📄 login.jsp
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<%@ page language="java" import="java.util.*" contentType="text/html;charset=UTF-8" pageEncoding="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%>">
<title>登录界面</title>
<!--
一下是javaScript代码，验证用户是否写入了用户名和密码
-->
<script type="text/javascript">
<!--
function validateLogin(){
var strUserName=document.frmLogin.txtUserName.value;
var strPassWord=document.frmLogin.txtPassword.value;
if(strUserName==""){
alert("请您输入用户名！");
return false;
}
if(strPassW==""){
alert("请输入密码");
return false;
}
}
-->
</script>
<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>
<!--
用validateLogin()来验证是否输入了用户名和密码
-->
<form method="post" action="servlet/ServletLogin" name="frmLogin"
onSubmit="javaScript:return validateLogin();">
<table width="200" border="1" align="center" bgColor="#cccccc" border="0" cellpadding="0" cellSpacing="0" width="273">
<% if (request.getAttribute("error") != null) { %>
<tr>
<td colspan=2 align=center><strong> <font color ="red"><%= request.getAttribute("error")%></font>
</strong>
</td>
</tr>
<%} %>
<tr>
<td align="right" height="47" vAlign="bottom" width="94">用户名：</td>
<td height="47" vAlign="bottom" width="172">
<input name="txtUserName" type="text" /></td>
</tr>
<tr>
<td align="right" width="94">密码：</td>
<td width="172"><input name="txtPassWord" type="password" value/></td></tr>
<tr>
<td align="right" height="44" width="94"></td>
<td height="44" width="172"><input name="url" type="hidden" value="<%= request.getParameter("url")%>" />
<input name="submit" type="submit" value="提交" />
<input name="reset" type="reset" value="重置" /></td>
</tr>
</table>
</form>
</body>
</html>
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