📄 index.jsp
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<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>
<%
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>聊天室登陆</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">
-->
<script type="text/javascript" language="javascript">
function error()
{
var str=form1.name.value;
if(str==""){
alert("昵称不能为空");
location.reload();
}
}
</script>
</head>
<body>
<%
Object obj1 =session.getAttribute("isuser");
if(obj1!=null){
String s1= obj1.toString();
if(s1.equals("true")){
out.print("<script>");
out.print("alert('用户名或密码错误')");
out.print("</script>");
session.removeAttribute("isuser");
}
}
%>
<%
Object obj2 = session.getAttribute("reginfo");
if(obj2!=null){
String reginfo = obj2.toString();
if(reginfo.equals("1")){
out.print("<script>");
out.print("alert('注册成功')");
out.print("</script>");
session.removeAttribute("reginfo");
}else{
out.print("<script>");
out.print("alert('注册失败')");
out.print("</script>");
session.removeAttribute("reginfo");
}
}
%>
<center>
<table border=0 cellpadding="2">
<form action="checkUser" method="post" name="form1">
<tr>
<td colspan="2" align="center"><h2>请您登陆</h2></td>
</tr>
<tr>
<td>用户名:</td>
<td><input name="name"></td>
</tr>
<tr>
<td>密码:</td>
<td><input name="pass"></td>
</tr>
<tr>
<td colspan="2" align="center"><br>
<input type="submit" value="进入聊天室" onclick="error()"></td>
</tr>
<%
Object obj=session.getAttribute("bool");
String s="";
if(obj!=null)
{
s=obj.toString();
if(s.equals("false"))
{
out.print("<tr>");
out.print("<td colspan=2 align=center><br><font color=red>");
out.print("已经有人使用相同昵称!");
out.print("<font></td>");
out.print("</tr>");
session.setAttribute("bool","true");
}
}
%>
</form>
</table>
<br><a href="reg.jsp">注册新用户</a>
</body>
</html>
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