这个是网上的，版权属于原作者所有！
PHP
$_SERVER[‘HTTP_REFERER’];
例子
index.php
<?php
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
?>
<html>
<head><title>frist page</title></head>
<body>
<form action=”test02.php” mrthod=”post” >
message<input type=”text” name=”name” value=”123456″ ></input>
<input type=”submit” value=”submit” ></input>
</form>
</body>
</html>
Test02.php
<?php
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
echo $_SERVER[‘HTTP_REFERER’];
?>
JSP
request.getHeader(“Referer”);
例子
index.jsp
<%–
Document : index
Created on : 2011-11-2, 9:54:43
Author : admin
–%>
<%@page contentType=”text/html” pageEncoding=”UTF-8″%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv=”Content-Type” content=”text/html; charset=UTF-8″>
<title>first page</title>
</head>
<body>
<form action=”test01.jsp” method=”post” >
massage<input type=”text” name=”name” value=”massage” ></input>
<input type=”submit” value=”submit” ></input>
</form>
</body>
</html>
test01.jsp
<%–
Document : test01
Created on : 2011-11-2, 9:57:05
Author : admin
–%>
<%@page contentType=”text/html” pageEncoding=”UTF-8″%>
<%
String url = request.getHeader(“Referer”);
out.println(url);
%>
ASP
<%=Request.ServerVariables( “HTTP_REFERER “)%>
例子
index.asp
<html>
<head>
<title>frist page</title>
</head>
<body>
<form action=”test.asp” method=”post” >
massage<input type=”text” name=”name” value=”message” />
<input type=”submit” value=”submit”>
</form>
</body>
</html>
test.asp
<html>
<head>
<title></title>
</head>
<%=Request.ServerVariables( “HTTP_REFERER “)%>
<body>
<%=url%>
</body>
</html>
