通过手动抛自定义异常实现spring事务回滚

spring默认事务管理：默认当一个方法出现RunTimeException（运行期异常）时会自动回滚事务。

有些时候，我们需要从业务上对spring事务进行控制，这时候，如果用spring的默认事务管理，事务没有回滚就达不到我们所期望的结果。

demo用的spring+mybatis+springmvc+mysql。

解决方法：

applicationContext-service.xml 中增删改方法加上rollback-for="MyException"，当方法抛出自定义异常被spring接收，会回滚事务。

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop" 
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:task="http://www.springframework.org/schema/task"
    xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans-4.2.xsd 
        http://www.springframework.org/schema/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd 
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-4.2.xsd 
        http://www.springframework.org/schema/aop 
        http://www.springframework.org/schema/aop/spring-aop-4.2.xsd 
        http://www.springframework.org/schema/tx 
        http://www.springframework.org/schema/tx/spring-tx-4.2.xsd
        http://www.springframework.org/schema/task
           http://www.springframework.org/schema/task/spring-task-4.2.xsd
        http://code.alibabatech.com/schema/dubbo        
        http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
        
        
        <!-- 配置  扫描   @Service -->
        <context:component-scan base-package="com.educloud.service"/>
        
        <!-- 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 -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <!-- 传播行为 -->
            <tx:method name="save*" propagation="REQUIRED" rollback-for="MyException"/>
            <tx:method name="insert*" propagation="REQUIRED" rollback-for="MyException"/>
            <tx:method name="add*" propagation="REQUIRED" rollback-for="MyException"/>
            <tx:method name="create*" propagation="REQUIRED" rollback-for="MyException"/>
            <tx:method name="delete*" propagation="REQUIRED" rollback-for="MyException"/>
            <tx:method name="update*" propagation="REQUIRED" rollback-for="MyException"/>
            <tx:method name="find*" propagation="SUPPORTS" read-only="true" />
            <tx:method name="select*" propagation="SUPPORTS" read-only="true" />
            <tx:method name="get*" propagation="SUPPORTS" read-only="true" />
        </tx:attributes>
    </tx:advice>
    <!-- 切面 -->
    <aop:config>
        <aop:advisor advice-ref="txAdvice"
            pointcut="execution(* com.educloud.service.impl.*.*(..))" />
    </aop:config>
        
        
</beans>

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