Hibernate框架增删改查测试类归为一个类

Posted 2020-08-04 0A1

  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 }