How to get Facebook friends list in using Spring Social - spring

Question

I am trying to get FB friends list. I know that it will return only those who also using the app.
I made REST point that should return friends list. Here is modified code for tests:
#RequestMapping(value = "/fbfriends",
method = RequestMethod.GET,
produces = MediaType.APPLICATION_JSON_VALUE)
#Timed
public List<User> GetFriends(Connection<?> connection) {
log.debug("REST request to get all Friends");
if (connection == null) {
log.error("Cannot create social user because connection is null");
throw new IllegalArgumentException("Connection cannot be null");
}
log.debug("Got connection");
List<Permission> permissions = facebook.userOperations().getUserPermissions();
log.debug("Permission size: " + permissions.size() + " Permission: " + permissions);
for (Permission perm: permissions){
log.debug(perm.getName() + " " + perm.getStatus());
}
List<User> friends = facebook.friendOperations().getFriendProfiles();
log.debug("Friends size: " + friends.size() + " Friends:" + friends.toString());
PagedList<Post> feed = facebook.feedOperations().getFeed();
log.debug("Feed size: " + feed.size() + " Feed: " + feed.toString());
PagedList<UserTaggableFriend> taggable = facebook.friendOperations().getTaggableFriends();
log.debug("Taggable size: " + friends.size() + " Taggable:" + friends.toString());
log.debug("Ho Ho Ho");
return friends;
}
All those log.debug just for me, here is the result:
2016-07-27 17:38:22.443 DEBUG 10828 --- [nio-8080-exec-1] c.m.myapp.aop.logging.LoggingAspect : Exit: org.springframework.social.connect.ConnectionRepository.findPrimaryConnection() with result = org.springframework.social.connect.support.OAuth2Connection#99deb877
2016-07-27 17:38:22.581 DEBUG 10828 --- [nio-8080-exec-1] c.m.myapp.web.rest.FbFriendResource : Permission size: 2 Permission: [org.springframework.social.facebook.api.Permission#8fbfe4, org.springframework.social.facebook.api.Permission#5328b7d2]
2016-07-27 17:38:22.581 DEBUG 10828 --- [nio-8080-exec-1] c.m.myapp.web.rest.FbFriendResource : email granted
2016-07-27 17:38:22.581 DEBUG 10828 --- [nio-8080-exec-1] c.m.myapp.web.rest.FbFriendResource : public_profile granted
2016-07-27 17:38:22.694 DEBUG 10828 --- [nio-8080-exec-1] c.m.myapp.web.rest.FbFriendResource : Friends size: 0 Friends:[]
2016-07-27 17:38:22.739 DEBUG 10828 --- [nio-8080-exec-1] c.m.myapp.web.rest.FbFriendResource : Feed size: 0 Feed: []
2016-07-27 17:38:22.788 DEBUG 10828 --- [nio-8080-exec-1] c.m.myapp.web.rest.FbFriendResource : Taggable size: 0 Taggable:[]
2016-07-27 17:38:22.789 DEBUG 10828 --- [nio-8080-exec-1] c.m.myapp.web.rest.FbFriendResource : Ho Ho Ho
2016-07-27 17:38:22.798 DEBUG 10828 --- [nio-8080-exec-1] c.m.myapp.aop.logging.LoggingAspect : Exit: com.mycompany.myapp.web.rest.FbFriendResource.GetFriends() with result = []
As you can see there is only two permissions granted: public_profile and email.
In some examples I found that permissions could be added:
I didn't found anything like this. In my App settings I found only this page under "App Review"
Here is user_friends "live and available for users"
What I did wrong or how to actually use this "granted by default" permission using Spring Social?
How can I ask for additional permissions like user_posts and use them in Spring Framework?

Answer 1

The solution for my problem was pretty simple. If someone has the same problems, permissions for the app defined in request to the FB at Facebook Login button.
Something like this depends on your case.
<fb:login-button scope="public_profile,email,user_friends" onlogin="checkLoginState();">
</fb:login-button>
Was new to this and just used sample code for login button without review and thoght that permissions defined at App settings.