1 package cn.happy.test;
2
3
4 import org.hibernate.Session;
5 import org.hibernate.SessionFactory;
6 import org.hibernate.Transaction;
7 import org.hibernate.cfg.Configuration;
8 import org.junit.After;
9 import org.junit.Before;
10 import org.junit.Test;
11
12 import cn.happy.entity.Student;
13 import cn.happy.util.HibernateUtil;
14
15 public class H_01Test {
16 Session session;
17 Transaction tx;
18 public static void main(String[] args) {
19 Class clazz=Student.class;
20 System.out.println(clazz);
21 }
22
23 @After
24 public void afterTest(){
25 tx.commit();
26 HibernateUtil.closeSession();
27 }
28
29 @Before
30 public void initData(){
31 session = HibernateUtil.getSession();
32 tx= session.beginTransaction();
33 }
34
35 /**
36 * 1.3 用get方法查询
37 */
38 @Test
39 public void getTest(){
40 Student stu=(Student)session.get(Student.class, 3);
41 System.out.println(stu);
42
43 }
44
45
46 /**
47 * 1.2 修改学生
48 */
49 @Test
50 public void updateTest(){
51 Session session = HibernateUtil.getSession();
52
53 //不被上下文跟踪对象
54 /*Student stu=new Student();
55 stu.setId(3);
56 stu.setName("微冷的雨训练营");*/
57
58 //方式二：如何用呗上下文跟踪的方式
59 //检索出一条记录，一个实体对象
60 Student stu= (Student)session.load(Student.class,3);
61 stu.setName("金龙加油！！！！");
62
63 Transaction tx = session.beginTransaction();
64 session.update(stu);
65 tx.commit();
66 HibernateUtil.closeSession();
67 System.out.println("update ok!");
68 }
69
70
71 /**
72 * 1.1 删除学生
73 */
74 @Test
75 public void delTest(){
76
77 Student stu=new Student();
78 stu.setId(2);
79 session.delete(stu);
80
81 System.out.println("del ok!");
82 }
83
84
85 /**
86 * 1.0 添加学生
87 */
88 @Test
89 public void testAdd(){
90 //1.1构建一个学生对象
91 Student stu=new Student();
92 stu.setAge(18);
93 stu.setName("2016年8月28日09:21:09训练营");
94 stu.setId(3);
95
96 //1.2 找到和数据库的接口 xxx========session--->sessionFactory--->configure.buildSessionFactory()
97 //咱们要想打通和db通道
98 Configuration cf=new Configuration().configure("hibernate.cfg.xml");
99 SessionFactory factory = cf.buildSessionFactory();
100 Session session = factory.openSession();
101 Transaction tx = session.beginTransaction();
102
103 //1.3保存
104 session.save(stu);
105 tx.commit();
106 session.close();
107 }
108
109 }
