JPA 保存失败

save失败 但是不报错！顺便问下 在action中怎么注入servicepublic ModelAndView save(HttpServletRequest request,
            HttpServletResponse response)throws Exception{
//menuSer.queryS();
smenuService = (MenuService) getWebApplicationContext().getBean("menuService"); 
    smenuService.save();
        return new ModelAndView("menu_jsp/menu");
   }public void save() {
// TODO Auto-generated method stub
smenuDao.save();
}
public void save() {
// TODO Auto-generated method stub
Menu m1 = new Menu();
Menu m2 = new Menu();
Menu m3 = new Menu();
Menu m4 = new Menu();
m1.setName("百度");m1.setUrl("http://www.baidu.com");
m2.setName("搜狐");m2.setUrl("http://www.souhu.com");
m3.setName("人人");m3.setUrl("http://www.renren.com");
m4.setName("谷歌");m4.setUrl("http://www.google.com");
//EntityManagerFactory emf = Persistence.createEntityManagerFactory("jpa_test");   
//System.out.println(emf.createEntityManager().getTransaction().notify().....isActive()==true);
//emf.createEntityManager().getTransaction().begin();
this.getJpaTemplate().persist(m1);
this.getJpaTemplate().persist(m2);
this.getJpaTemplate().persist(m3);
this.getJpaTemplate().persist(m4);
//emf.createEntityManager().getTransaction().commit();

}     <bean id="transactionInterceptor" class="org.springframework.transaction.interceptor.TransactionInterceptor">  
         <property name="transactionManager">  
             <ref local="transactionManager"/>  
         </property>  
         <property name="transactionAttributes">  
             <props>  
                 <prop key="insert*">PROPAGATION_REQUIRED</prop>  
                 <prop key="update*">PROPAGATION_REQUIRED</prop>  
                 <prop key="save*">PROPAGATION_REQUIRED</prop>  
                 <prop key="add*">PROPAGATION_REQUIRED</prop>  
                 <prop key="update*">PROPAGATION_REQUIRED</prop>  
                 <prop key="remove*">PROPAGATION_REQUIRED</prop>  
                 <prop key="delete*">PROPAGATION_REQUIRED</prop>  
                 <prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>  
                 <prop key="find*">PROPAGATION_REQUIRED,readOnly</prop>  
                 <prop key="load*">PROPAGATION_REQUIRED,readOnly</prop>  
                 <prop key="change*">PROPAGATION_REQUIRED</prop>  
                 <prop key="*">PROPAGATION_REQUIRED,readOnly</prop>  
             </props>  
         </property>  
     </bean>  
       
     <bean id="beanNameAutoProxyCreator"  
         class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">  
         <property name="beanNames">  
             <list>  
                 <value>*DaoImp</value>  
             </list>  
         </property>  
         <property name="interceptorNames">  
             <list>  
                 <value>transactionInterceptor</value>  
             </list>  
         </property>  
     </bean>              
     
       
     <!-- 直接使用Spring的 JpaTemplate -->  
     <bean id="jpaTemplate" class="org.springframework.orm.jpa.JpaTemplate">  
         <property name="entityManagerFactory" ref="entityManagerFactory" />  
     </bean>  
     
     <bean id="menuDao"  class="com.wujw.springMVC.dao.MenuDaoImp">
     </bean>
     <bean id="menuService"  class="com.wujw.springMVC.service.MenuServieImp">
      <property name="smenuDao" ref="menuDao"></property>
     </bean>
     <bean id="menuAction" class="com.wujw.springMVC.action.MenuAction">
      <property name="smenuService" ref="menuService"></property>
     </bean>