public void testMysql() {
		Configuration config = new Configuration().configure();
	      //ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().applySettings(config.getProperties()).build();
		SessionFactory sessionFactory = config.buildSessionFactory();
		Session session =sessionFactory.getCurrentSession();
		Transaction transaction = session.beginTransaction();
		
		Users u = new Users("啊啊啊","123456",3);
		session.save(u);
		
		transaction.commit();
		sessionFactory.close();
	}

注释掉就可以增删改查了  添加ServiceRegistry之后mysql就没反应了呢  why？