问题
I cannot understand the FB API. I feel the problem is because I cannot understand the protocals OAouth draft page (source, page 19). Well firstly it was so but now I understand that OAouth 1.0 and OAuth 2.0 are totally different protocols although for the same goal, apparently..
Perhaps the most essential stuff are FB docs about authentication here and a blog post here. I am trying to categorize here threads to dig deeper into the FB API.
回答1:
I cannot find things such as picture or friends in the Graph API -object
That’s because you didn’t ask for them …
To get a user’s friends, you have to query the /userid/friends connection.
And for the user’s picture, you can just use the address https://graph.facebook.com/userid/picture as the image src – this will redirect to the actual picture.
It’s all described here: https://developers.facebook.com/docs/reference/api/user/ under „Connections”
回答2:
I am trying to organize here things.
Trials and some Confusing Points with Questions
Some code here and in history. Logs in history.
[solved] Trial 1 shows a cover picture from FB but not using FB API. FB -object does not store the picture URL! You need to use the POST -url.
[solved] Trial 2 with
/userIddoes not request friends (thanks to one answer) but now a new problem with authorization, solved by this answer here.[solved] Trial 3 with
/userID/friendsdoes not work due to no access-token. Solution here.[solved] how do the many inner-most FB.login here to get the access token? Moved this q here.
[solved] what does the
__PROTO__mean? -Unreliable, you are not going to use it (according to the chat -msg in history).
THIRD-PARTY MATERIAL
Manuals
Graph API here
JS SDK here
The OAuth draft paper about the webserver flow here.
FB.login here
Perhaps related
[URL -method] facebook graph api picture
[URL -method] facebook graph api photos retrieve
[URL -method] facebook graph api retrieve wall photos
[PHP] How to use Facebook graph API to retrieve fan photos uploaded to wall of fan page?
[PHP] Pulling in photos via Facebook Graph API
[Unsolved] https://stackoverflow.com/questions/7819091/can-i-retrieve-facebook-photos-through-graph-api-that-are-only-shared-with-frien
来源：https://stackoverflow.com/questions/10905476/threads-about-fb-object-javascript-sdk-oaauth-2-0-and-graph-api