Retrieving access code server side

[blandger]

Now it works much better but still is not quite good. Weird error at the end of successful call.

Log looks :

23:03:42.955 [http-apr-8080-exec-6] DEBUG o.a.h.i.c.PoolingClientConnectionManager - Connection request: [route: {s}->https://graph.facebook.com][total kept alive: 0; route allocated: 0 of 5; total allocated: 0 of 100]
23:03:43.037 [http-apr-8080-exec-6] DEBUG o.a.h.i.c.PoolingClientConnectionManager - Connection leased: [id: 0][route: {s}->https://graph.facebook.com][total kept alive: 0; route allocated: 1 of 5; total allocated: 1 of 100]
23:03:43.315 [http-apr-8080-exec-6] DEBUG o.a.h.i.c.DefaultClientConnectionOperator - Connecting to graph.facebook.com:443
23:03:43.958 [http-apr-8080-exec-6] DEBUG o.a.h.c.protocol.RequestAddCookies - CookieSpec selected: best-match
23:03:44.122 [Finalizer] DEBUG o.a.h.i.c.PoolingClientConnectionManager - Connection manager is shutting down
23:03:44.124 [Finalizer] DEBUG o.a.h.i.c.PoolingClientConnectionManager - Connection manager shut down
23:03:44.162 [http-apr-8080-exec-6] DEBUG o.a.h.c.protocol.RequestAuthCache - Auth cache not set in the context
23:03:44.164 [http-apr-8080-exec-6] DEBUG o.a.h.c.p.RequestProxyAuthentication - Proxy auth state: UNCHALLENGED
23:03:44.167 [http-apr-8080-exec-6] DEBUG o.a.h.impl.client.DefaultHttpClient - Attempt 1 to execute request
23:03:44.168 [http-apr-8080-exec-6] DEBUG o.a.h.i.conn.DefaultClientConnection - Sending request: POST /oauth/access_token HTTP/1.1
23:03:44.170 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - >> "POST /oauth/access_token HTTP/1.1[\r][\n]"
23:03:44.176 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - >> "Accept: application/json, application/*+json[\r][\n]"
23:03:44.177 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - >> "Content-Type: application/x-www-form-urlencoded[\r][\n]"
23:03:44.178 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - >> "Authorization: Basic NTEzODgzNDc4NjMzNTkyOjYzYThhOWM2ZWU5MjXXXXXXXXXXXX XXXXhZWJhOWZh[\r][\n]"
23:03:44.178 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - >> "Content-Length: 102[\r][\n]"
23:03:44.179 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - >> "Host: graph.facebook.com[\r][\n]"
23:03:44.179 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - >> "Connection: Keep-Alive[\r][\n]"
23:03:44.180 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - >> "User-Agent: Apache-HttpClient/4.2.2 (java 1.5)[\r][\n]"
23:03:44.180 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - >> "[\r][\n]"
23:03:44.181 [http-apr-8080-exec-6] DEBUG org.apache.http.headers - >> POST /oauth/access_token HTTP/1.1
23:03:44.181 [http-apr-8080-exec-6] DEBUG org.apache.http.headers - >> Accept: application/json, application/*+json
23:03:44.181 [http-apr-8080-exec-6] DEBUG org.apache.http.headers - >> Content-Type: application/x-www-form-urlencoded
23:03:44.182 [http-apr-8080-exec-6] DEBUG org.apache.http.headers - >> Authorization: Basic NTEzODgzNDc4NjMzNTkyOjYzYThhOWM2ZWUXXXXXXXXXXXXXXX XXXXXXhOWZh
23:03:44.182 [http-apr-8080-exec-6] DEBUG org.apache.http.headers - >> Content-Length: 102
23:03:44.183 [http-apr-8080-exec-6] DEBUG org.apache.http.headers - >> Host: graph.facebook.com
23:03:44.183 [http-apr-8080-exec-6] DEBUG org.apache.http.headers - >> Connection: Keep-Alive
23:03:44.183 [http-apr-8080-exec-6] DEBUG org.apache.http.headers - >> User-Agent: Apache-HttpClient/4.2.2 (java 1.5)
23:03:44.184 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - >> "client_id=513883478XXXXXX&client_secret=63a8a9cXX XXXXXXXXXXba9fa&grant_type=client_credentials"
23:03:44.371 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - << "HTTP/1.1 200 OK[\r][\n]"
23:03:44.381 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - << "Access-Control-Allow-Origin: *[\r][\n]"
23:03:44.382 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - << "Cache-Control: private, no-cache, no-store, must-revalidate[\r][\n]"
23:03:44.382 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - << "Content-Type: text/plain; charset=UTF-8[\r][\n]"
