springmvc+hibernate整合事务不回滚

最近心血来潮研究下了springmvc,发现比struts2好用多了，配置也方便，捣鼓了一阵，最后想把hibernate也整进去，结果悲剧就来了，事务就是不回滚，实在没招了，哪位大侠给看下上代码 

springmvc-servlet.xml 

     package="com.springmvc" use-default-filters="false">
         "annotation" expression="org.springframework.stereotype.Controller"/>
         "annotation" expression="org.springframework.stereotype.Service" />



         class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
         "mediaTypes">

                 "html" value="text/html" />
                 "json" value="application/json" />


         "viewResolvers">

                 class="org.springframework.web.servlet.view.BeanNameViewResolver" />

                     class="org.springframework.web.servlet.view.InternalResourceViewResolver">
                     "prefix" value="/WEB-INF/views/" />
                     "suffix" value=".jsp" />



         "defaultViews">


                     class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" />

applicationContext-db.xml 

     package="com.springmvc" />


     "mappings" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
         "locations" value="classpath:dataSources.properties">


     "dataSource" class="org.apache.commons.dbcp.BasicDataSource">
         "driverClassName" value="${driverClassName}" />

         "url" value="${url}" />
         "username" value="${username}" />
         "password" value="${password}" />
         "maxActive" value="${maxActive}" />
         "maxIdle" value="${maxIdle}" />
         "maxWait" value="${maxWait}" />
         "defaultAutoCommit" value="${defaultAutoCommit}" />



     "sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
         "dataSource" ref="dataSource"/>

         "packagesToScan" value="com.springmvc.domain"/>
         "hibernateProperties">

                 "hibernate.dialect">${hibernate.dialect}
                 "hibernate.show_sql">true
                 "hibernate.hbm2ddl.auto">none
                 "hibernate.search.default.directory_provider">org.hibernate.search.store.FSDirectoryProvider
                 "hibernate.search.default.transaction.merge_factor">100
                 "hibernate.search.default.transaction.max_buffered_docs">100
                 "hibernate.search.autoregister_listeners">true
                 "hibernate.search.indexing_strategy">manual




     "transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
         "sessionFactory" ref="sessionFactory"/>


     "jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
         "dataSource" ref="dataSource"/>


     "transactionManager" proxy-target-class="true"/>

applicationContext-aop.xml

 "txAdvice" transaction-manager="transactionManager">

             "update*" propagation="REQUIRED"/>
             "save*" propagation="REQUIRED"/>
             "add*" propagation="REQUIRED"/>
             "create*" propagation="REQUIRED"/>
             "do*" propagation="REQUIRED"/>
             "del*" propagation="REQUIRED"/>
             "remove*" propagation="REQUIRED"/>
             "get*" read-only="true" />
             "query*" read-only="true" />
             "find*" read-only="true" />
             "*"/>



     class="true">
         "execution(public * com.springmvc.service.impl.*ServiceImpl.*(..))" id="allServiceMethod"/>
         "allServiceMethod"   advice-ref="txAdvice" />

UserServiceImpl

 Service(value = "userService")
 @Transactional(rollbackFor=Exception.class)
 public class UserServiceImpl implements UserService {

     @Autowired
     private UserDAO userDAO;

     @Override
     public void addUser(User user) {
         userDAO.addUser(user);
     }

 }

UserDAOImpl 

 @Repository(value = "userDAO")
 public class UserDAOImpl extends HibernateDaoSupport implements UserDAO {

     private Logger logger = Logger.getLogger(getClass());

     @Override
     public void addUser(User user) {
         logger.debug("新增用户");
         this.getHibernateTemplate().save(user);
     }

UserServiceTest

 @RunWith(SpringJUnit4ClassRunner.class)
 @ContextConfiguration(locations={"file:webroot/WEB-INF/springmvc-servlet.xml","classpath:applicationContext-*.xml"})
 public class UserServiceTest{

     @Autowired
     private UserService userService;

     @Test
     public void testAddUser() {

         User user1 = new User();
         user1.setCode("A002");
         user1.setName("haha");
         userService.addUser(user1);

         User user2 = new User();
         user2.setCode("A001");
         user2.setName("haha");
         userService.addUser(user2);

         User user3 = new User();
         user3.setCode("A001");//code是唯一的,这里报唯一约束错误，前面两条数据是不是应该插入失败？
         user3.setName("haha");
         userService.addUser(user3);
     }

 }