There is no other way but that isn't a problem because you can use any nonexistent callback url for the redirection. As described in the API documentation you can copy/paste the code from the redirected url in your browser adress bar, the content of that site (usually stating a failure) isn't of relevance.

Thanks Logan, my goal was to automate the process so that it get the news data every morning without any human actions. but its seems like it's not yet possible

The redirection only happens when your app is authorized by the user. This is a one time task if you're the only user. Refreshing the bearer token doesn't involve redirections.