事务传播的注意事项
<tx:advice id="transactionAdvice" transaction-manager="transactionManager"><tx:attributes><tx:method name="query*" propagation="NOT_SUPPORTED" read-only="true"/><tx:method name="find*" propagation="NOT_SUPPORTED" read-only="true"/><tx:method name="*" propagation="REQUIRED"/></tx:attributes></tx:advice>
