<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>登录页</title>
<script type="text/javascript">
function check()
{
var userid = document.getElementById("userid");
if (userid.value == "")
{
alert("用户代码不可为空！");
return false;
}
if(uform.password.value == "")
{
alert("密码不能为空");
return false;
}
return true;
}
</script>
</head>
<body>
<form id="uform" action="yanzheng.jsp" method="post" onSubmit="return check();">
用户代码：<input id="userid" type="text" name="userid" width=30 />
密码：<input id="password" type="password" name="password" width=30 />
<input type="submit" value="登录" />
<a href="zhuce.jsp" >注册新用户</a>
</form>
</body>
</html>
登录页
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="java.util.*" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>消息页面</title>
</head>
<body>
<%
String strMsgID = request.getParameter("msgid");
if (strMsgID == null || strMsgID.trim().length() == 0)
{
out.print("请正确传递信息");
}
else
{
int iMsgid = Integer.parseInt(strMsgID);
switch (iMsgid)
{
case 1:
out.print("请正确输入用户代码");
break;
case 2:
out.print("请正确输入密码");
break;
case 3:
out.print("密码输入错误");
break;
case 4:
out.print("该用户不存在");
break;
case 5:
out.print("请正确输入用户名称");
break;
case 6:
out.print("提交成功");
break;
case 7:
out.print("用户代码已存在");
break;
default:
out.print("传递的msgid不认识");
break;
}
}
response.setHeader("refresh", "3;URL=login.jsp");
%>
</body>
</html>
消息页面
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>登录验证页</title>
</head>
<body>
<%
String strUserid = request.getParameter("userid");
String strPW = request.getParameter("password");
if (strUserid == null || strUserid.trim().length() == 0)
{
response.sendRedirect("message.jsp?msgid=1");
}
else if (strPW == null || strPW.trim().length() == 0)
{
response.sendRedirect("message.jsp?msgid=2");
}
else
{
//查找用户信息
Object obj = application.getAttribute(strUserid);
if (obj != null)
{
String strUser = obj.toString();
String[] user = strUser.split("#");
String strUID = user[0];
String strUsername = user[1];
String strP = user[2];
if(strPW.equals(strP))
{
out.print("欢迎 " + strUsername + " 登录系统");
}
else
{
response.sendRedirect("message.jsp?msgid=3");
}
}
else
{
response.sendRedirect("message.jsp?msgid=4");
}
}
%>
</body>
</html>
登录验证页
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>保存用户信息</title>
</head>
<body>
<%
String strUserid = request.getParameter("userid");
String strUsername = request.getParameter("username");
String strPW = request.getParameter("password");
if (strUserid == null || strUserid.trim().length() == 0)
{
response.sendRedirect("message.jsp?msgid=1");
}
else if (strUsername == null || strUsername.trim().length() == 0)
{
response.sendRedirect("message.jsp?msgid=5");
}
else if (strPW == null || strPW.trim().length() == 0)
{
response.sendRedirect("message.jsp?msgid=2");
}
else
{
//查找用户信息
Object obj = application.getAttribute(strUserid);
if (obj != null)
{
response.sendRedirect("message.jsp?msgid=7");
}
else
{
strUsername = new String(strUsername.getBytes("ISO-8859-1"),"UTF-8");
String strUser = strUserid + "#" + strUsername + "#" + strPW;
application.setAttribute(strUserid, strUser);
response.sendRedirect("message.jsp?msgid=6");
}
}
%>
</body>
</html>
保存用户信息
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>用户注册</title>
<script type="text/javascript">
function yanz()
{
if (zhugan.userid.value == "")
{
alert("用户代码不能为空！");
return false;
}
if(zhugan.username.value == "")
{
alert("用户名称不能为空！");
return false;
}
if(zhugan.password.value == "")
{
alert("登陆密码不能为空！");
return false;
}
if(zhugan.passwore.value == "")
{
alert("确认密码不能为空！");
return false;
}
if(zhugan.password.value != zhugan.passwore.value)
{
alert("登陆密码与确认密码不相同！");
return false;
}
return true;
}
</script>
</head>
<body>
<form id="zhugan" action="saveUser.jsp" method="post" onSubmit="return yanz();">
用户代码：<input id="userid" type="text" name="userid" width=30 />
<br><br>
用户名称：<input id="username" type="text" name="username" width=30 />
<br><br>
登录密码：<input id="password" type="password" name="password" width=30 />
<br><br>
确认密码：<input id="passwore" type="password" name="pueren" width=30 />
<br><br>
<input type="submit" value="提交" />
</form>
</body>
</html>
用户注册
时间： 2024-12-27 17:57:00