1. spring事务的回滚
spring的事务,一般配置在service层
spring事务中,不能使用try{...}catch{.....},否则不会发生回滚
service层抛出的异常,必须是RunTimeException或者其它子类的异常,否则不会发生回滚
示例:
public void save() throws Exception{
User user = new User() ;
user.setId("111111") ;
user.setName("xiaoming") ;
user.setPassword("password") ;
userMapper.insert(user) ;
save2();
}
public void save2() throws Exception{
User user1 = new User() ;
user1.setId("222222") ;
user1.setName("xiaoxi") ;
user1.setPassword("2222222222") ;
if(1!=3){
throw new RuntimeException();
}
userMapper.insert(user1) ;
}
2. spring事务的配置文件
<?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:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
">
<!-- 配置事务管理器,配置切面,配置切面的行为 -->
<!-- 事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 数据源 -->
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 通知
切面的行为,下面配置切面
-->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!-- 传播行为 -->
<tx:method name="save*" propagation="REQUIRED" /><!-- 在事务中执行 -->
<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" /><!-- 有事务,在事务中执行,没有的话,不会开启新的事务 -->
<tx:method name="select*" propagation="SUPPORTS" read-only="true" />
<tx:method name="get*" propagation="SUPPORTS" read-only="true" />
</tx:attributes>
</tx:advice>
<!-- 配置切面 -->
<aop:config>
<aop:advisor advice-ref="txAdvice"
pointcut="execution(* com.whir.springmvc.service.*.*(..))" />
</aop:config>
</beans>