OAuth with Google
A guided, end-to-end Google sign-in - the console setup, the real params, the real mistakes.
Take this course in the learning hubLessons
- Sign in with Google: what you actually getTwo different tokens come back, and mixing them up is the classic first mistake.
- Setting it up in Google CloudThe console steps, in order, and the setting that causes most first-attempt failures.
- The Google exchange, step by stepThe real URLs and parameters, walked end to end.
- Never key your users on emailThe design decision that is painful to reverse once you have real users.
- The errors you will actually hitFour Google-specific failures and what each one really means.
- Wiring Sign in with Google into Spring BootFrom an empty project to a working login.
- Account linking and the email trapThe mistake that lets someone take over an account.
- Taking it to productionConsent screen, verification, and what breaks on the day you launch.
- Verifying a Google token yourselfWhen a mobile or SPA client sends you an ID token, what you must check.