Javaweb-servlet-实现统计网站被访问次数的功能

最新推荐文章于 2024-07-07 03:52:35 发布

三木一立

最新推荐文章于 2024-07-07 03:52:35 发布

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分类专栏： Java

本文链接：https://blog.youkuaiyun.com/qq_45860901/article/details/125400456

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Servlet 访问统计 ServletContext HTTP请求计数器

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package com.qust.stumis.controller;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;

@WebServlet("/Servlet1")
public class Servlet1 extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        ServletContext context = req.getServletContext();
        Integer time = (Integer) context.getAttribute("times");
        if(time == null){
            time = new Integer(1);

        }else{
            time = new Integer(time.intValue() + 1);
        }
        resp.setContentType("text/html;charset=utf-8");
        PrintWriter out = resp.getWriter();
        out.println("<html><head><title>");
        out.println("页面访问统计");
        out.println("</title></head><body>");
        out.println("当前页面被访问了");
        out.println("<font color=red size=20>"+time+"</font>次");

        //设置属性,将times保存到当前的上下文中
        context.setAttribute("times", time);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        this.doGet(req,resp);
    }
}

结果如下：
在这里插入图片描述