I am currently using the Spotify APi. The request URL from which the authentication originates is http://localhost:8080/app/9 The 9 is the parameter for the respective ID of the user.
The callback URL is also entered in Spotif Developer: http://localhost:8080/app/?
I now get the error message: INVALID_CLIENT: Invalid redirect URI
I am aware that this is due to the changed CallbackURi. The question now. How do I create a wildcard for the parameter in the URI?
Thanks for your help.
Lack of understanding made me think that the userID must be included in the callback URI. However, this would not only be a security issue, but it also doesn't work because the callback URI has to be static.
So I decided to solve the problem with session cookies. Now i save a cookie with a session id and the userID when the user first enters the page after logging in.
If the user comes back to the site after the oAuth2 authentication, I use the session cookie that is cached.