            <a id="shuzhuang" name="shuzhuang" onclick="shu();">树状结构</a>
        </div>
        <div class="main_1" id="zhanshi">
    
        </div>
    
    </div>
    
    </body>
    </html>
    

      后台代码:

     @RequestMapping("/chuan")
        public String diwu(Model model){
            return "jsps/five";
        }
    

      five.jsp  页面    上传文件到本地项目指定目录下,然后写入数据库中

    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <%@include file="/WEB-INF/views/head/headen.jsp"%>
    
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html>
    <head>
        <title>文件上传页面</title>
        <link rel="stylesheet" type="text/css" href="${ctx}/js/jquery-easyui-1.4.3/themes/gray/easyui.css"/>
        <link rel="stylesheet" type="text/css" href="${ctx}/js/jquery-easyui-1.4.3/themes/icon.css"/>
        <script type="text/javascript" src="${ctx}/js/jquery-1.11.1.min.js"></script>
        <script type="text/javascript" src="${ctx}/js/jquery-easyui-1.4.3/jquery.easyui.min.js"></script>
        <script type="text/javascript" src="${ctx}/js/jquery-easyui-1.4.3/locale/easyui-lang-zh_CN.js"></script>
       <%-- <script type="text/javascript" src="${ctx}/js/ajaxfileupload.js"></script>--%>
        <script type="text/javascript" src="${ctx}/js/ajaxupload.3.6.js"></script>
        <script type="text/javascript" src="${ctx}/js/dateFormat.js"></script>
        <script type="text/javascript" src="${ctx}/js/layer/layer.js"></script>
        <script type="text/javascript" src="${ctx}/js/json2.js"></script>
    
    </head>
    <>
    <style>
        .wenjian_shangchaun{
             185px;
            height: 45px;
            background-color: #00a2e8;
            color: #fff;
            margin-left: 12px;
            font-size: 18px;
            cursor:pointer;
        }
        #sub{
            100px;
            height:35px;
            background-color:#00a2e8;
            color:#fff;
            cursor:pointer;
            margin-right: 20px;
        }
        .xiazai{
             185px;
            height: 45px;
            background-color: #00a2e8;
            color: #fff;
            margin-left: 12px;
            font-size: 18px;
            cursor:pointer;
        }
        /*#mydiv+input{
            100%!important;
            height:100%!important;
        }*/
    </style>
    <div id="box_one" style="margin:200px">
        <div id="index_1">
            <input type="hidden"  id="uid" name="uid" value=""/>
        </div>
        <div id="index_2">
            <label>学生姓名*:</label>
            <div>
                <input type="text" id="uname" name="uname" value=""/>
                <%--<textarea id="uname" style=" 99%;">${user.uname}</textarea>--%>
            </div>
        </div>
        <div id="index_3">
            <label>登录名*:</label>
            <div>
                <input type="text" id="loginname" name="loginname" value=""/>
                <%--<textarea id="loginname" style=" 99%;">${user.loginname}</textarea>--%>
            </div>
        </div>
        <div id="index_4">
            <label>邮箱*:</label>
            <div>
                <input type="text" id="emile" name="emile" value=""/>
                <%--<textarea id="loginname" style=" 99%;">${user.loginname}</textarea>--%>
            </div>
        </div>
        <%--上传文件--%>
        <div id="index_5">
            <div style="clear:both;padding-bottom:15px;margin-top: 10px;">
                <label>上传文档*:</label>
                <button id="file1" class="wenjian_shangchaun" onclick="uploadFile(this)">上传文档</button>
                <span id="upshow" class="upload-show" style="left: 20px;display: none">
    
    		</span>
            </div>
            <div id="up-loading" class="upload-loading" style="display: none;padding-top: 10px;">
                <div style="float: left"><img src='${ctx}/images/show.gif'/></div>
                <div class="upload-answer-loading"><span>正在上传,请稍后...</span></div>
            </div>
            <input id="file" name="file" type="hidden" value=""/>
            <input id="fileName" name="fileName" type="hidden" value=""/>
        </div>
    
    </div>
    <div style="margin:196px" id="mydiv">
        <input type="button" id="sub" name="sub" onclick="submi()" value="保存"/>
    </div>
    
    <%-- js部分 --%>
    <script type="text/javascript">
        var srcUrl=parent.$("#srcUrl").val();//父页面url地址,为了返回上一级使用
        var fileName; //后台传过来的上传文件名
        var fName="";
        var uid;
        /* 上传文档 */
        function uploadFile(button){
            new AjaxUpload(button,{
                action:"${ctx}/test/upload22",
                id:'file1',
                name:'upload',
                onSubmit : function(file, ext,size){
                    if (!(ext && /^(pdf|pdfx|doc|docx)$/.test(ext))) {
                        parent.layer.alert("您上传的文件格式不对,请重新选择!",{icon: 0, title:'提示'});
                        return false;
                    }
                    var fileMaxSize = 4 * 1024 * 1000;
                    if (size > fileMaxSize) {
                        parent.layer.alert("您上传的文件大小过大,请重新选择!",{icon: 0, title:'提示'});
                        return false;
                    }
                    $("#up-loading").show();
                    $("#upshow").hide();
                    this.disable();
                },
                onComplete:function (file,response) {
                    var result=eval("("+response+")");
                    if(result.flag == true){
                        parent.layer.alert("上传成功",{icon: 1, title:'提示'});
                        fileName = result.fileOldName;
                        fName = "<span>"+fileName+"</span>";
                        $("#file").val(result.relPath);// 上传文件地址
                        $("#upshow").html(fName);// 上传文件名
                        $("#fileName").val(fileName);// 上传文件名
                        $("#up-loading").hide();
                        $("#upshow").show();
                    }else{
                        parent.layer.alert("上传失败",{icon: 2, title:'提示'});
                    }
                    this.enable();
                }
            });
        }
    
