spring的通用事务管理机制
<tx:advice id="serviceAdvice"><tx:attributes><tx:method name="get*" read-only="true"/><tx:method name="*" rollback-for="java.lang.Exception"/></tx:attributes></tx:advice><aop:config><aop:pointcut id="servicePointcut" expression="execution(* cn.iwoo.service.*.*(..))"/><aop:advisor pointcut-ref="servicePointcut" advice-ref="serviceAdvice"/></aop:config>
