Servlet类写网站访问量 servlet+jsp

java_zhentou · 发表于 2013-2-6 08:41:19

Servlet端写网站访问量：
package com.mison;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.RequestDispatcher;import javax.servlet.ServletContext;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class TestCounter extends HttpServlet {public void init(javax.servlet.ServletConfig config)throws ServletException {System.out.println("访问器初始化开始。。。。。");};public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {ServletContext servletcontext = request.getSession().getServletContext();if (null == servletcontext.getAttribute("Counter")) {servletcontext.setAttribute("Counter", 1);} else {int counter = (Integer) servletcontext.getAttribute("Counter");servletcontext.setAttribute("Counter", counter + 1);}    RequestDispatcher pd=       request.getRequestDispatcher("TestCounter.jsp");             pd.forward(request, response);}}

JSP页面写显示访问量

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head> <base href="<%=basePath%>">       <title>My JSP 'TestCounter.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page">  </head> <body>    已有<%=application.getAttribute("Counter") %>访问过此页面  </body></html>

用多种浏览器验证  只要服务器不重启

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