Google Sign-In with Backend Verification Flow Clarification
问题 I've spent hours trawling through various tutorials and articles and am finally giving in to asking. I want to enforce the use of Google Sign-In authentication for all users of my Angular 7 application. However, once Google authentication is complete, I want to first check that the user exists in my back-end DB (PostgreSQL). If they do, then I want to issue a JWT for two purposes: Ensure that future calls to my Spring Boot REST services are only fulfilled for authorized users. Protect my