SSM整合步骤

SSM- CRUD

SSM : SpringMVC+Spring+Mybatis

Create (新建) +Retrieve (查询) +Update(更新)+Delete(删除)

 功能点

1：分页

2：数据校验：JQuery前端校验+JSR后端校验。

3：ajax

4：Rest风格URL：使用HTTP协议请求方式的动词，来表示对对资源的操作：GET(查询)、POST(新增)、PUT(修改)、DELETE(删除)。

技术点

1：基础框架-SSM (SpringMVC+Spring+MyBatis)

2：数据库-MySQL 5

3：前端框架-bootstrap快速搭建简洁美观的前端界面。

4：项目的依赖管理-Maven。

5：分页插件-pagehelper

6：逆向工程-MyBatis Generator

基础环境搭建

1：创建一个maven工程

2：引入项目依赖的jar包

• spring
• springMVC
• Mybatis
• 数据库连接池，驱动包
• 其它包[  jstl , servlet-api ,  junit ]
  

maven 配置文件增加配置

阿里云下载镜像

 <!-- 中央仓库阿里云镜像下载-->
     <mirror>
      <id>alimaven</id>
      <mirrorOf>central</mirrorOf>
      <name>aliyun maven</name>
      <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
    </mirror>

版本

  <profile>
      <id>jdk1.8</id>
      <activation>
          <activeByDefault>true</activeByDefault>
              <jdk>1.8</jdk>
      </activation>
      <repositories>
          <maven.compiler.source>1.8</maven.compiler.source>
          <maven.compiler.target>1.8</maven.compiler.target>
          <maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion>   
      </repositories>
    </profile>

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>cn.yi</groupId>
    <artifactId>ssm-crud</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>

    <!-- 引入项目依赖的jar包 -->
    <!-- SpringMVC Spring -->
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>4.3.12.RELEASE</version>
        </dependency>

        <!-- Spring JDBC -->
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>4.3.12.RELEASE</version>
        </dependency>

        <!-- Spring aspect 面向切面编程 -->
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-aspects -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>4.3.12.RELEASE</version>
        </dependency>

        <!-- Mybatis -->
        <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.2</version>
        </dependency>

        <!-- Mybatis Spring 整合适配包 -->
        <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.1</version>
        </dependency>

        <!-- 数据库连接池c3p0 -->
        <!-- https://mvnrepository.com/artifact/c3p0/c3p0 -->
        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.1</version>
        </dependency>

        <!-- 数据库连接驱动包 -->
        <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.41</version>
        </dependency>

        <!-- 其它包[ jstl , servlet-api , junit ] -->
        <!-- https://mvnrepository.com/artifact/jstl/jstl -->
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.mortbay.jetty/servlet-api -->
        <dependency>
            <groupId>org.mortbay.jetty</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5-6.0.0</version>
            <scope>provided</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/junit/junit -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
        
        <!-- SpringTest Jar包 -->
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>4.3.12.RELEASE</version>
            <scope>test</scope>
        </dependency>
        
        <!--  使用mybatis的逆向工程生成对应的bean及mapper  -->
        <!-- https://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-core -->
        <dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
            <version>1.3.5</version>
        </dependency>
    </dependencies>
</project>

 3: 引入bootstrap前端框架

4: 编写SSM整合的关键配置文件

 web.xml spring,springMVC mybatis 使用mybatis的逆向工程生成对应的bean以及mapper

 web.xml

<?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_2_5.xsd"
    id="WebApp_ID" version="2.5">

    <!-- 1: 启动Spring容器 -->
    <!-- needed for ContextLoaderListener -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>

    <!-- Bootstraps the root web application context before servlet initialization -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!-- 2: 配置Springmvc的前端控制器，拦截所有请求 -->

    <!-- The front controller of this Spring Web application, responsible for 
        handling all application requests -->
    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <!-- Map all requests to the DispatcherServlet for handling -->
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!-- 3: 字符编码过滤器 ,一定要放在所有过滤器前面-->
    <filter>
        <filter-name>CharacterEncodingFilter</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>forceRequestEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
        <init-param>
            <param-name>forceResponseEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    
    <filter-mapping>
        <filter-name>CharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!-- 4: 使用Rest风格URL ，将页面普通的post请求转换为指定的delete或者put请求 -->
    <filter>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

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:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
    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.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">

    <context:component-scan base-package="cn.yi">
        <!-- 只扫描Controller控制器 -->
        <context:include-filter type="annotation"
            expression="org.springframework.stereotype.Controller" />
    </context:component-scan>
    
