为什么我的用户信息界面不能获取用户名和密码，User的代码如下：
<%@ 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%>">
<title>My JSP 'users.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">
-->
</head>
<body>
<h1>用户信息</h1>
<hr>
<%
String username="";
String password="";
Cookie[] cookies=request.getCookies();
if(cookies!=null&&cookies.length>0)
{
for(Cookie c:cookies)
{
if(c.getName().equals("username"))
{
username=c.getValue();
}
if(c.getName().equals("password"))
{
password=c.getValue();
}
}
}
%>
<BR>
<BR>
<BR>
用户名：<%=username %><br>
密码：<%=password %><br>
</body>
</html>
应该没错误，可能是你的其他页面的有错了啊！