How to get user id after login with google oauth [duplicate]

Answer 1

You can do one of the following:

1. perform a GET on www.googleapis.com/oauth2/v1/userinfo
2. decode the id_token that you get in the initial request, using a JWT library

I'd recommend the latter as it is more robust and doesn't require an extra call.

See this thread for more info: How to identify a Google OAuth2 user?