    
    <!-- Spring的配置，这里主要配置和设置业务逻辑 -->
    <!-- ==================数据源，事务控制 ……===================== -->
    <context:property-placeholder location="classpath:dbconfig.properties" />
    <bean id="pooledDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="jdbcUrl" value="${db.url}" />
        <property name="driverClass" value="${db.driver}" />        
        <property name="user" value="${db.user}" />
        <property name="password" value="${db.password}" />
    </bean>

    <!-- ===================配置和 Mybatis 的整合==================== -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    
        <!-- 指定mybatis 全局配置文件的位置 -->
        <property name="configLocation" value="classpath:mybatis-Config.xml"></property>
        <property name="dataSource" ref="pooledDataSource"></property>
        
        <!-- 指定mybatis mapper 文件的位置 -->
        <property name="mapperLocations" value="classpath:mapper/*.xml"></property>
    </bean>

    <!-- 配置扫描器，将mybatis接口的实现加入到IOC容器中 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--扫描所有dao接口的实现，加入IOC容器中 -->
        <property name="basePackage" value="cn.yi.crud.dao"></property>
    </bean>

    <!-- 配置一个可以执行批量的sqlSession -->
    <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
    <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"></constructor-arg>
    <constructor-arg name="executorType" value="BATCH"></constructor-arg>
    </bean>

    <!-- ======================事务控制的配置========================== -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!-- 控制数据源 -->
        <property name="dataSource" ref="pooledDataSource"></property>
    </bean>
    
    <!-- 开启基于注解的事务，也可以使用xml配置形式的事务(一般使用配置式) -->
    <aop:config>
        <!-- 切入点表达式 -->
        <aop:pointcut expression="execution(* cn.yi.crud.service..*(..))" id="txpoint" />
        <!-- 配置事务增强 -->
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txpoint" />
    </aop:config>

    <!-- 配置事务增强，事务如何切入 -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <!-- 所有方法都是事务方法 -->
            <tx:method name="*" />
            <!-- 已GET开始的所有方法 -->
            <tx:method name="get*" read-only="true" />
        </tx:attributes>
    </tx:advice>
    <!-- spring配置文件的核心点(数据源、与mybatis整合、事务控制) -->

</beans>

dispatcherServlet-servlet.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:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    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-3.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
        

    <!-- Springmvc 的配置文件，包含网站跳转逻辑的控制 -->
    <context:component-scan base-package="cn.yi" use-default-filters="false">        
        <!-- 只扫描Controller控制器 -->
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />
    </context:component-scan>
    
    <!-- 配置视图解析器，方便页面返回 -->
    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- 配置前缀 -->
        <property name="prefix" value="/WEB-INF/views/"></property>
        <!-- 配置后缀 -->
        <property name="suffix" value=".jsp"></property>
    </bean>
    
    <!-- 两个标准配置 -->
    <!--  将springmvc不能处理的请求要个tomcat处理 -->
    <mvc:default-servlet-handler/>
    <!-- 能支持springmvc 更高级功能，JSR303校验，快捷ajax……-->
    <mvc:annotation-driven/>
    
</beans>

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>
    <!-- 驼峰面命规则 -->
        <setting name="mapUnderscoreToCamelCase" value="true" />
    </settings>
    <typeAliases>
        <package name="cn.yi.crud.bean" />
    </typeAliases>
</configuration>

mbg.xml 

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
  PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
  "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

<generatorConfiguration>
    <context id="DB2Tables" targetRuntime="MyBatis3">
    
        <!-- 不生成xml注释 -->
        <commentGenerator>
            <property name="suppressAllComments" value="true" />
        </commentGenerator>
        
        <!--配置数据库连接 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
            connectionURL="jdbc:mysql://localhost:3306/ssm-crud" userId="root"
            password="">
        </jdbcConnection>

        <javaTypeResolver>
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!--指定javaBean生成的位置 -->
        <javaModelGenerator targetPackage="cn.yi.crud.bean"
            targetProject=".srcmainjava">
            <property name="enableSubPackages" value="true" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>

        <!--指定SQL映射文件,生成的位置 -->
        <sqlMapGenerator targetPackage="mapper" targetProject="./src/main/resources">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>

        <!--指定dao接口生成的位置，mapper接口 -->
        <javaClientGenerator type="XMLMAPPER"
            targetPackage="cn.yi.crud.dao" targetProject="./src/main/java">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>

        <!--table指定每个表生成策略 -->
        <table tableName="emp" domainObjectName="Employee"></table>
        <table tableName="dept" domainObjectName="Department"></table>
    </context>
</generatorConfiguration>

 5: 测试mapper