使用$.post方式来实现页面的局部刷新功能

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="js/jquery-3.3.1.min.js"></script>
    <script>
        function fun() {
           $.post("ajaxServlet",{username:"light",age:15},function (data) {
               alert(data);
           },"text");
        }
        
    </script>
</head>
<body>
      <input type="button" value="发送异步请求" onclick="fun();">
      <input type="text">
</body>
</html>

package cn.hopetesting.com;

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;

/**
 * @author newcityman
 * @date 2019/9/16 - 21:53
 */
@WebServlet("/ajaxServlet")
public class AjaxServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String username = request.getParameter("username");
       /* try {
            Thread.sleep(5000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }*/
        System.out.println(username);
        response.getWriter().write("hello,"+username+".");
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doPost(request, response);
    }
}

原文地址：https://www.cnblogs.com/newcityboy/p/11530977.html