23:03:44.383 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - << "Expires: Sat, 01 Jan 2000 00:00:00 GMT[\r][\n]"
23:03:44.384 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - << "Pragma: no-cache[\r][\n]"
23:03:44.384 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - << "X-FB-Rev: 734528[\r][\n]"
23:03:44.385 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - << "X-FB-Debug: OG/tgqsKDXegiszj+PinqR8Xzsmo8P+j1KXEUv/fmFo=[\r][\n]"
23:03:44.385 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - << "Date: Tue, 12 Feb 2013 21:03:46 GMT[\r][\n]"
23:03:44.386 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - << "Connection: keep-alive[\r][\n]"
23:03:44.387 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - << "Content-Length: 56[\r][\n]"
23:03:44.387 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - << "[\r][\n]"
23:03:44.391 [http-apr-8080-exec-6] DEBUG o.a.h.i.conn.DefaultClientConnection - Receiving response: HTTP/1.1 200 OK
23:03:44.392 [http-apr-8080-exec-6] DEBUG org.apache.http.headers - << HTTP/1.1 200 OK
23:03:44.392 [http-apr-8080-exec-6] DEBUG org.apache.http.headers - << Access-Control-Allow-Origin: *
23:03:44.393 [http-apr-8080-exec-6] DEBUG org.apache.http.headers - << Cache-Control: private, no-cache, no-store, must-revalidate
23:03:44.393 [http-apr-8080-exec-6] DEBUG org.apache.http.headers - << Content-Type: text/plain; charset=UTF-8
23:03:44.394 [http-apr-8080-exec-6] DEBUG org.apache.http.headers - << Expires: Sat, 01 Jan 2000 00:00:00 GMT
23:03:44.394 [http-apr-8080-exec-6] DEBUG org.apache.http.headers - << Pragma: no-cache
23:03:44.395 [http-apr-8080-exec-6] DEBUG org.apache.http.headers - << X-FB-Rev: 734528
23:03:44.395 [http-apr-8080-exec-6] DEBUG org.apache.http.headers - << X-FB-Debug: OG/tgqsKDXegiszj+PinqR8Xzsmo8P+j1KXEUv/fmFo=
23:03:44.396 [http-apr-8080-exec-6] DEBUG org.apache.http.headers - << Date: Tue, 12 Feb 2013 21:03:46 GMT
23:03:44.396 [http-apr-8080-exec-6] DEBUG org.apache.http.headers - << Connection: keep-alive
23:03:44.396 [http-apr-8080-exec-6] DEBUG org.apache.http.headers - << Content-Length: 56
23:03:44.428 [http-apr-8080-exec-6] DEBUG o.a.h.impl.client.DefaultHttpClient - Connection can be kept alive indefinitely
23:03:44.504 [http-apr-8080-exec-6] DEBUG org.apache.http.wire - << "access_token=5138XXXXXXX3592|G9CdXXXXXXXXXXXXkYn8 j70"
23:03:44.505 [http-apr-8080-exec-6] DEBUG o.a.h.i.c.PoolingClientConnectionManager - Connection [id: 0][route: {s}->https://graph.facebook.com] can be kept alive indefinitely
23:03:44.506 [http-apr-8080-exec-6] DEBUG o.a.h.i.c.PoolingClientConnectionManager - Connection released: [id: 0][route: {s}->https://graph.facebook.com][total kept alive: 1; route allocated: 1 of 5; total allocated: 1 of 100]
23:05:04.805 [http-apr-8080-exec-6] ERROR c.i.w.c.e.EventRegisterController - Publishing REST error
org.springframework.web.client.RestClientException : Could not extract response: no suitable HttpMessageConverter found for response type [interface java.util.Map] and content type [text/plain;charset=UTF-8]
at org.springframework.web.client.HttpMessageConverte rExtractor.extractData(HttpMessageConverterExtract or.java:107) ~[spring-web-3.2.0.RELEASE.jar:3.2.0.RELEASE]
at org.springframework.web.client.RestTemplate.doExec ute(RestTemplate.java:492) ~[spring-web-3.2.0.RELEASE.jar:3.2.0.RELEASE]
at org.springframework.web.client.RestTemplate.execut e(RestTemplate.java:447) ~[spring-web-3.2.0.RELEASE.jar:3.2.0.RELEASE]
at org.springframework.web.client.RestTemplate.postFo rObject(RestTemplate.java:295) ~[spring-web-3.2.0.RELEASE.jar:3.2.0.RELEASE]
at org.springframework.social.oauth2.OAuth2Template.p ostForAccessGrant(OAuth2Template.java:221) ~[spring-social-core-1.1.0.BUILD-SNAPSHOT.jar:1.1.0.BUILD-SNAPSHOT]
at org.springframework.social.oauth2.OAuth2Template.a uthenticateClient(OAuth2Template.java:187) ~[spring-social-core-1.1.0.BUILD-SNAPSHOT.jar:1.1.0.BUILD-SNAPSHOT]
at org.springframework.social.oauth2.OAuth2Template.a uthenticateClient(OAuth2Template.java:174) ~[spring-social-core-1.1.0.BUILD-SNAPSHOT.jar:1.1.0.BUILD-SNAPSHOT]
.................

