contextlistener.java

一个J2EE 做的 网上图书销售管理系统

package com.briup.web.listener;

import java.util.Map;

import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;

import com.briup.common.BeanFactory;
import com.briup.service.IOrderService;
import com.briup.common.exception.OrderServiceException;

public class ContextListener implements ServletContextListener {

	public void contextDestroyed(ServletContextEvent arg0) {
		// TODO Auto-generated method stub
		ServletContext stx = arg0.getServletContext();
		stx.removeAttribute("books");
	}

	public void contextInitialized(ServletContextEvent arg0) {
		// TODO Auto-generated method stub
		ServletContext stx = arg0.getServletContext();
		IOrderService orderService = 
			(IOrderService)BeanFactory.getBean("orderService");
		try {
			Map books = orderService.listAllBook();
			System.out.println(books);
			stx.setAttribute("books", books);
		} catch (OrderServiceException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

}