ssm配置文件，方便以后使用

1 pojo中,默认PageInfo的成员变量，方便以后使用

    //当前页
    private int pageNum;
    //每页的数量
    private int pageSize;
    //当前页的数量
    private int size;
    //由于startRow和endRow不常用，这里说个具体的用法
    //可以在页面中"显示startRow到endRow 共size条数据"
  
    //当前页面第一个元素在数据库中的行号
    private int startRow;
    //当前页面最后一个元素在数据库中的行号
    private int endRow;
    //总记录数
    private long total;
    //总页数
    private int pages;
    //结果集
    private List<?> list;
  
    //第一页
    private int firstPage;
    //前一页
    private int prePage;
  
    //是否为第一页
    private boolean isFirstPage = false;
    //是否为最后一页
    private boolean isLastPage = false;
    //是否有前一页
    private boolean hasPreviousPage = false;
    //是否有下一页
    private boolean hasNextPage = false;
    //导航页码数
    private int navigatePages;
    //所有导航页号
    private int[] navigatepageNums;

2 db.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/ssm
jdbc.username=root
jdbc.password=root

3 log4j.properties

### 设置Logger输出级别和输出目的地 ###
###日志记录器输出级别：fanal > error > warn > info >debug###
log4j.rootLogger=debug, stdout,logfile

### 把日志信息输出到控制台 ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.SimpleLayout

### 把日志信息输出到文件：jbit.log ###
log4j.appender.logfile=org.apache.log4j.FileAppender
log4j.appender.logfile.File=jbit.log
log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %p %m%n

4 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>
        <!--打印日志可以看执行的sql语句-->
        <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>

    <typeAliases>
        <package name="day01.pojo"/>
    </typeAliases>

    <plugins>
        <!--    分页拦截器        -->
        <plugin interceptor="com.github.pagehelper.PageInterceptor"></plugin>
    </plugins>

</configuration>

5 spring-config.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"
       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.xsd">

    <context:component-scan base-package="day01.service"/>

    <context:property-placeholder location="classpath:db.properties"/>

    <bean id="hikariCPDataSource" class="com.zaxxer.hikari.HikariDataSource">
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>

    <!--  构建SqlSessionFactory对象  -->
    <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--    数据源  因为原本是数据是mybatis中配置，现在数据源在spring中配置，得传给mybatis    -->
        <property name="dataSource" ref="hikariCPDataSource"/>
        <!--   加载mybatis的配置文件，也可不要，在spring配置     -->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>
    <!-- 扫描接口与映射文件，并把这些对象放到容器中   -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactoryBeanName" value="sessionFactory"/>
        <!--   接口与映射文件所在的包     -->
        <property name="basePackage" value="day01.mapper"/>
    </bean>

</beans>

6 springmvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://www.springframework.org/schema/context
      http://www.springframework.org/schema/context/spring-context.xsd">

    <context:component-scan base-package="day01.controller"/>
    <!-- RequestMappingHandlerMapping处理器映射器
        RequestMappingHandlerAdapter处理器适配器
        支持注解开发的
       如果不配置会提供一组默认的，但是默认的不支持注解  就是不会去找@Controller
         所以我们使用mvc:annotation-driven标签来开启注解开发-->
    <mvc:annotation-driven />
    <!--  开放静态资源  -->
    <mvc:default-servlet-handler />
    <!--  视图解析器  -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

7 EmployeeMapper.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">

<!--命名空间 用于区分-->
<mapper namespace="day01.mapper.EmployeeMapper">

    <!--    id写唯一标识-->
    <!--    resultType写查询数据的返回类型-->

    <select id="list" resultType="Employee">
        select * from employee
    </select>

<!--    &lt;!&ndash;查询&ndash;&gt;-->
<!--    <select id="getById" parameterType="int" resultType="com.offcn.pojo.User">-->
<!--        select * from `user` where `id` = #{id}-->
<!--    </select>-->

    <!--    插入-->
    <insert id="save" parameterType="Employee">
        INSERT INTO `employee`(`no`,`name`,`sex`,`age`,`educational`,`department`,`position`,`birthday`)
        VALUES(#{no},#{name},#{sex},#{age},#{educational},#{department},#{position},#{birthday});
    </insert>

    <!--    修改-->
    <update id="update" parameterType="Employee">
        UPDATE `employee` SET `name` = #{name},`sex` = #{sex},`age` = #{age},`educational` = #{educational},
        `department` = #{department},`position` = #{position},`birthday` = #{birthday} WHERE `no` = #{no}
    </update>

    <select id="getByNo" resultType="Employee">
        select * from employee WHERE `no`=#{no}
    </select>

    <!--    修改-->
<!--    employee 有 '' 号，好像会错误，明天试试-->
    <delete id="remove">
        DELETE FROM employee WHERE `no` = #{no}
    </delete>

    <!--    总结：-->
    <!--    id是sql的唯一标识-->
    <!--    除查询和删除用id，是int的输入格式外，插入和修改的输入格式都是com.offcn.pojo.User（需要写地址）-->
    <!--    已知数据用标号 `，未知数据用类似 el表达式 #{} 。-->
    <!--    sql语句，尽量用大写-->

</mapper>

8 web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
        http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
         version="3.0">

    <!--  web容器一启动就来加spring的配置  -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring-config.xml</param-value>
    </context-param>

    <!--  监听器  -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <!--  / 代表拦所有路径      -->
        <url-pattern>/</url-pattern>
    </servlet-mapping>


    <!-- 解决post乱码 -->
    <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>
    </filter>
    <filter-mapping>
        <filter-name>CharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

9 pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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>com.key</groupId>
    <artifactId>ssm</artifactId>
    <version>1.0-SNAPSHOT</version>

    <packaging>war</packaging>

    <dependencies>

        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.75</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.48</version>
        </dependency>

        <dependency>
            <groupId>com.zaxxer</groupId>
            <artifactId>HikariCP</artifactId>
            <version>1.3.5</version>
        </dependency>

        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.6</version>
        </dependency>

        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper</artifactId>
            <version>5.1.2</version>
        </dependency>

        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.1.16.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.1.16.RELEASE</version>
        </dependency>


        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.1.16.RELEASE</version>
        </dependency>
        <!--   springg整合mybatis的包     -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.1</version>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.2</version>
                <configuration>
                    <port>80</port>
                    <!--  访问时不用加项目名称   -->
                    <path>/</path>
                    <uriEncoding>utf-8</uriEncoding>
                </configuration>
            </plugin>
        </plugins>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>
    </build>

</project>