使用php snoopy 类GET/POST请求模拟登陆

栏目分类：PHP教程    发布日期：2017-08-21    浏览次数：5494次     收藏

snoopy是一个php类，用来模仿web浏览器的功能，它能完成获取网页内容和发送表单的任务。

官方网站 http://snoopy.sourceforge.net/

下面是它的一些特征：

1. 方便抓取网页的内容
2. 方便抓取网页的文字（去掉HTML代码）
3. 方便抓取网页的链接
4. 支持代理主机
5. 支持基本的用户/密码认证模式
6. 支持自定义用户agent,referer,cookies和header内容
7. 支持浏览器转向，并能控制转向深度
8. 能把网页中的链接扩展成高质量的url（默认）
9. 方便提交数据并且获取返回值
10. 支持跟踪HTML框架（v0.92增加）
11. 支持再转向的时候传递cookies

下面是简单的例子，比如说我们抓取我的blog的文字

<?php
include "Snoopy.class.php"; 
$snoopy = new Snoopy; 
$snoopy->fetchtext("http://www.xxxx.com/blog"); 
echo $snoopy->results; 
?>

^_^，不错把，在比如抓取链接

<?php
include "Snoopy.class.php"; 
$snoopy = new Snoopy; 
$snoopy->fetchlinks("http://www.xxxx.com/blog"); 
print_r($snoopy->results); 
?>

<?php
include("snoopy.class.php");
$snoopy = new Snoopy;
// need an proxy?://
$snoopy->proxy_host = "my.proxy.host";
$snoopy->proxy_port = "8080";
// set browser and referer:
$snoopy->agent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)";
$snoopy->referer = "http://www.xxxx.com/";
// set some cookies:
$snoopy->cookies["SessionID"] = '238472834723489';
$snoopy->cookies["favoriteColor"] = "blue";
// set an raw-header:
$snoopy->rawheaders["Pragma"] = "no-cache";
// set some internal variables:
$snoopy->maxredirs = 2;
$snoopy->offsiteok = false;
$snoopy->expandlinks = false;
// set username and password (optional)//
$snoopy->user = "joe";
snoopy->pass = "bloe";
// fetch the text of the website www.google.com:
if($snoopy->fetchtext("http://www.google.com"))
{     // other methods: fetch, fetchform, fetchlinks, submittext and submitlinks
        // response code:    print "response code: ".$snoopy->response_code."<br/>\n";
        // print the headers:        print "<b>Headers:</b><br/>";
    while(list($key,$val) = each($snoopy->headers))
    {    
       print $key.": ".$val."<br/>\n";
    }       
     print "<br/>\n";
        // print the texts of the website:    print "<pre>".htmlspecialchars($snoopy->results)."</pre>\n";
    }
    else
     {    print "Snoopy: error while fetching document: ".$snoopy->error."\n";    
}
?>

首先，我们要获取到登陆需要发送什么字段，目标地址是什么。这里我们使用snoopy的fetchform来实现。

<? 
include "Snoopy.class.php"; 
$snoopy = new Snoopy; 
$snoopy->fetchform("http://www.xxxx.com/login.php?action=login"); 
print $snoopy->results; 
?>

当然你也可以直接查看http://www.phpx.com/happy/...的源代码来实现，不过这样更加方便把。这里，我们获取到目标和提交的数据，下一步就可以实现模拟登陆了。代码如下：

<? 
include "Snoopy.class.php"; 
$snoopy = new Snoopy; 
$submit_url = "http://www.xxxx.com/login.php?action=login"; 

    $submit_vars["loginmode"] = "normal"; 
    $submit_vars["styleid"] = "1"; 
    $submit_vars["cookietime"] = "315360000"; 
    $submit_vars["loginfield"] = "username"; 
    $submit_vars["username"] = "********"; //你的用户名 
    $submit_vars["password"] = "*******";  //你的密码 
    $submit_vars["questionid"] = "0"; 
    $submit_vars["answer"] = "";     
    $submit_vars["loginsubmit"] = "提   交";     
    $snoopy->submit($submit_url,$submit_vars); 
     print $snoopy->results;

?>