Spring使用XML进行声明式的事务管理

<!-- from the file 'context.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: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/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">

<!-- this is the service object that we want to make transactional -->
<bean id="fooService" class="x.y.service.DefaultFooService"/>

<!-- the transactional advice (what 'happens'; see the <aop:advisor/> bean below) -->
<tx:advice id="txAdvice" transaction-manager="txManager">  <!--定义advice，manager为txManager-->
<!-- the transactional semantics... -->
<tx:attributes>
<!-- all methods starting with 'get' are read-only -->
<tx:method name="get*" read-only="true"/>  <!--get*的方法为只读的，没有使用到事务，系统性能得到了优化 -->
<!-- other methods use the default transaction settings (see below) -->
<tx:method name="*"/>  <!-- 其他的方法使用required的属性传播特性-->
</tx:attributes>
</tx:advice>

<!-- ensure that the above transactional advice runs for any execution
of an operation defined by the FooService interface -->
<aop:config>  <!-- 定义一个切面，并添加一些advice-->
<aop:pointcut id="fooServiceOperation" expression="execution(* x.y.service.FooService.*(..))"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="fooServiceOperation"/>  <!--为切面的方法增加一些advice-->
</aop:config>

<!-- don't forget the DataSource -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
<property name="url" value="jdbc:oracle:thin:@rj-t42:1521:elvis"/>
<property name="username" value="scott"/>
<property name="password" value="tiger"/>
</bean>

<!-- similarly, don't forget the PlatformTransactionManager --> <!-- 定义TransactionManager-->
<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>

<!-- other <bean/> definitions here -->

</beans>