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[JSP] JSP之表单提交get和post的区别详解及实例

开发技术 开发技术 发布于:2021-10-20 14:34 | 阅读数:481 | 评论:0

JSP之表单提交get和post的详解及实例
一 get和post的区别

DSC0000.png

二 实战(post方式提交)

1、login.jsp
<%@ page language="java" import="java.util.*" contentType="text/html; charset=utf-8" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
 <head>
  <base href="<%=basePath%>" rel="external nofollow" rel="external nofollow" >
  
  <title>My JSP 'login.jsp' starting page</title>
  
  <meta http-equiv="pragma" content="no-cache">
  <meta http-equiv="cache-control" content="no-cache">
  <meta http-equiv="expires" content="0">  
  <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
  <meta http-equiv="description" content="This is my page">
  <!--
  <link rel="stylesheet" type="text/css" href="styles.css" rel="external nofollow" rel="external nofollow" >
  -->
 
 </head>
 
 <body>
  <h1>用户登录</h1>
  <hr>
  <form action="dologin.jsp" name="loginForm" method="post">
   <table>
  <tr>
   <td>用户名:</td>
   <td><input type="text" name="username"/></td>
  </tr>
  <tr>
   <td>密码:</td>
   <td><input type="password" name="password"/></td>
  </tr>
  <tr>
   <td colspan="2"><input type="submit" value="登录"></td>
  </tr>
   </table>
  </form>
 </body>
</html>
2、dologin.jsp
<%@ page language="java" import="java.util.*" contentType="text/html; charset=utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
 <head>
  <base href="<%=basePath%>" rel="external nofollow" rel="external nofollow" >
  
  <title>My JSP 'dologin.jsp' starting page</title>
  
  <meta http-equiv="pragma" content="no-cache">
  <meta http-equiv="cache-control" content="no-cache">
  <meta http-equiv="expires" content="0">  
  <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
  <meta http-equiv="description" content="This is my page">
  <!--
  <link rel="stylesheet" type="text/css" href="styles.css" rel="external nofollow" rel="external nofollow" >
  -->
 
 </head>
 
 <body>
  <h1>登录成功</h1>
  <hr>
 </body>
</html>
三 运行结果
DSC0001.png

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