Every serious backend eventually has to answer two questions for every request: who is this? and what are they allowed to do? You can build login, password reset, token issuing, SSO and role management yourself, but it is hard, slow and very easy to get wrong. Or you can hand the whole job to Keycloak and keep your Spring Boot code focused on the business logic. This article is the written companion to my full Keycloak + Spring Boot course on YouTube. We go from zero to a working, role-secured REST API: install Keycloak, set up a realm, client, roles and users, move Keycloak off its default H2 database onto PostgreSQL, test the OpenID Connect endpoints in Postman, and finally protect Spring Boot endpoints with JWTs and Spring Security. Source code: All the code is on GitHub: sprashantofficial/KeycloakSpringBootApp . The complete course is also on Udemy . What We Are Building Two servers run side by side: Keycloak on localhost:8080 and our Spring Boot API on localhost:8082 . ...
Every serious backend eventually has to answer two questions for every request: who is this? and what are they allowed to do? You can build login, password reset, token issuing, SSO and role management yourself, but it is hard, slow and very easy to get wrong. Or you can hand the whole job to Keycloak and keep your Spring Boot code focused on the business logic. This article is the written companion to my full Keycloak + Spring Boot course on YouTube. We go from zero to a working, role-secured REST API: install Keycloak, set up a realm, client, roles and users, move Keycloak off its default H2 database onto PostgreSQL, test the OpenID Connect endpoints in Postman, and finally protect Spring Boot endpoints with JWTs and Spring Security. Source code: All the code is on GitHub: sprashantofficial/KeycloakSpringBootApp . The complete course is also on Udemy . What We Are Building Two servers run side by side: Keycloak on localhost:8080 and our Spring Boot API on localhost:8082 . ...
