这样用：
var request = require('request');request('http://graph.facebook.com/http://www.google.com', function (error, response, body) { if (!error && response.statusCode == 200) { console.log(body) }})结果body显示出了禁止访问的html平文代码。而用curl却可以得到JSON数据：
curl http://graph.facebook.com/http://www.google.com解决方案
你可以用curl -v 来看一下一个请求的过程和信息。
curl并不是单纯的http请求，而是带了一些header过去。
request如果不设置options，默认好像缺少一些信息，可能会被服务器识别为有害操作，所以屏蔽了。
curl -v http://www.html-js.com
* Adding handle: conn: 0x7fe323004000* Adding handle: send: 0* Adding handle: recv: 0* Curl_addHandleToPipeline: length: 1* - Conn 0 (0x7fe323004000) send_pipe: 1, recv_pipe: 0* About to connect() to www.html-js.com port 80 (#0)* Trying 42.121.105.152...* Connected to www.html-js.com (42.121.105.152) port 80 (#0)> GET / HTTP/1.1> User-Agent: curl/7.30.0> Host: www.html-js.com> Accept: */*> < HTTP/1.1 200 OK* Server nginx/1.0.15 is not blacklisted< Server: nginx/1.0.15< Date: Fri, 28 Feb 2014 12:20:40 GMT< Content-Type: text/html; charset=utf-8< Connection: keep-alive< Vary: Accept-Encoding< X-Powered-By: Express< Content-Length: 35669< ETag: "-2001532266"< Set-Cookie: connect.sess=s%3Aj%3A%7B%7D.fCXYDYnmzIsVbg6xXs7Osf5WzoOis7ziciQGrLr63cQ; Path=/; HttpOnly<