hibernate 抽取工具类

hibernate 抽取工具类

编写工具类

package com.xmetc.hibernate.zyz;

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


public class HibernateUtils {

	
	private static final Configuration cf;
	private static final SessionFactory sf;
	
	static {
		cf=new Configuration().configure();
		sf=cf.buildSessionFactory();
	}
	
	public static Session openSession() {
		return sf.openSession();
	}
}

提取前

@Test
	public void demo1()   {
		//1.加载hibernate核心配置文件
		Configuration configuration = new Configuration().configure();
		
		//2.创建一个sessionFactory对象,类似于jdbc中的连接池
		SessionFactory sessionFactory = configuration.buildSessionFactory();
				
		//3.通过sessionFactory获取到session对象:类似于jdbc中的connect
		Session session = sessionFactory.openSession();
	
		//4.手动开启事务
		Transaction transaction = session.beginTransaction();
		
		//5.编写代码
		MUser user = new MUser();
		user.setUsername("张w11三");
		user.setPassword("99999");
		session.save(user);
		
		
		//6.事务提交
		transaction.commit();
		//7.资源释放
		session.close();
		sessionFactory.close();
				
	}

提取后

@Test
	public void add2() {
		Session session= HibernateUtils.openSession();
		Transaction transaction = session.beginTransaction();
		
				MUser user = new MUser();
				user.setUsername("张w三");
				user.setPassword("88888888888");
				session.save(user);
		
		transaction.commit();
		session.close();
			
		
	}