Spring+Mybatis的整合（中）

配置文件分四个

1. spring.xml

2. springmvc-servlet.xml

3. spring-mybatis.xml

4. jdbc.properties

• spring.xml配置

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

• springmvc-servlet.xml

<context:component-scan base-package="yb.controller"></context:component-scan>

<!-- 视图解析器 -->

<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

<property name="prefix" value="/WEB-INF/html/"></property>

<property name="suffix" value=".jsp"></property>

</bean>

• spring-mybatis.xml

<!-- 加载外部资源文件 -->

<bean

class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

<property name="location" value="classpath:jdbc.properties"></property>

</bean>

<!-- 配置连接池 -->

<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"  

     >  

        <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>

<!-- myBatis文件 -->

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

<property name="dataSource" ref="dataSource" />

<!-- 自动扫描entity目录, 省掉Configuration.xml里的手工配置 -->

<property name="mapperLocations" value="classpath:yb/mapping/*.xml" />

</bean>

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

<property name="basePackage" value="yb.dao" />

<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />

</bean>

• jdbc.properties 配置

  jdbc.driver=com.mysql.jdbc.Driver  

  jdbc.url=jdbc:mysql://127.0.0.1:3306/test
  

  jdbc.username=

  jdbc.password=

    mybatis的映射文件（yb.mapping.usermapping.xml）

<mapper namespace="yb.dao.UsersMapping" >

<resultMap type="yb.entity.Users" id="userMap">

<id property="id" column="id"/>

<result  property="userName" column="userName"/>

<result  property="password" column="password"/>

</resultMap>

<select id="findUserById" parameterType="int"  resultMap="userMap">

select * from Users where id=#{id}

</select>

</mapper>