Spring 之注解事务 @Transactional

1.定义一个数据源

<beanid="comboPooledDataSource"class="com.mchange.v2.c3p0.ComboPooledDataSource">

     <propertyvalue="${jdbc.driverClass}"name="driverClass"/>

     <propertyvalue="${jdbc.url}"name="jdbcUrl"/>

     <propertyvalue="${jdbc.username}"name="user"/>

     <propertyvalue="${jdbc.password}"name="password"/>

     </bean>

2.定义jdbc的jdbcTemplate

<beanid="jdbcTemplate"class="org.springframework.jdbc.core.JdbcTemplate">

     <propertyname="dataSource"ref="comboPooledDataSource"></property>

     

     </bean>

3.配置事物管理器

<beanname="transactionManager"class="DataSourceTransactionManager">

     <propertyname="dataSource"ref="comboPooledDataSource"></property>

</bean

4.开启事物

<!-- 开启注解事物管理   替代了xml里面的切面和通知-->

     <tx:annotation-driventransaction-manager="transactionManager"/>

5.在该Bean的代码中标注@Transactional

service层  逻辑处理层  也就是真正实现方法层