AJAX的引入之传统请求带来的问题------计算机网络经典

比眉伴天荒 2024-02-20 10:01 50阅读 0赞

>     <!DOCTYPE html>
>     <html lang="en">
>     <head>
>         <meta charset="UTF-8">
>         <title>Title</title>
>     </head>
>     <body>
>         <h3><a href="/OA/old/request">跳转页面</a></h3>
>         <form action="/OA/old/request" method="post">
>             <input type="submit" value="post提交">
>         </form>
>         <input type="button" value="提交script请求" onclick="sendRequest()">
>         <script type="text/javascript">
>             function sendRequest()
>             {
>                 // window.location.href="/OA/old/request"
>                 document.location.href="/OA/old/request"
>             }
>         </script>
>     </body>
>     </html>
> 
>     <!DOCTYPE html>
>     <html lang="en">
>     <head>
>         <meta charset="UTF-8">
>         <title>Title</title>
>     </head>
>     <body>
>         <h3><a href="/OA/old/request">跳转页面</a></h3>
>         <form action="/OA/old/request" method="post">
>             <input type="submit" value="post提交">
>         </form>
>         <input type="button" value="提交script请求" οnclick="sendRequest()">
>         <script type="text/javascript">
>             function sendRequest()
>             {
>                 // window.location.href="/OA/old/request"
>                 document.location.href="/OA/old/request"
>             }
>         </script>
>     </body>
>     </html>

>     package com.bjpowernode.javaweb.servlet;
>     
>     import jakarta.servlet.ServletException;
>     import jakarta.servlet.annotation.WebServlet;
>     import jakarta.servlet.http.HttpServlet;
>     import jakarta.servlet.http.HttpServletRequest;
>     import jakarta.servlet.http.HttpServletResponse;
>     
>     import java.io.IOException;
>     import java.io.PrintWriter;
>     
>     @WebServlet("/old/request")
>     public class oldRequest extends HttpServlet {
>         @Override
>         protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
>             //响应信息到浏览器
>             request.setCharacterEncoding("UTF-8");
>             response.setContentType("text/html;charset=UTF-8");
>             PrintWriter out = response.getWriter();
>             //向浏览器响应信息
>             out.println("<h1>欢迎来到ajax</h1");
>         }
>     
>         @Override
>         protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
>             request.setCharacterEncoding("UTF-8");
>             response.setContentType("text/html;charset=UTF-8");
>             PrintWriter out = response.getWriter();
>             //向浏览器响应信息
>             out.println("<h1>欢迎来到ajax</h1");
>         }
>     }
> 
>     package com.bjpowernode.javaweb.servlet;
>     
>     import jakarta.servlet.ServletException;
>     import jakarta.servlet.annotation.WebServlet;
>     import jakarta.servlet.http.HttpServlet;
>     import jakarta.servlet.http.HttpServletRequest;
>     import jakarta.servlet.http.HttpServletResponse;
>     
>     import java.io.IOException;
>     import java.io.PrintWriter;
>     
>     @WebServlet("/old/request")
>     public class oldRequest extends HttpServlet {
>         @Override
>         protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
>             //响应信息到浏览器
>             request.setCharacterEncoding("UTF-8");
>             response.setContentType("text/html;charset=UTF-8");
>             PrintWriter out = response.getWriter();
>             //向浏览器响应信息
>             out.println("<h1>欢迎来到ajax</h1");
>         }
>     
>         @Override
>         protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
>             request.setCharacterEncoding("UTF-8");
>             response.setContentType("text/html;charset=UTF-8");
>             PrintWriter out = response.getWriter();
>             //向浏览器响应信息
>             out.println("<h1>欢迎来到ajax</h1");
>         }
>     }