Servlet实现自动刷新功能

Posted 2020-07-30

使用Servlet实现自动刷新功能，每一秒钟在浏览器输出一个随机数字。

package chensi.com;

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 Servlet实现自动刷新 功能(每秒钟在页面 输出一个数字)
 */
@WebServlet("/ResponseDemo9")
public class ResponseDemo9 extends HttpServlet {
    private static final long serialVersionUID = 1L;
       
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //设置一下自动刷新 功能
        response.setIntHeader("refresh", 1);  //这个是设置1秒自动刷新


        Random r = new Random();
        System.out.println(r.nextInt(10)+1);
        response.getWriter().write(r.nextInt(10)+1+"");
    }
    
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        doGet(request, response);
    }

}