How to get Oauth Token to access the Canvas APIs.

[SravanMaru]

I recently created a sample LTI application( spring boot) by using reference LTI-trivial-application .

It works perfectly, but the token that I use is created by "Manual Token Generation" from Canvas UI, this is for testing application before implement OAuth

Now, this is the time to implement OAuth to get access to the Rest API.

I register an LTI app using XML in Canvas. 

Can you refer this link  LTI LAUNCH  and explain How the Oauth Controller is generating a Access Token for accessing Canvas API's.

But I don't know how to get an OAuth token to access the Canvas Rest API.