📄 check.jsp
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<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@ page import="java.sql.*" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP '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>
<%
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=bookshop";
Connection conn=DriverManager.getConnection(url,"sa","123");
Statement st=conn.createStatement();
String uid, pwd;
uid = request.getParameter("userid");
pwd = "";
try{
ResultSet rs=st.executeQuery("select * from manager where name='"+uid+"'");
if(rs.next())
{pwd=request.getParameter("userpwd");
if(pwd.equals(rs.getString("psw")))
{session.setAttribute("Uid",uid);
response.sendRedirect("middle.jsp");
}
else
{out.println("<script language='javascript'>alert('您输入的密码错误');window.location.href='login.html';</script>");}
}
else
{out.println("<script language='javascript'>alert('您输入的用户名错误');window.location.href='login.html';</script>");}
}catch(Exception e)
{out.println("<script language='javascript'>alert('您的操作有误');window.location.href='login.html';</script>");}
%>
<body>
</body>
</html>
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