hibernateutil.java

购物车系统

package com.estore.util;

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

public class HibernateUtil
{
	 private static SessionFactory sf;
	  static{

		try {
			sf = new Configuration()
				           .configure()
				           .buildSessionFactory();
		} catch (HibernateException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	  }
	  public static Session getSession(){
		Session s = null;
		if(sf!=null && !sf.isClosed()){
				s = sf.openSession();
		}
		return s;
	  }
	  
	  public static void releaseSession(Session s){
		  if(s!=null && s.isOpen()) s.close();
	  }
	  
	  public static void clearSessionFactory(){
		  if(sf!=null && !sf.isClosed()) sf.close();
	  }
	  
}