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Forum Discussion
How to automate getting a new token using Java?
Now that DB uses "short-lived" tokens, I am having trouble "automating" token refresh within an application.
Using the Java code examples, I can get the DB URL where I manually have to log into...
Yes, that's correct. The SDK client knows how to use the credentials (refresh token, app key, and for the non-PKCE case, app secret) to automatically perform the refresh process whenever needed, so that calls continue to work.
Greg-DB
Dropbox Staff
Dropbox StaffIt is not possible to fully automate the OAuth process where the user chooses to authorize the app and the app then receives the resulting access token and optional refresh token. This needs to be done manually by the user at least once.
If your app needs to maintain long-term access without the user manually re-authorizing it repeatedly, the app should request "offline" access so that it gets a refresh token. The refresh token doesn't expire and can be stored and used repeatedly to get new short-lived access tokens whenever needed, without the user manually reauthorizing the app.
Here's some example code of processing the authorization flow using the official Dropbox API v2 Java SDK, such as to get a refresh token:
For instance, here's a line where it requests "offline" access in order to get a refresh token:
And here's an example of storing the refresh token:
As long as you supply the necessary credentials, the SDK will then handle the refresh process for you automatically, e.g.:
Thank you!
I used the top Java program you listed to do the manual approach.
If I understood your reply correctly (a show-stopper), I'm disappointed that there's no total programmatic way to get a new token when expired. We can't expect our users to go to the DB website click here and there, get a new access key, and paste it into the client-side application.
Thanks
- Greg-DB
To clarify, once you have a refresh token, the process to get a new short-lived access token when the previous short-lived access token is expired is entirely programmatic and does not require manual user interaction. In fact, the SDK will do it for you automatically in the background. (You can call DbxClientV2.refreshAccessToken on demand if desired, but it's not necessary.)
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