springmcv + hibernate4 手动开启事物

 @Component
 public class LoadDataCache {

     @Resource
     private IDao dao;

     @Resource
     private SessionFactory sessionFactory;

     public void init() {
         Session session = sessionFactory.openSession();
         TransactionSynchronizationManager.bindResource(sessionFactory, new SessionHolder(session));

         List list = dao.findAll();
         ..... // 做一些事情
     }
 }