1.配置：applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
    xmlns:tx="http://www.springframework.org/schema/tx" 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-4.3.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
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-4.3.xsd">

    <!-- 读取db.properties -->
    <context:property-placeholder location="classpath:db.properties" />
    <!-- 1.配置数据源 -->
    <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource">
        <!-- 数据库驱动 -->
        <property name="driverClassName" value="${jdbc.driver}"></property>
        <!-- 连接数据库的URL -->
        <property name="url" value="${jdbc.url}"></property>
        <!-- 连接数据库的用户名,密码 -->
        <property name="username" value="${jdbc.username}"></property>
        <property name="password" value="${jdbc.password}"></property>
        <!-- 最大连接数 -->
        <property name="maxTotal" value="${jdbc.maxTotal}"></property>
        <!-- 最大空闲连接数 -->
        <property name="maxIdle" value="${jdbc.maxIdle}"></property>
        <!-- 初始化连接数 -->
        <property name="initialSize" value="${jdbc.initialSize}"></property>
    </bean>


    <!-- 4.事务管理器,依赖数据源 -->
    <bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>



    <!-- 通知传播行为 -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="save*" propagation="REQUIRED" />
            <tx:method name="insert*" propagation="REQUIRED" />
            <tx:method name="add*" propagation="REQUIRED" />
            <tx:method name="create*" propagation="REQUIRED" />
            <tx:method name="delete*" propagation="REQUIRED" />
            <tx:method name="update*" propagation="REQUIRED" />

            <tx:method name="find*" propagation="SUPPORTS" read-only="true" />
            <tx:method name="select*" propagation="SUPPORTS" read-only="true" />
            <tx:method name="get*" propagation="SUPPORTS" read-only="true" />
        </tx:attributes>
    </tx:advice>
    <!-- 编写aop让spring自动对目标生成代理,需要使用AspectJ的表达式 -->
    <aop:config>
        <!-- 切面：将切入点与通知整合 -->
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.boot_crm.core.service.*.*(..))" />
    </aop:config>


    <!-- 配置Mybatis工厂 -->
    <bean class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 注入数据源 -->
        <property name="dataSource" ref="dataSource"></property>
        <!-- 指定核心配置文件位置 -->
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
    </bean>


    <!-- Mapper代理开发(基于MapperScannerConfigurer) -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.boot_crm.dao"></property>
    </bean>

    <!-- 配置@Service扫描 -->
    <context:component-scan base-package="com.boot_crm.core.service"></context:component-scan>
</beans>