1、用户登录界面log.jsp
<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<!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">
<title>用户登陆</title>
</head>
<body>
<form method="post" action="Login.jsp">
<DIV align="center">
<P>用户名<input type ="text" name="userName" value="" size="15" height="15"></P>
<P>密 码<input type ="password" name="Password1" value="" size="15" height="15"></P>
<P><INPUT type=submit value=登陆 name=B1> <INPUT type=reset value=重填 name=B2> <INPUT onclick="window.open('newuser.jsp')" type=button value=注册 name=B3></P>
</DIV>
</form>
<form method="get" action="sh.jsp"><input type="submit" name="check" value="查询"></form>
</body>
</html>
2、处理用户登录的程序login.jsp
<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<%@include file="ConnDB.jsp"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta name="robots" content="noindex,nofollow" />
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>登录检查</title>
</head>
<body>
<%
String userName = request.getParameter("userName");
String Password = request.getParameter("Password1");
Statement stmt_Check=conn.createStatement();
String sql = "select * from admin where userPwd='"+ Password + "' and userName='" + userName +"'";
ResultSet RsLoginCheck = stmt_Chec
