直接echo file_get_contents(‘http://fitness.39.net/food/’);
显示:
<code>Warning: file_get_contents(http://fitness.39.net/food/) [function.file-get-contents]: failed to open stream: HTTP request failed!</code>
怀疑是服务器验证了的浏览器UA,于是在php.ini中设置:
<code>allow_url_fopen =onuser_agent=”Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)”</code>
重启apache,然后还是成功的失败了,依旧:
<code>Warning: file_get_contents(http://fitness.39.net/food/) [function.file-get-contents]: failed to open stream: HTTP request failed!</code>
求高手解答
回复内容:
直接echo file_get_contents(‘http://fitness.39.net/food/’);
显示:
<code>Warning: file_get_contents(http://fitness.39.net/food/) [function.file-get-contents]: failed to open stream: HTTP request failed!</code>
怀疑是服务器验证了的浏览器UA,于是在php.ini中设置:
<code>allow_url_fopen =onuser_agent=”Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)”</code>
重启apache,然后还是成功的失败了,依旧:
<code>Warning: file_get_contents(http:/<strong>+本文来源gao@daima#com搞(%代@#码网</strong><pre>搞代gaodaima码
/fitness.39.net/food/) [function.file-get-contents]: failed to open stream: HTTP request failed!
求高手解答
<body>
问题找到了。事先说明,我是用 Node.js
来测试的。
初试
首先我用了下面的代码:
<code class="lang-javascript">var spidex = require("spidex");spidex.get("http://fitness.39.net/food/", function(html, status, respHeader) { console.log(html);}, "utf8").on("error", function(err) { console.log(err.message);});</code>
传回来的是访问失败,连接错误。
假设
然后我用 Chrome
来查看我们正常访问时的一些 header
逐个去试。
<code class="lang-javascript">var spidex = require("spidex");var headers = { "connection" : "keep-alive"};spidex.get("http://fitness.39.net/food/", function(html, status, respHeader) { console.log(html);}, headers, "utf8").on("error", function(err) { console.log(err.message);});</code>
还是连接错误——直到我添加上了 accept
时:
<code class="lang-javascript">var spidex = require("spidex");var headers = { "connection" : "keep-alive", "accept" : "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"};spidex.get("http://fitness.39.net/food/", function(html, status, respHeader) { console.log(html);}, headers, "utf8").on("error", function(err) { console.log(err.message);});</code>
结果出来了。
结论
目测是服务端做了对 accept
什么的的验证吧,总之在请求头上面添加一个 accept
字段,并且值设置为 text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
即可。