Hibernate增删改查

一，建立sessionFactory

package test;

import org.hibernate.HibernateException;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;


public class HibernateUtil {
private static Configuration cfg;
private static SessionFactory sf;

static
{
try {
cfg = new Configuration().configure();
sf = cfg.buildSessionFactory();
} catch (HibernateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static SessionFactory getSessionFactory(){
return sf;
}

}

二，test类

package test;


import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.junit.Test;
import test.HibernateUtil;
import demo.User;


public class UserTest {
public void testQueryUserById(){
// TODO Auto-generated method stub
SessionFactory sf = null;
Session session = null;
Transaction ts = null;



try {
  sf = HibernateUtil.getSessionFactory();
session = sf.getCurrentSession();
ts = session.beginTransaction();




ts.commit();
} catch (HibernateException e) {
// TODO Auto-generated catch block
if(ts != null)
{
ts.rollback();
}
e.printStackTrace();
}
}
@Test
//保存
public void SaveUser(){
// TODO Auto-generated method stub
SessionFactory sf = null;
Session session = null;
Transaction ts = null;


try {
  sf = HibernateUtil.getSessionFactory();
session = sf.getCurrentSession();
ts = session.beginTransaction();


User user = new User();
user.setAge(20);
user.setUsername("隔壁老王");
user.setGender("男");
user.setPassword("111111");
session.save(user);

ts.commit();
} catch (HibernateException e) {
// TODO Auto-generated catch block
if(ts != null)
{
ts.rollback();
}
e.printStackTrace();
}
}
@Test
//获取
public void getUser(){
// TODO Auto-generated method stub
SessionFactory sf = null;
Session session = null;
Transaction ts = null;

try {
  sf = HibernateUtil.getSessionFactory();
session = sf.getCurrentSession();
ts = session.beginTransaction();
User user =session.get(User.class, 2);
System.out.println(user.getUsername());

ts.commit();
} catch (HibernateException e) {
// TODO Auto-generated catch block
if(ts != null)
{
ts.rollback();
}
e.printStackTrace();
}
}

@Test
//更新
public void updateUser(){
// TODO Auto-generated method stub
SessionFactory sf = null;
Session session = null;
Transaction ts = null;

try {
  sf = HibernateUtil.getSessionFactory();
session = sf.getCurrentSession();
ts = session.beginTransaction();
User user1=session.get(User.class, 2);
user1.setPassword("222222");
ts.commit();
} catch (HibernateException e) {
// TODO Auto-generated catch block
if(ts != null)
{
ts.rollback();
}
e.printStackTrace();
}
}
@Test
//删除
public void delUser(){
// TODO Auto-generated method stub
SessionFactory sf = null;
Session session = null;
Transaction ts = null;
   User user =new User();
   user.setUsername("隔壁老李");
   user.setAge(15);
   user.setGender("女");
   user.setPassword("123456");
try {
  sf = HibernateUtil.getSessionFactory();
session = sf.getCurrentSession();
ts = session.beginTransaction();
session.delete(user);
System.out.println("成功删除");
ts.commit();
} catch (HibernateException e) {
// TODO Auto-generated catch block
if(ts != null)
{
ts.rollback();
}
e.printStackTrace();
}
}

}

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结束