如何获取app access_token(针对这样的错误This method must be called with an app access_token.)
2011-09-23 14:27
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App Login
In addition to User Login, Facebook Platform support App Login using the OAuth 2.0 Client Credential flow. App Login allows you to take various administrative actions for your app, such as retrieving Insights data or approving Requests. GraphAPI calls that require an app access token are clearly denoted in the API reference.
You can obtain the app access token from the Graph API token endpoint at
https://graph.facebook.com/oauth/access_tokenby specifying your app id, app
secret and client_credentials in the grant_type parameter. Both the app id and app secret are generated when your app is created in the Developer App.
https://graph.facebook.com/oauth/access_token? client_id=YOUR_APP_ID&client_secret=YOUR_APP_SECRET& grant_type=client_credentials
Sending an HTTP GET request to the above URL will return an access_token in the body of the response:
You then use this access token when calling app specific parts of the Graph API (such as App Insights):
https://graph.facebook.com/YOUR_APP_ID/insights? access_token=TOKEN_FROM_ABOVE
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