Hibernate4 buildSessionFactory过时解决方案(Annotation也是一样解决）

今天想用Hibernate4时候发现原先的buildSessionFactory已经过时，查了一下文档得到如下解决方案~

public void test() {  
        Configuration cfg = new Configuration();  
        cfg.configure();          
        ServiceRegistry  sr = new ServiceRegistryBuilder().applySettings(cfg.getProperties()).buildServiceRegistry();           
        SessionFactory sf = cfg.buildSessionFactory(sr);  
                  
          
        Session session = sf.openSession();  
        Transaction tx = session.beginTransaction();  
        User user = new User();  
        user.setBirthday(new Date());  
        user.setName("neal");  
          
        session.persist(user);  
        tx.commit();  
        session.close();  
        System.out.println("end");  
    }