servlet服务器端验证
编程:编写服务器端验证的程序
要求:(1)编写表单界面如下图:
(2)编写servlet程序对用户所输入的内容进行验证,要求用户名不能为空,密码与确认密码不能为空且长度在4-10之间,密码与确认密码相同。如果用户输入的条件符合要求,则请求转发到success.jsp,否则请求转发到error.jsp
(3)success.jsp用于输出用户所输入的用户名及密码。
(4)error.jsp用于输出用户输入时出错的信息。
├─.myeclipse
├─.settings
├─src
│ └─com
│ └─mars
└─WebRoot
├─META-INF
└─WEB-INF
├─classes
│ └─com
│ └─mars
└─lib
登录login.jsp
[html]
<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<%
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%>">
<title>login</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">
-->
</head>
<body>
<center>
<h1>
服务器端验证的程序
</h1>
<form action="login" method="get">
<table border="1">
<tr>
<td>
用 户 名:
</td>
<td>
<input type="text" name="username">
</td>
</tr>
<tr>
<td>
密 码:
</td>
<td>
<input type="password" name="password1">
</td>
</tr>
<tr>
<td>
确认密码:
</td>
<td>
<input type="password" name="password2">
</td>
</tr>
<tr>
<td colspan="2">
补充:Web开发 , Jsp ,