关于事务回滚

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<li class="alt"><bean id="txProxyTemplate" abstract="true"  <li class="">        class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">  <li class="alt">        <property name="transactionManager" ref="transactionManager"/>  <li class="">        <property name="transactionAttributes">  <li class="alt">            <props>  <li class="">                <prop key="set*">PROPAGATION_REQUIRED</prop>  <li class="alt">                <prop key="save*">PROPAGATION_REQUIRED</prop>  <li class="">                <prop key="update*">PROPAGATION_REQUIRED</prop>  <li class="alt">                <prop key="remove*">PROPAGATION_REQUIRED</prop>  <li class="">                <prop key="*">PROPAGATION_REQUIRED,readOnly</prop>  <li class="alt">            </props>  <li class="">        </property>  <li class="alt">    </bean>  <li class="">       <li class="alt">       <li class="">     <bean id="departmentLibManager" parent="txProxyTemplate">  <li class="alt">        <property name="target">  <li class="">            <bean class="com.ideal.iim.service.impl.DepartmentLibManagerImpl">  <li class="alt">                <property name="departmentLibDAO" ref="departmentLibDAO"/>  <li class="">                <property name="groupHandler" ref="groupHandler"/>  <li class="alt">                <property name="sessionFactory" ref="sessionFactory"/>  <li class="">            </bean>  <li class="alt">        </property>  <li class="">        <!-- Override default transaction attributes b/c of LoginCookie methods -->  <li class="alt">           <li class="">              <li class="alt">    </bean>