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来源：2-2 创建XMLHttpRequest对象

慕仰7036876

2020-05-29 17:52:05

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
 <script>
        document.getElementById("bthLoad").onclick = function(){
         //创建XMLHttpRequest对象
         var xmlhttp;
         if(window.XMLHttpRequest){
          xmlhttp = new XMLHttpRequest();
         }
         else{
          xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
         }
         console.log(xmlhttp);
        }
 </script> 
 
<body>
   <input id = "btnLoad" type = "button" value = "加载">
   <div id = "divContent"></div>
   
</body>
</html>

package com.imooc.ajax;
import java.io.IOException;
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 ContentServlet
 */
@WebServlet("/Content")
public class ContentServlet extends HttpServlet {
 private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public ContentServlet() {
        super();
        // TODO Auto-generated constructor stub
    }
 /**
  * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
  */
 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
  response.getWriter().println("<b>i'm server content</b>");
 }
}

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