sessionlistener.java

项目是实现网络购物功能

package com.tarena.shoppingcart.listener;

import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;
import com.tarena.shoppingcart.model.Cart;
import com.tarena.shoppingcart.util.HibernateUtil;

public class SessionListener implements HttpSessionListener
{

	/*
	 *在session被创建时向其中设置属性cart
	 */
	public void sessionCreated(HttpSessionEvent event) {
		Cart cart = new Cart();
		event.getSession().setAttribute("cart", cart);
	}

	//会话销毁前关闭数据库的session
	public void sessionDestroyed(HttpSessionEvent event) {
		HibernateUtil.closeSession();
	}
}