SSM框架整合

SSM（Spring MVC、Mybatis、Spring）

简单说明：

1.MyController是springmvc的控制文件，相当于struts2的action和struts.xml
2.UserMapper.xml是实体类dao的映射文件，UserMapper.java是dao接口，没有实现类，直接和它的xml文件整合在一起。UserMapper.xml、UserMapper.java和实体类可以通过mybatis-generator插件直接形成。
3.IUserService接口和UserServiceImpl是服务层的接口和实现，给MyController调用
4.具体实例链接 http://download.youkuaiyun.com/detail/zzhao114/9748368，实现简单的增删查改操作 （含mybatis-generator插件及使用说明）

整体结构图：

mysql的属性配置文件：

jdbc.driver=com.mysql.jdbc.Driver
jdbc.password=admin
jdbc.username=root
jdbc.url=jdbc\:mysql\://localhost\:3306/ssm?useUnicode\=true&characterEncoding\=gbk

Spring和myBatis整合配置文件：

<?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:p="http://www.springframework.org/schema/p"
 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-3.0.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">
 <context:component-scan base-package="com.serviceImpl" />



 <!-- 配置数据库配置文件 -->
 <bean id="propertyConfigurer"
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
  <property name="location" value="classpath:mysql.properties" />
 </bean>

 <!-- 配置数据源 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
  destroy-method="close">
  <property name="driverClassName" value="${jdbc.driver}" />
  <property name="url" value="${jdbc.url}" />
  <property name="username" value="${jdbc.username}" />
  <property name="password" value="${jdbc.password}" />
 </bean>

 <!-- 配置sqlSessionFactory -->
 <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
  <property name="dataSource" ref="dataSource" />
  <!-- 自动扫描mapping.xml文件 -->
  <property name="mapperLocations" value="classpath:com/mapping/*.xml"></property>  
 </bean>
 <!-- DAO接口所在包名，Spring会自动查找其下的类 -->
 <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
  <property name="basePackage" value="com.dao" />
  <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
 </bean>
 <!-- 事务通知 -->
 <bean id="transactionManager"
  class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
  <property name="dataSource" ref="dataSource" />
 </bean>

 <bean id="user" class="com.pojo.User" scope="prototype"/>
</beans>

Spring-MVC配置文件：

<?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/mvc
              http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
              http://www.springframework.org/schema/beans
              http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
              http://www.springframework.org/schema/context
              http://www.springframework.org/schema/context/spring-context-3.0.xsd">
 <!-- 扫描所有的 controller -->
 <context:component-scan base-package="com.Controllers" />
 <!-- 启动注解驱动 SpringMVC 功能 -->
 <mvc:annotation-driven />
 <bean
  class="org.springframework.web.servlet.view.InternalResourceViewResolver">
  <property name="prefix" value="/" />
  <property name="suffix" value=".jsp" />
 </bean>
</beans>

实体类的映射文件：

<?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.dao.UserMapper">
 <resultMap id="BaseResultMap" type="com.pojo.User">
  <id column="id" property="id" jdbcType="INTEGER" />
  <result column="username" property="username" jdbcType="VARCHAR" />
  <result column="password" property="password" jdbcType="VARCHAR" />
 </resultMap>
 <sql id="Base_Column_List">
  id, username, password
 </sql>
 <select id="selectByPrimaryKey" resultMap="BaseResultMap"
  parameterType="java.lang.Integer">
  select
  <include refid="Base_Column_List" />
  from user
  where id = #{id,jdbcType=INTEGER}
 </select>
 <select id="selectAll" resultMap="BaseResultMap">
  select * from user
 </select>
 <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
  delete from user
  where id = #{id,jdbcType=INTEGER}
 </delete>
 <insert id="insert" parameterType="com.pojo.User">
  insert into user (id, username, password
  )
  values (#{id,jdbcType=INTEGER}, #{username,jdbcType=VARCHAR},
  #{password,jdbcType=VARCHAR}
  )
 </insert>
 <insert id="insertSelective" parameterType="com.pojo.User">
  insert into user
  <trim prefix="(" suffix=")" suffixOverrides=",">
   <if test="id != null">
    id,
   </if>
   <if test="username != null">
    username,
   </if>
   <if test="password != null">
    password,
   </if>
  </trim>
  <trim prefix="values (" suffix=")" suffixOverrides=",">
   <if test="id != null">
    #{id,jdbcType=INTEGER},
   </if>
   <if test="username != null">
    #{username,jdbcType=VARCHAR},
   </if>
   <if test="password != null">
    #{password,jdbcType=VARCHAR},
   </if>
  </trim>
 </insert>
 <update id="updateByPrimaryKeySelective" parameterType="com.pojo.User">
  update user
  <set>
   <if test="username != null">
    username = #{username,jdbcType=VARCHAR},
   </if>
   <if test="password != null">
    password = #{password,jdbcType=VARCHAR},
   </if>
  </set>
  where id = #{id,jdbcType=INTEGER}
 </update>
 <update id="updateByPrimaryKey" parameterType="com.pojo.User">
  update user
  set username = #{username,jdbcType=VARCHAR},
  password = #{password,jdbcType=VARCHAR}
  where id = #{id,jdbcType=INTEGER}
 </update>
</mapper>

