Simple Spring Boot Test Application using Keycloak as IdP

Usage

1. Install required packages:

sudo apt-get -y install maven openjdk-25-jre-headless

2. In your Keycloak realm of choice, create an OIDC client

3. Edit application.properties

   • In spring.security.oauth2.client.provider.external, modify issuer-uri, client-name, client-id and client-secret.

4. Build and run the test application:

mvn clean spring-boot:run

Author, Copyright and License Information

Note: The code in this example is heavily based on Muhammad Edwin's blog article "How to integrate Spring Boot 3, Spring Security, and Keycloak" and the accompanying GIT repository:

• https://developers.redhat.com/articles/2023/07/24/how-integrate-spring-boot-3-spring-security-and-keycloak
• https://github.com/edwin/spring-3-keycloak

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.