📄 login.jsp
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<%@page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>登录页面</title>
</head>
<body>
<center>
<table border="0" bgcolor="FFDC75" width="100%" align="center" >
<tr>
<td><h3 align="center">用户登录</h3></td>
</tr>
<c:if test="${not empty requestScope.error}">
<script type="text/javascript">
var msg="${requestScope.error}";
alert(msg);
</script>
<c:remove var="error" scope="request"/>
</c:if>
</table>
<form method="post" action="${pageContext.request.contextPath}/login.do">
<select name="choose">
<option value="0">用户</option>
<option value="1">管理员</option>
</select>
<table border="1" align="center" bordercolor="FFDC75" cellpadding="3" cellspacing="3">
<tr>
<td>用户名：</td>
<td><input type="text" name="user"/></td>
</tr>
<tr>
<td>密码：</td>
<td><input type="password" name="password"/></td>
</tr>
</table>
<input type="reset" value="重置"/>
<input type="submit" value="提交"/>
<a href="${pageContext.request.contextPath}/register.jsp">注册新用户</a>
</form>
</center></body>
</html>
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