JWT and Oauth2 Google Authentication and Authorization with Spring Boot 3 and Spring Security 6 Before startup project set environment variables in your IDE or in your system: Google auth: GOOGLE_CLIENT_ID=your_google_client_id GOOGLE_CLIENT_SECRET=your_google_client_secret Create random values for: TOKEN_SIGNING_KEY=your_random_value_to_protect_tokens Examples Examples of http requests you can find in /resources/auth.http