Get Facebook OAuth token from code parameter

Question

I build a FB app which does the following:

1) redirect initial request to FB, in order to authenticate/login, as follows:

https://www.facebook.com/dialog/oauth?client_id=MYAPPID&redirect_uri=http://localhost:8080/FB/servlet&scope=read_stream&response_type=code

2) in servlet, get the "code" parameter (which is the signed_request?):

 String signedReq = request.getParameter("code");

// the String retrieved from the code parameter is:
// 3DaDJXq1Mlsq67GbeudlUxu7bY5Um4hSJlwzoPCHhp4.eyJpdiI6Ikc1ODNuRjZXbnhCb0hUV1FEMVNTQUEifQ._iXKxSGiNHfc-i5fRO35ny6hZ03DcLwu4bpAkslqoZk6OfxW5Uo36HwhUH2Gwm2byPh5rVp2kKCNS6EoPEZJzsqdhZ_MhuUD8WGky1dx5J-qNOUqQK9uNM4HG4ziSgFaAV8mzMGeUeRo8KSL0tcKuq

3) How to get the OAuth token from this String?

Thanks in advance! M

stackoverflow.com/questions/7510622/… There you got the answer. — Pablo Castilla
– Pablo Castilla, Commented Sep 26, 2011 at 13:04

Neikos · Accepted Answer · 2011-06-04 16:00:54Z

5

On the facebook docs it tells you to send it back to facebook:

http://developers.facebook.com/docs/authentication/

Basically you do this:

   https://graph.facebook.com/oauth/access_token?
   client_id=YOUR_APP_ID&redirect_uri=YOUR_URL&
   client_secret=YOUR_APP_SECRET&code=THE_CODE_FROM_ABOVE

This should work for you normally.

answered Jun 4, 2011 at 16:00

Neikos

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