prerequisites:

• Open Authorization (OAuth)
• OpenID Connect (OIDC)

Code

• code: https://github.com/SpringBootMarcusChiu/oauth-sso-example

Articles

• https://www.baeldung.com/spring-security-openid-connect
• https://www.baeldung.com/sso-spring-security-oauth2
• https://www.baeldung.com/spring-security-5-oauth2-login

Main Articles

• Simple Single Sign-On with Spring Security OAuth2
• OAuth2 (Auth Server + Resource Server + Angular Client)

Other Articles

• OAuth2 for a Spring REST API – Handle the Refresh Token in Angular
• Logout in an OAuth Secured Application
• Using JWT with Spring Security OAuth
• Customizing Themes for Keycloak
• Customizing the Login Page for Keycloak
• Custom User Attributes with Keycloak
• Keycloak User Self-Registration