为什么用curl或file_get_content抓取不到数据。
百度经验里,比如http://jingyan.baidu.com/article/00a07f38441c3782d028dc04.html,
直接看页面源代码,是有文章数据。
但是用curl ,file_get_content.都无法正常获取文章内容。
这是为什么?已经伪造了IP,来路等,但还是抓取不到。百度是通过什么防止抓取数据的?
以下是代码:
function fcontents( $url, $timeout = 5, $referer = "" ){ $ch = curl_init(); $header = array ( 'User-Agent: Mozilla/5.0 (Windows NT 5.2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.153 Safari/537.36','X-FORWARDED-FOR:154.125.25.15', 'CLIENT-IP:154.125.25.15' ); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_TIMEOUT, $timeout); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_HTTPHEADER, $header); //构造用户IP curl_setopt($ch, CURLOPT_REFERER, "http://www.baidu.com/");//构造来路 $result = curl_exec($ch); curl_close($ch); return $result;}$html = fcontents('http://jingyan.baidu.com/article/00a07f38441c3782d028dc04.html');echo $html;
回复讨论(解决方案)
curl 只是抓取这个页面内容,但这个页面有其它许多的动态内容是不能通过抓取去填充的
curl 只是抓取这个页面内容,但这个页面有其它许多的动态内容是不能通过抓取去填充的
文章数据应该不是动态的吧,我们查看页面源代码,应该是能查看到的代码通过curl都能抓取到吧,而且这个页面不用登陆也能看到,搜索引擎的蜘蛛也能抓取,为什么我现在用curl抓取不到呢?
没有cookie的原因吧。先把cookie加上。
$url = "http://jingyan.baidu.com/article/00a07f38441c3782d028dc04.html";$cookie_jar = dirname(__FILE__)."/jy.cookie";/* 获取cookie */$ch = curl_init();curl_setopt($ch, CURLOPT_URL, $url);curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_jar);curl_exec($ch);curl_close($ch);
然后请求的时候带上cookie:
$ch = curl_init();curl_setopt($ch, CURLOPT_URL, $url);curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_jar);curl_setopt($ch, CURLOPT_HEADER, 0);$res = curl_exec($ch);curl_close($ch);echo $res;
没有cookie的原因吧。先把cookie加上。
$url = "http://jingyan.baidu.com/article/00a07f38441c3782d028dc04.html";$cookie_jar = dirname(__FILE__)."/jy.cookie";/* 获取cookie */$ch = curl_init();curl_setopt($ch, CURLOPT_URL, $url);curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_jar);curl_exec($ch);curl_close($ch);
然后请求的时候带上cookie:
$ch = curl_init();curl_setopt($ch, CURLOPT_URL, $url);curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_jar);curl_setopt($ch, CURLOPT_HEADER, 0);$res = curl_exec($ch);curl_close($ch);echo $res;
加了也不行。在本地环境和三个不同IP的服务器上试了,都抓不到。
没有cookie的原因吧。先把cookie加上。
$url = "http://jingyan.baidu.com/article/00a07f38441c3782d028dc04.html";$cookie_jar = dirname(__FILE__)."/jy.cookie";/* 获取cookie */$ch = curl_init();curl_setopt($ch, CURLOPT_URL, $url);curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_jar);curl_exec($ch);curl_close($ch);
然后请求的时候带上cookie:
$ch = curl_init();curl_setopt($ch, CURLOPT_URL, $url);curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_jar);curl_setopt($ch, CURLOPT_HEADER, 0);$res = curl_exec($ch);curl_close($ch);echo $res;
加了也不行。在本地环境和三个不同IP的服务器上试了,都抓不到。
使用我上面的代码,抓取到的就是百度经验的页面。你为何不把你的代码贴出来(加上cookie的代码)。
没有cookie的原因吧。先把cookie加上。
$url = "http://jingyan.baidu.com/article/00a07f38441c3782d028dc04.html";$cookie_jar = dirname(__FILE__)."/jy.cookie";/* 获取cookie */$ch = curl_init();curl_setopt($ch, CURLOPT_URL, $url);curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_jar);curl_exec($ch);curl_close($ch);
然后请求的时候带上cookie:
$ch = curl_init();curl_setopt($ch, CURLOPT_URL, $url);curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_jar);curl_setopt($ch, CURLOPT_HEADER, 0);$res = curl_exec($ch);curl_close($ch);echo $res;
加了也不行。在本地环境和三个不同IP的服务器上试了,都抓不到。
使用我上面的代码,抓取到的就是百度经验的页面。你为何不把你的代码贴出来(加上cookie的代码)。
非常感谢,是我自己弄错了。少加了一行代码。

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