📄 login.jsp
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<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="error.jsp" %>
<!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=gb2312">
<META HTTP-EQUIV="Pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Cache-Control" CONTENT="no-cache">
<META HTTP-EQUIV="Expires" CONTENT="0">
<link rel="stylesheet" href="register.css" type="text/css">
<title>用户登陆</title>
</head>
<!--以下为javascript部分，判断用户名和密码栏是否为空-->
<script language="javascript">
<!--
function loginsubmit()
{
ID = document.form.ID.value;
password = document.form.password.value;
if(ID==""||ID.length>25){
alert("您的用户忘了填写了或者字符数超过规定长度！");
document.form.ID.focus();
}
else if(password==""||password>20||password<6){
alert("您的密码忘了填写了或者长度不正确！");
document.form.password.focus();
}
else {
document.form.submit();
}
}
-->
</script>
<body>
<table width="90%" border="0" cellspacing="0" cellpadding="0" align="center">
<tr>
<td height="35"> </td>
</tr>
<tr>
<td height="1" align="center">
<%
String info = request.getParameter("info");
if(("1").equals(info))
out.println("<font size=4 color='red'>用户名不存在，请重新登陆！</font><br><br><br>");
else if(("2").equals(info))
out.println("<font size=4 color='red'>密码不正确，请重新登陆！</font><br><br><br>");
else if(info.equals("3"))
out.println("<font size=4 color='red'>验证码不正确，请重新登陆！</font><br><br><br>");
else
out.println("<font size=4 color='red'>请登陆！</font><br><br><br>");
%>
</td>
</tr>
<tr>
<td align="center">
<!--登陆部分-->
<form method=post action="chek_login.jsp" name="form">
<table width="170" border="0" cellspacing="0" cellpadding="0">
<tr>
<td><img src="imags/userlogin.gif" border="0"></td>
</tr>
</table>
<table width="170" bgcolor="D2E8FF" style="border-bottom:1px solid #0079CE; border-left:1px solid #0079CE; border-right:1px solid #0079CE ">
<tr><td height="5"></td></tr>
<tr><td><img src="imags/username2.gif"></td><td><input type="text" name="ID" size="13"></td></tr>
<tr><td width="56"><img src="imags/userps2.gif"></td><td width="113"><input type="Password" name="password" size="13"></td></tr>
<tr><td width="56"><img src="images/userym2.gif"></td><td width="113"><input type="text" name="chkcode" size="4"> <img border=1 src="createMa.jsp"></td></tr>
<tr>
<td align="center" colspan="2" height="30"><a href="javascript:loginsubmit();"><img src="imags/log_button.gif" border="0"></a> <a href="register.jsp"><img src="imags/reg_button.gif" border="0"></a></td>
</tr>
<tr><td colspan="2" align="right"></td></tr>
</table>
</form>
<!--登陆部分-->
</td>
</tr>
<tr>
<td>
</td>
</tr>
</table>
</body>
</html>
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