There are two method origin token , you can use any one of them, first one may be easier.
- Origin from https://developers.facebook.com
Tools & Support -> Graph API Explorer -> Get token -> Get access token choose authority you need, get!
2. Origin from Web
A. Request in your explorer
Redirect_url is some url after authorized.
After login Facebook and get authority , URL will redirect to your redirect_url and contains parameter like code=*ABC*
B. https://graph.facebook.com/oauth/access_token?client_id= Your_APP_ID &redirect_uri=***&client_secret=Your_APP_Secret&code=*ABC*
Now you will see your access token, and use it.
Debug Tools for Access Token:
When you got a access token , you want to know more information of this token , you can do as follows
Tools & Support ->Access Token Tool -> User Token line press debug-> input your access token start debug.
Expire, appid, userid and other info will show.