hibernateutil.java

Struts＋Hibernate的源码

/*
 * 创建日期 2005-4-10
 *
 * TODO 要更改此生成的文件的模板，请转至
 * 窗口 － 首选项 － Java － 代码样式 － 代码模板
 */
package com.sonic;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import net.sf.hibernate.*;
import net.sf.hibernate.cfg.*;

/**
 * @author Administrator
 *
 * TODO 要更改此生成的类型注释的模板，请转至
 * 窗口 － 首选项 － Java － 代码样式 － 代码模板
 */
public class HibernateUtil {
	
	private static Log log=LogFactory.getLog(HibernateUtil.class);
	
	private static final SessionFactory sessionFactory;
	
	static {
		  try{
		  	sessionFactory=new Configuration().configure().buildSessionFactory();
		  } catch (Throwable ex) {
		    log.error("Initial SessionFactory creation failed.",ex);
		    throw new ExceptionInInitializerError(ex);
		  }
		}
	
	public static final ThreadLocal session=new ThreadLocal();
	
	public static Session Session() throws HibernateException {
		  Session s=(Session)session.get();
		  //Open a new Session, if this Thread has none yet
		  if (s==null) {
		    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();
		  }

}