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I am trying to login with facebook, with spring-social, but after of login in facebook I got the next error: 

ERROR: org.springframework.social.connect.web.ProviderSignInController -     Exception while completing OAuth 2 connection: 
 org.springframework.web.client.ResourceAccessException: I/O error on POST     request for    "https://graph.facebook.com/v2.3/oauth/access_token":graph.facebook.com; nested     exception is java.net.UnknownHostException: graph.facebook.com

In the rest template class, after doExecute(expanded, method, requestCallback, responseExtractor); appears the error, expanded is https://graph.facebook.com/v2.3/oauth/access_token, method POST.

My code is from spring-social-samples, from github.Maybe the problem is in my account of facebook developer???

nole
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  • try pinging graph.facebook.com to see if you can see it, is it accessed thru a proxy? – farrellmr Dec 04 '15 at 12:48
  • yes, it is accessed. – nole Dec 04 '15 at 13:08
  • No, that is not an issue with your FB account, but a network issue on your server – looks like it is not able to resolve the host name to an IP address. Ask your server admin to look into the issue. – CBroe Dec 04 '15 at 13:10
  • CBroe I'm not sure with your responde, because If I write in my browser https://graph.facebook.com/v2.3/oauth/access_token, my browser will return me error: { message: "Missing redirect_uri parameter.", type: "OAuthException", code: 191, fbtrace_id: "Du+NeoMBe+6" } } – nole Dec 04 '15 at 13:15
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    excecute this command "nslookup graph.facebook.com" in the same machine where your application is running – reos Dec 04 '15 at 14:44
  • try to update the dependencies to the latest version, spring-social 1.14 and spring-social-facebook 2.0.3. The samples would just not work for me until the dependencies were updated to the latest. – kmansoor Jan 22 '16 at 17:03

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