Spring中的事物管理，基于spring的bean的配置

<?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:aop="http://www.springframework.org/schema/aop"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:tx="http://www.springframework.org/schema/tx"
    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-4.0.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
    
    <!-- 导入资源文件 -->
    <context:property-placeholder location="classpath:jdbc.properties"/>
    
    <!-- 配置c3p0数据源 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="user" value="${jdbc.user}"></property>
        <property name="password" value="${jdbc.password}"></property>
        <property name="driverClass" value="${jdbc.driverClass}"></property>
        <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
        
        <property name="initialPoolSize" value="${jdbc.initPoolSize}"></property>
        <property name="maxPoolSize" value="${jdbc.maxPoolSize}"></property>
    </bean>
    
    <!-- 配置spring 的 JdbcTemplate ，里面有一些jdbc的方法，实现对数据库数据的增删改查-->
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    
    <!-- 配置bean,可以识别它的属性和它的set方法 -->
    <bean id="bookShopDao" class="com.atguigu.spring.tx.xml.BookShopDaoImpl">
        <property name="jdbcTemplae" ref="jdbcTemplate"></property>
    </bean>
    
    <bean id="bookShopService" class="com.atguigu.spring.tx.xml.service.impl.BookShopServiceImpl">
        <property name="bookShopDao" ref="bookShopDao"></property>
    </bean>
    
    <bean id="cashier" class="com.atguigu.spring.tx.xml.service.impl.CashierImpl">
        <property name="bookShopService" ref="bookShopService"></property>
    </bean>
    
    <!-- 1.配置事物管理器 -->
    <bean id="transactionManager" 
    class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    
    <!-- 2.配置事物属性 -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
        <!-- 根据方法名指定事物的属性 -->
            <tx:method name="purchase" propagation="REQUIRES_NEW"/>
            <tx:method name="get*" read-only="true"/>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="*"/>
        </tx:attributes>
    </tx:advice>
    
    <!-- 3.配置事物切入点，以及把事物切入点和事物的属性关联起来, 
    * com.atguigu.spring.tx.xml.service.*.*(..)指扫描在这个包下继承这些接口的类的接口-->
    <aop:config>
        <aop:pointcut expression="execution(* com.atguigu.spring.tx.xml.service.*.*(..))" 
        id="txPointCut"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut"/>
    </aop:config>
</beans>