Google Oauth2, retrieve custom user parameters

Question

I just set-up the Oauth2 flow by means of SpringBoot 3.x framework and Google.

Using the

securityBuilder.oauth2Login(oauth2 -> oauth2.successHandler(authenticationSuccessHandler));

I'm able to call a custom callback method and retrieve the standard attributes from the Oauth2User object:

@Override
    public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication)
            throws IOException, ServletException {

        log.info("Oauth2 authentication successful");
        OAuth2User oAuth2User = (OAuth2User) authentication.getPrincipal();

The OAuth2User object contains the standard "claims" : sub, name, family_name, email and so on and so forth.

Through the google admin console I added a custom attribute to my Google users but I don't see it within the OAuth2User attributes retrieved by SpringBoot (I suppose it is using the https://www.googleapis.com/oauth2/v3/userinfo API call).

What I'm missing ?

Thanks in advance, Mauro.

Answer 1

Springboot dont provide all of these attributes for you, you can config what you want to see in the /userinfo by this. By default, it will use OAuth2UserService for the response entity

.oauth2Login(oauth2 -> oauth2.userInfoEndpoint())