Spring mvc 整合hibernate 中的事务有关问题

<bean id="txManager"        class="org.springframework.orm.hibernate3.HibernateTransactionManager">        <property name="sessionFactory" ref="sessionFactory" /></bean><tx:annotation-driven transaction-manager="txManager" />

import javax.annotation.Resource;import org.hibernate.SessionFactory;import org.springframework.stereotype.Repository;import org.springframework.transaction.annotation.Propagation;import org.springframework.transaction.annotation.Transactional;@Repository@Transactional(readOnly = true, propagation = Propagation.SUPPORTS)public class BaseDao<T, PK extends Serializable> implements        BaseDaoService<T, PK> {    @Resource    SessionFactory factory;    /**    *保存对象    */    @Override    @Transactional(readOnly = false, propagation = Propagation.SUPPORTS)    public void save(T entity) {        factory.getCurrentSession().persist(entity);//persist方法不能插入数据    }}

@Service@Transactional(readOnly = true, propagation = Propagation.SUPPORTS)public class MyService  {    @Resource    MyDAO myDAO;//继承自dao基类,此处是dao的接口    @Override    @Transactional(readOnly = false, propagation = Propagation.SUPPORTS)    public void save(User entity) {        myDAO.save(entity);    }}

@Controller@RequestMapping(value = "/user")public class UserAction {    @Resource    UserService myService;//service接口            @RequestMapping(value = "/add")    public String user_add(User user) {                myService.save(user);                return "list";    }}

factory.getCurrentSession().persist(entity);// 把persit更改为factory.getCurrentSession().save(entity);