Session session;
    Transaction tx;
    
    @After
    public void afterTest(){
        tx.commit();
        HibernateUtil.closeSession();
    }
    
    
    
    @Before
    public void initDate(){
        session=HibernateUtil.getSession();
        tx = session.beginTransaction();
    }
    
    
    @Test
    //延迟加载
    public void loadTest(){
        Student stu = (Student)session.load(Student.class, 1);
        System.out.println("ok");
        System.out.println(stu);
    }
    
    @Test
    public void getTest(){
        Student stu = (Student)session.get(Student.class, 1);
        //脏检查
        stu.setName("猪");
    }