Spring mvc注解方式使用事务回滚

项目名：1ma1ma

jdbc.xml

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"

p:driverClassName="${jdbc.driverClassName}"

p:url="${jdbc.url}"

p:username="${jdbc.username}"

p:password="${jdbc.password}"

p:maxActive="${jdbc.pool-size}"

p:minEvictableIdleTimeMillis="600000" p:timeBetweenEvictionRunsMillis="900000"

p:removeAbandoned="true" p:logAbandoned="true" p:removeAbandonedTimeout="120"

p:maxWait="5000"

/>

<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

<property name="dataSource">

<ref local="dataSource" />

</property>

</bean>

<tx:annotation-driven transaction-manager="transactionManager" />

<context:component-scan base-package="com.yaoma.*">

<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />

</context:component-scan>

servlet-context.xml

<context:component-scan base-package="com.yaoma.*" >

<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />

<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service" />

</context:component-scan>

@Transactional

public int delete(String IMGroupID, String userid) throws Exception {

//按照IMGroupID和userid更新对应的Groups表内容

int is_return = Groups_Dao.IsDeleted_Groups(IMGroupID, userid, 0);

if (is_return == 0) {

throw new RuntimeException("is_return is 0;");

}

//去环信上删除对应的数据

String hx_return = HX_Service.delete_group(IMGroupID);

if (hx_return == null) {

throw new RuntimeException("hx_return is null");

}

return Integer.parseInt(hx_return);

}

@Transactional注解标签

因为在运行中，所以使用RuntimeException进行异常抛出，类中不能使用try捕捉异常，直接throws Exception抛出异常

如运行时使用Exception抛出异常，则回滚无效