<%@page import="com.sun.crypto.provider.RSACipher"%>
<%@ page contentType="text/html" pageEncoding="utf-8"%>
<%@ page import="java.sql.*" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>验证数据库</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>
<%!
//定义数据库驱动程序
public static final String DBDRIVER="org.gjt.mm.mysql.Driver";
//数据库连接地址
public static final String DBURL="jdbc:mysql://localhost:3306/gongchengpingtai";
public static final String DBUSER="root";
public static final String DBPASS="123";
%>
<%
Connection conn=null;
PreparedStatement pstmt=null;
ResultSet rs=null;
boolean flag=false;
String name=null;
%>
<%
try{
Class.forName(DBDRIVER);
conn=DriverManager.getConnection(DBURL, DBUSER, DBPASS);
String sql="SELECT userName FROM user WHERE userName=? AND password=?";
pstmt=conn.prepareStatement(sql);
pstmt.setString(1,request.getParameter("id"));
pstmt.setString(2,request.getParameter("passwod"));
rs=pstmt.executeQuery();
if(rs.next()){
name=rs.getString(1);
flag=true;
}
}catch(Exception e){
System.out.println(e);
}finally{
try{
rs.close();
pstmt.close();
conn.close();
}catch(Exception e){}
}
%>
<%
if(flag){
%>
<jsp:forward page="login_success.jsp">
<jsp:param name="uname" value="<%=name %>"/>
</jsp:forward>
<%
}else{
%>
<jsp:forward page="Login_failure.html"></jsp:forward>
<%
}
%>
</body>
</html>
跳出去的页面是Login_failure.html
------解决方案--------------------
我已经帮你解决了。。。