从Facebook检索用户登录名-无需登录

Question

I have a website and I would like retrieve a login name from facebook but without a user authentification in facebook using facebook application. Is it possible?

I've tried this: http://graph.facebook.com/me

This url needs an access token.

I can see this plugin from facebook - PLUGIN - If I've tried this plugin on my website then i needn't to login on facebook and I can see my login name. Is it possible to do using javascript or in server side (ASP.NET C#) in custome solution on my website?

Answer 1

if you have the ID of the facebook user then you can retrieve any of the public displayed things with facebook graph. So he isn't really trying to access the facebook account just retrieve the usernames.

try something like this if the fields are public then you should be able to see them.
graph.facebook.com/<<ID>>?fields=id,name,username

Answer 2

I believe you can do this using an app access token (ie no user login required). Using the Facebook php sdk an app access token can be generated as follows:

require 'libs/fb/facebook.php';

$facebook = new Facebook(array(
  'appId'  => '{app_id}',
  'secret' => '{app_secret}',
));

$access_token = $facebook->getAccessToken();

echo $access_token;

User information can them be obtained using the following REST url:

https://graph.facebook.com/554718794?fields=id,name,username&access_token={app_access_token}