📄 login.jsp
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<%@ page language="java" import="java.util.*" pageEncoding="gbk"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql" %>
<%
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>
<script type="text/javascript" language="javascript">
function check()
{
if(document.form.account.value=="")
{
alert("请填写用户名!");
document.form.account.focus();
return false;
}else if(document.form.password.value=="")
{
alert("请填写密码!");
document.form.password.focus();
return false;
}
}
</script>
<base href="<%=basePath%>">
<title>My JSP 'Head.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" href="mm_health_nutr.css" type="text/css" />
</head>
<body bgcolor="#F4FFE4">
<form onsubmit="return check()" action="servlet/LoginServlet" method="Get" name="form" >
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<c:if test="<%=request.getSession().getAttribute("users")==null %>">
<td>用户名:<input type="text" name="account"></td>
<td>密码:<input type="password" name="password"></td>
<td><input type="submit" name="Submit" value="登陆"></td>
</c:if>
<c:if test="<%=request.getSession().getAttribute("users")!=null %>">
<jsp:forward page="LoginResult.jsp?isUser=true"></jsp:forward>
</c:if>
</tr>
</table>
</form>
</body>
</html>
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