That happens on call:
accessGrant = oauth.authenticateClient();

[blandger]

I can debug Response from FB in IDE and see it contains some data.
See attach with screenshot.

UPDATE:
Odd screen after upload.
There is LinkedValuedMap with 3 Map entries: client_id + value, client_secret + value, grant_type = client_credentials.
I don't know if that important for error description, but I decided to give that info.

Code for error looks like:

package org.springframework.web.client;

public class HttpMessageConverterExtractor<T> implements ResponseExtractor<T> {
...........
	public T extractData(ClientHttpResponse response) throws IOException {
.......
		for (HttpMessageConverter messageConverter : this.messageConverters) {
.....
		}
		throw new RestClientException(
				"Could not extract response: no suitable HttpMessageConverter found for response type [" +
						this.responseType + "] and content type [" + contentType + "]");
	}

[blandger]

Craig, don't you have any more ideas why it can't find suitable 'HttpMessageConverter messageConverter' for received answer from FB ?
May I can do deeper debug and see structure/answer/response it can't parse properly?

[habuma]

Sorry about that. I've been struggling to get the 1.1.0.M2 releases out and only occasionally glancing at the forums. I saw your post, but thought it might take longer to resolve than I had time for, so I thought I'd just come back to it eventually.

In short, Facebook's an odd one and not consistent with other OAuth2 providers. That's why Spring Social Facebook has its own subclass of OAuth2Template specifically for Facebook: FacebookOAuth2Template. You can see the full code for FacebookOAuth2Template at https://github.com/SpringSource/spri...2Template.java.

You'll see there that a special message converter is set to handle Facebook's non-standard way of returning authorization details. If you're working with Facebook, you're probably better using that implementation directly. But if you want to use OAuth2Template, then you'll need to do something similar to what you see in FacebookOAuth2Template.

[blandger]

Thanks a lot, I've changed
OAuth2Template oauth = new OAuth2Template(...)
to
OAuth2Template oauth = new FacebookOAuth2Template(...)

now it works as expected and publishes app request to FB user's profile.