定时刷新网页(小程序)

最新推荐文章于 2023-10-11 20:54:24 发布

原创最新推荐文章于 2023-10-11 20:54:24 发布 · 1.7k 阅读

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该博客介绍了一个JavaWeb小程序，使用Servlet实现定时刷新网页功能。通过`doGet`方法设置响应头`Refresh`，每隔2秒将页面重定向到指定URL `/chuanzhijavaweb1/1.html`，并输出随机数。此代码适用于需要周期性更新内容的场景。

package com.javaweb.yanzhengma;
//定时刷新网页
import java.io.IOException;
import java.util.Random;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
* Servlet implementation class ServletDingshiRefresh
*/
@WebServlet("/servletDingshiRefresh")
public class ServletDingshiRefresh extends HttpServlet {
private static final long serialVersionUID = 1L;

/**
* @see HttpServlet#HttpServlet()
*/
public ServletDingshiRefresh() {
super();
// TODO Auto-generated constructor stub
}

/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//每隔2秒刷新自己
// response.setHeader("Refresh", "2");
// response.getWriter().write("aa"+new Random().nextInt());
//每隔2秒刷新自己到其他资源(时间可以自己设定)
response.setHeader("Refresh", "2;url=/chuanzhijavaweb1/1.html");
response.getWriter().write("aa"+new Random().nextInt());

}

/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}

}