spring声明式事务处理

声明式事务处理：

　　* 程序员声明

　　* sping容器来处理事务

applicationContext.xml

<?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-2.5.xsd
    http://www.springframework.org/schema/aop 
    http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-2.5.xsd
    http://www.springframework.org/schema/tx 
    http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">

    <!-- 配置aop：
        × 目标类
        × 通知
        × aop配置
     -->
    <bean id="personService" class="jdbc.transaction.xml.PersonServiceImpl">
        <property name="personDao" ref="personDao" />
    </bean>

    <bean id="personDao" class="jdbc.transaction.xml.PersonDaoImpl">
        <property name="dataSource" ref="dataSource" />
    </bean>
    
    <!-- 配置事务管理器:告诉spring容器用哪种技术进行事物管理
     -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!-- 配置通知 -->
    <tx:advice id="tx" transaction-manager="transactionManager">
        <tx:attributes>
            <!-- save*以save开头的方法
                 * 除上述方法外的所有方法
                 isolation：隔离机制
                 propagation: 事务传播机制
             -->
            <tx:method name="save*" isolation="DEFAULT" propagation="REQUIRED" read-only="false"/>
            <tx:method name="*"/>
        </tx:attributes>
    </tx:advice>
    
    <!-- aop配置 -->
    <aop:config>
        <aop:pointcut expression="execution(* jdbc.transaction.xml.PersonServiceImpl.*(..))" id="perform"/>
        <aop:advisor advice-ref="tx" pointcut-ref="perform"/>
    </aop:config>
    
    <!-- 配置数据库连接池 -->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver" />
        <property name="url" value="jdbc:mysql://localhost:3399/db" />
        <property name="username" value="root" />
        <property name="password" value="3333456" />
    </bean>

</beans>