问题
I need to generate a Page Access Token for a webpage that I have, this token will be used by the webpage to post to its Facebook Page feed.
This is what I do :
- Go to Graph API Explorer
- Choose my app from the dropdown
- Click
Get Access Token - Choose correct permissions(
manage_pages/user_events)
To get the Page Access Token I have to run me/accounts in the Graph API Explorer. This will show all the pages I got with a new Page Access Token (short lived(about 60 min)) to each one.
This Page Access Token will work just fine to use in my C# code to post to the feed.
Problem
When another user uses my webpage to post a post I need to generate a new Page Access Token(in code) and then use it to post the userpost to the site´s facebook feed. The problem is that I could clearly not be there to grant the post so how do I handle this?
I could obviously not run the me/accounts(in code) command to get the Page Access Token from here.
I have looked at extended Access Token but this will last 60 days and then it will be the same problem as above.
回答1:
What you need is an Extended Page Token:
- generate User Access Token with
manage_pagesandpublish_actions - generate Extended User Token (valid for 60 days): https://graph.facebook.com/oauth/access_token?grant_type=fb_exchange_token&client_id=[app-id]&client_secret=[app-secret]&fb_exchange_token=[short-lived-token]
- call
/me/accountswith the Extended User Token to get Extended Page Tokens
Extended Page Tokens are valid forever, so you don´t need to generate a new one all the time.
Source (including information about all the Tokens): http://www.devils-heaven.com/facebook-access-tokens/
回答2:
On https://developers.facebook.com/docs/pages/access-tokens
Getting Page Access Tokens
GET /{page-id}?fields=access_token&access_token={user_access_token}
The response will look like this:
{
"access_token": "{your-page-access-token}",
"id": "{page-id}"
}
来源：https://stackoverflow.com/questions/25470403/how-to-get-page-access-token-by-code