Spring整合mybatis的配置文件

##持久层配置文件
1、引入外部配置文件 例如db.properties
2、配置数据源 例如org.apache.commons.dbcp2.BasicDataSource
3、配置SqlSessionFactoryBean,用于创建SqlSessionFactory的
4、配置MapperScannerConfigurer 用于扫描mapper接口所在包，创建Mapper 代理对象

<?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"
	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">
  
  <!-- 配置内容：
  	1.数据源，引入的外部属性配置文件
  	2.SqlSessionFactoryBean
  	3.MapperScannerConfigurer
   -->
   
   <!-- 配置引入外部的属性配置文件 -->
  <context:property-placeholder location="classpath:mybatis/db.properties"/>
   <!-- 1.配置数据源 -->
   <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource" destroy-method="close">
  		<property name="driverClassName" value="${jdbc.driver}"></property>
  		<property name="url" value="${jdbc.url}"></property>
  		<property name="username" value="${jdbc.username}"></property>
  		<property name="password" value="${jdbc.password}"></property>
  		<!-- 还可以有数据源的其他配置  -->
  </bean>
  
   <!-- 2.配置SqlSessionFactoryBean,用于创建SqlSessionFactory的 -->
   <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
   		<!-- 注入相关属性 -->
   		<property name="dataSource" ref="dataSource"></property>
   		<!-- 注入使用的别名 所在package ,当有多个package需要配置时，使用分隔符 , -->
   		<property name="typeAliasesPackage" value="com.geng.pojo"></property>
   		<!-- 注入 映射文件所在路径 -->
   		<property name="mapperLocations" value="classpath:com/geng/mapper/*Mapper.xml"></property>
   		<!-- 注入configLocation 属性，绑定mybatis的配置文件 -->
   </bean>
   
   <!-- 3.配置MapperScannerConfigurer 用于扫描mapper接口所在包，创建Mapper代理对象 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    	<!-- 注入basePackage mapper接口所在包 -->
       <property name="basePackage" value="com.geng.mapper" />
       <!-- 一定要注入 sqlSessionFactoryBeanName -->
       <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
    </bean>
</beans>

业务层配置

1、配置事务管理器，关联DataSource
2、配置事务通知
3、使用aop 配置 那些类使用事务管理

<?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: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/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/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
        
       <context:component-scan base-package="com.geng.service"></context:component-scan>
       
       <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
         <property name="dataSource" ref="dataSource"></property>
       </bean>
       <tx:advice id="txAdvice">
           <tx:attributes>
            <tx:method name="find*" propagation="SUPPORTS" read-only="true" />
            <tx:method name="add*" propagation="REQUIRED" read-only="false" />
             <tx:method name="delete*" propagation="REQUIRED" read-only="false" />
              <tx:method name="update*" propagation="REQUIRED" read-only="false" />
           </tx:attributes>
       </tx:advice>
       <aop:config>
         <aop:pointcut expression="execution(* com.geng.service.*.*(..))" id="pointCut"/>
         <aop:advisor advice-ref="txAdvice" pointcut-ref="pointCut"/>
       </aop:config>
        
        </beans>