beans.xml中的问题

<!-- 事务切面 -->

<bean id="tx" class="org.springframework.transaction.interceptor.TransactionInterceptor"> 

<property name="transactionManager" ref="tm"></property>



<property name="transactionAttributes">

<props>

<prop key="reg">PROPAGATION_REQUIRED</prop>

<prop key="task_*">PROPAGATION_REQUIRED</prop>

<prop key="*">PROPAGATION_REQUIRED</prop>

</props>

</property>

</bean>

加上红色部分语句就ok了！