问题
I need to know if it's possible to change the caption of a picture uploaded in facebook. I could upload without trouble, but now I want to change the caption using the facebook graph api. Is it possible? Thanks
回答1:
It looks like the name field is what you want to POST to, in order to change the caption: https://developers.facebook.com/docs/reference/api/photo/
However, they don't support writing to it. The things you can write are listed here: https://developers.facebook.com/docs/reference/api/#publishing
It is possible to upload the photo with a new caption, but it looks as if the user has to approve the addition of a photo to his album, and I'm not sure that part is automatable.
Also, Facebook has blocked the ability to delete photos via the Graph API; so even with the approval barrier above you could not delete the photo with the old caption and upload it with a new caption, in order to effectively change the caption. The error message on sending the correct DELETE command is: {"error":{"type":"OAuthException","message":"(#3) Application does not have the capability to make this API call."}}
So the short answer is "it is apparently not possible as of June 11 2011".
来源：https://stackoverflow.com/questions/4685198/change-picture-caption-thru-graph-api-c-sharp-facebook