Spring Boot 3 — Keycloak Admin Client integration

In this story, we’ll explain how to integrate the Keycloak Admin Client SDK in a Spring Boot application.

· Prerequisites
· Overview
∘ What is Keycloak Admin Client?
∘ When to Use It?
· Set Up a Spring Boot REST API
∘ Configure Keycloak Admin Client in Spring Boot
∘ Keycloak Client Config Class
· CRUD operations
∘ Role Management
∘ User Management
· Test the REST APIs
· Conclusion
· References

Prerequisites

This is the list of all the prerequisites:

• Spring Boot 3+
• Maven 3.6.3
• Java 21
• Postman / insomnia or any other API testing tool.
• A ready-to-use Keycloak server with one realm and one client.

This story will use the same setup (realm and client) as used in our previous story: