📄 login_check.jsp
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<%@ page language="java" import="java.util.*,mypack.*" 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>My JSP 'login_check.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>
<jsp:useBean id="mm" class="mypack.UserDB" scope="session"/>
<% String username=request.getParameter("username");
String userpassword=request.getParameter("userpassword");
if(username!=null&&userpassword!=null){
boolean flg=mm.checkuser(username,userpassword);
if(flg){
out.println("<center><font color='#FB4F71' size='+3'>欢迎你"+username+"</font></center>");
session.setAttribute("username",username);
int id=mm.getuserid(username);
String userid=String.valueOf(id);
session.setAttribute("userid",userid);
}else{
out.println("<center><font color='#FB4F71' size='+3'>对不起用户名和密码不匹配，新用户请先注册！</font></center>");
out.println("<center><a href='register.jsp'>注册新用户</a></center>");
}
}
%>
</body>
</html>
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