HibernateUtil辅助类

package org.kevin.hibernate.util;

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

public class HibernateUtil {
	private static final SessionFactory sessionFactory;
	static{
		try {
			sessionFactory = new Configuration().configure().buildSessionFactory();
		} catch (Throwable ex) {
			System.out.println("初始化SessionFactory失败"+ex);
			throw new ExceptionInInitializerError(ex);
		}
	}
	
	public static final ThreadLocal session = new ThreadLocal();
	public static Session getCurrentSession() throws HibernateException{
		Session s = (Session)session.get();
		if(s == null || !s.isOpen()){
			s=sessionFactory.openSession();
			session.set(s);
		}
		return s;
	}
	
	public static void closeSession() throws HibernateException{
		Session s = (Session)session.get();
		session.set(null);
		if(s!=null)
			s.close();
	}
	
}

使用：

public class TestStudent {
	@Test
	public void testStudent(){
		Student s = new Student();			 				
		s.setName("北京");
		s.setDescription("改进的Hibernate工厂类");
		
		Session session = HibernateUtil.getCurrentSession();
		Transaction tx = session.beginTransaction();
		session.save(s);
		tx.commit();
		HibernateUtil.closeSession();
		
		
	}
}

http://www.docin.com/p-234927721.html

http://lavasoft.blog.51cto.com/62575/39279

http://g.51cto.com/michael