        function submi() {
            var uname=$("#uname").val();
            var loginname=$("#loginname").val();
            var emile=$("#emile").val();
            var file=$("#file").val();
            var fileName=$("#fileName").val();
            var datas={
                'uname': uname,
                'loginname': loginname,
                'emile': emile,
                'file': file,
                'fileName':fileName
            };
            parent.$("#rightContent").css("height",1000);//修改iframe高度
            $.ajax({
                type:'post',
                dataType:'json',
                url:"${ctx}/test/updata",
                data:datas,
                success:function (data) {
                    if(data.flag == true){
                        parent.layer.alert("添加成功!",{icon: 1, title:'提示'});
                       /* parent.$("#rightContent").attr("src",srcUrl);//返回上一级*/
                        parent.layer.closeAll();
                        $("#index_5").hide();
                        $("#index_6").show();
                        $("#mydiv").hide();
                        $("#xiazaixianshi").html( $("#upshow").html());
                    }else {
                        parent.layer.alert("添加失败!",{icon: 2, title:'提示'});
                    }
                }
            })
        }
    </script>
    </body>
    </html>
    upload22 上传文档  后台代码:
    @RequestMapping(value = "/upload22")
        @ResponseBody
        public String upload22(@RequestParam("upload") MultipartFile upload, HttpServletRequest request,HttpServletResponse response) throws Exception{
            System.out.println("上传文档走了========================================"+upload);
            JSONObject result = new JSONObject();
            String prefix;
            String filename;
            String rootPath = null;
            try {
                rootPath = 	request.getSession().getServletContext().getRealPath("/WEB-INF/resource/upload/");/* 得到上传文件保存地址 */
                String filetype = "";
                String fileOldName = upload.getOriginalFilename(); /* 得到上传文件的名字 */
                System.out.println("——————————————————上传文件名:"+fileOldName);
                int index = upload.getOriginalFilename().lastIndexOf(".");
                if (index > -1) {
                    filetype = upload.getOriginalFilename().substring(index + 1);
                }
                prefix = "/data/" + filetype + "/" + DateTimeUtils.getNowTimeString();
                System.out.println("——————————————————上传文件名前的目录:"+prefix);
                filename = UUID.randomUUID().toString() + "." + filetype;
                File copyFile = new File(rootPath + prefix + filename);
                if (!copyFile.getParentFile().exists()) {  /* 判断地址是否存在 */
                    copyFile.getParentFile().mkdirs();  /* 如果不存在,就创建新的 */
                }
                upload.transferTo(copyFile);
                if(filetype.toLowerCase().equals("srt")){  /* 当我们不知道文件编码格式,通过如下方法获取 */
                    String charset = EncodingDetect.getJavaEncode(copyFile.getPath());/* 获得文件编码 */
                    if(StringUtils.isNotBlank(charset)){
                        String content = FileUtils.readFileToString(copyFile, charset);/* 根据文件编码获得文件内容 */
                        FileUtils.writeStringToFile(copyFile, content, "utf-8"); /* 写入一行数据,如果里头有值则会被替换 */
                    }
                }
                System.out.println("最终的文件地址:"+prefix + filename);
                result.put("relPath", prefix + filename);
                result.put("filename", filename);
                result.put("fileOldName", fileOldName);
                result.put("flag", true);
            } catch (Exception e) {
                result.put("flag", false);
                e.printStackTrace();
            }
            response.setContentType("text/html;charset=UTF-8");
            response.getWriter().print(result);
            return null;
        }
    

      上传文件完成  保存 文件(相当于添加数据到数据库)

    @RequestMapping(value = "/updata", produces = "application/json;charset=UTF-8")
        @ResponseBody
        public String detupdata(User uu){
            JSONObject result = new JSONObject();
            Date date = new Date();
            result.put("flag",false);
            if(uu.getUid()!=null){ // 修改方法
                uu.setCreatetime(date);
                userService.updataUser(uu);
                result.put("flag",true);
                System.out.println("^^^^^^^^^^^^^^^修改用户");
            }else{                 // 添加方法
                if(StringUtils.isBlank(uu.getFile())){
                    uu.setFile("暂无上传文档");
                }
                uu.setCreatetime(date);
                userService.insertUser(uu);
                System.out.println("^^^^^^^^^^^^^^^添加用户");
                result.put("flag",true);
            }
            return JSON.toJSONString(result);
        }
    

      sql 

    <insert id="insertUser" parameterType="User">
            INSERT INTO `user` (uid, uname, loginname, password, emile,createtime,file,fileName) values(#{uid},#{uname},#{loginname},#{password},#{emile},#{createtime},#{file},#{fileName})
        </insert>
    

     sasyui tree 树状结构功能 我只做了 静态的。等我做完 动态的 在来粘贴。

    欢迎来我的评论区吐槽。。。。。。。。。。。。。。。。。。。



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  • 原文地址:https://www.cnblogs.com/bb1008/p/9336395.html
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