Spring 事务回滚有关问题 声明式事务回滚失败

<!-- 指定dataSource配置文件 --><bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">    <property name="locations">        <value>classpath:jdbc_mysql.properties</value>    </property></bean><!-- dataSource (各个属性值由配置文件读取) --><bean id="dataSource" class="${dataSource}">    <property name="driverClassName" value="${driverClassName}" />    <property name="url" value="${url}" />    <property name="username" value="${username}" />    <property name="password" value="${password}" /></bean><!-- sessionFactory --><bean id="sessionFactory"    class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">    <property name="dataSource">        <ref bean="dataSource" />    </property>    <property name="hibernateProperties">        <props>            <prop key="hibernate.dialect">                ${hibernate.dialect}            </prop>        </props>    </property>    <property name="mappingResources">    <!-- 实体类映射文件 -->    </property></bean><!-- Spring 事务配置 --><context:annotation-config /><context:component-scan base-package="com.bluesky" /><bean id="txManager"    class="org.springframework.orm.hibernate3.HibernateTransactionManager">    <property name="sessionFactory" ref="sessionFactory" /></bean><tx:annotation-driven transaction-manager="txManager" /><bean id="transactionManager"    class="org.springframework.orm.hibernate3.HibernateTransactionManager">    <property name="sessionFactory" ref="sessionFactory" /></bean><tx:advice id="txAdvice" transaction-manager="transactionManager">    <tx:attributes>        <tx:method name="*" propagation="REQUIRED" />    </tx:attributes></tx:advice><aop:config>    <aop:pointcut id="interceptorPointCuts"        expression="execution(* com.epo.biz.impl.*.*(..))" />    <aop:advisor advice-ref="txAdvice" pointcut-ref="interceptorPointCuts" /></aop:config><!-- Dao配置略 --><!-- BaseDao继承自org.springframework.orm.hibernate3.support.HibernateDaoSupport --><bean id="baseDao" class="com.epo.dao.base.BaseDao">    <property name="sessionFactory" ref="sessionFactory" /></bean><bean id="orderDao" class="com.epo.dao.impl.OrderDaoImpl" parent="baseDao" /><bean id="orderDetailDao" class="com.epo.dao.impl.OrderDetailDaoImpl" parent="baseDao" /><bean id="orderCodeDao" class="com.epo.dao.impl.OrderCodeDaoImpl" parent="baseDao" /><!-- orderBiz 注入 --><bean id="orderBiz" class="com.epo.biz.impl.OrderBizImpl">    <constructor-arg ref="orderDao" />    <constructor-arg ref="orderDetailDao" />    <constructor-arg ref="orderCodeDao" /></bean>

package com.epo.biz.impl;import .......public class OrderBizImpl implements OrderBiz {    private OrderDao orderDao;        private OrderDetailDao orderDetailDao;        private orderCodeDao orderCodeDao;        public OrderBizImpl(OrderDao orderDao, OrderDetailDao orderDetailDao            , orderCodeDao orderCodeDao) {        this.orderDao = orderDao;        this.orderDetailDao = orderDetailDao;        this.orderCodeDao = orderCodeDao;    }    // OrderBizImpl    public addOrder(Order order, List<Details> details) {        try {            this.orderDao.add(order);            this.orderDetailDao.add(details);            this.orderCodeDao.update(order.getOrderCode()); // 这行代码出错，以上两个插入成功        } catch (Exception e) {            System.out.println(e);        }    }    }