插件的generatorConfig配置

生成时候就可以把这个配置文件删除

<?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>
 <classPathEntry location="E:/mysql-connector-java-5.0.0-beta-bin.jar" />
 <context id="store" targetRuntime="MyBatis3">
  <commentGenerator>
   <!-- 是否去除自动生成的注释 true：是 ： false:否 -->
   <property name="suppressAllComments" value="true" />
   <!-- 是否去除所有自动生成的文件的时间戳，默认为false -->
   <!-- <property name="suppressDate" value="false"/> -->
  </commentGenerator>
  <!--数据库连接的信息：驱动类、连接地址、用户名、密码 -->
  <jdbcConnection driverClass="com.mysql.jdbc.Driver"
   connectionURL="jdbc:mysql://localhost:3306/test" userId="root"
   password="admin">
  </jdbcConnection>
  <javaModelGenerator targetPackage="com.model"
   targetProject="Mybatis\src">
   <!-- enableSubPackages:是否让schema作为包的后缀 -->
   <property name="enableSubPackages" value="false" />
   <!-- 从数据库返回的值被清理前后的空格 -->
   <property name="trimStrings" value="true" />
  </javaModelGenerator>
  <!-- 配置生成相应的实体Mapper.xml，对于Mapper3.X我们需要把type="XMLMAPPER" -->
  <sqlMapGenerator targetPackage="com.mapping"
   targetProject="Mybatis\src">
   <property name="enableSubPackages" value="false" />
  </sqlMapGenerator>
  <!-- 配置生成相应的接口类，对应与Mapper.xml中的一系列CRUD方法SQL语句 -->
  <javaClientGenerator targetPackage="com.dao"
   targetProject="Mybatis\src" type="XMLMAPPER">
   <property name="enableSubPackages" value="false" />
  </javaClientGenerator>
  <!-- 用户表 -->
  <table schema="stone" tableName="user" domainObjectName="User"
   enableCountByExample="false" enableUpdateByExample="false"
   enableDeleteByExample="false" enableSelectByExample="false"
   selectByExampleQueryId="false">
  </table>
  <table schema="stone" tableName="role" domainObjectName="Role"
   enableCountByExample="false" enableUpdateByExample="false"
   enableDeleteByExample="false" enableSelectByExample="false"
   selectByExampleQueryId="false">
  </table>
 </context>
</generatorConfiguration>

web.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns="http://xmlns.jcp.org/xml/ns/javaee"
 xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
 id="WebApp_ID" version="3.1">

 <welcome-file-list>
  <welcome-file>index.jsp</welcome-file>
 </welcome-file-list>

 <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:spring-mvc.xml</param-value>
  </init-param>
  <load-on-startup>1</load-on-startup>
 </servlet>
 <servlet-mapping>
  <servlet-name>SpringMVC</servlet-name>
  <url-pattern>/</url-pattern>
 </servlet-mapping>

 <context-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>classpath:spring-mybatis.xml</param-value>
 </context-param>
 <listener>
  <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
 </listener>
</web-app>