![]() ![]() Building the application without security To get an overview of all of them, you can checkout out this page. There are many more properties you can configure here to fit your needs. We use the master realm, which is the default Keycloak realm. Usually, a frontend application handles the login and gets the bearer token, then sends requests to the backend application by providing the token in the HTTP headers. With this type of client, we rely on other clients to execute the authentication flow and get the bearer token. This means that this application is not participating in the login flow, and it expects all received requests to contain the authentication bearer token. server: port: 9000 spring: datasource: url: jdbc:h2:mem:mydb username: mozen password: password keycloak: realm: master auth-server-url: resource: spring-app bearer-only: true The configuration for the adapter is placed in the application.yml file. This adapter provides an implementation to integrate Keycloak with Spring Security. On top of that, we also add the Keycloak Spring Boot Adapter dependency to our pom.xml. ![]() The security dependency to get access to Spring Security.Lombok to generate snippets of code through annotation and avoid any boilerplate code.This type of database is suited for small toy projects such as this one, but it should not be used for any serious project that will be shipped to production at some point the h2 library to provide an easy-to-use in-memory embedded database.the spring data JPA for the data access layer, which uses hibernate as the default Object Relational Mapping tool.spring init -dependencies=web,data-jpa,h2,lombok,security spring-boot-keycloak Once you have installed the CLI, execute this command to generate the project with the necessary dependencies. To have a walkthrough of how to set up the CLI on your own machine, follow this guide. In this tutorial, We are using the spring CLI via SDKman, but it can quickly be done using the web UI or directly through your IDEA. The first step is to generate the spring boot project using Spring Initializr. The only requirement is to have a running Keycloak instance. Of course, you can set up your Keycloak instance however you want. In a previous post, we have already learned how to set up Keycloak using Docker, and we are going to use this setup as a starting point. ![]() One of them is Keycloak, an open-source identity, and management solution developed by Red Hat. In this blog post, we are going to learn how to add authentication to a Spring Boot REST API.Īnd instead of building a brittle custom implementation that might contain security issues, it is better to rely on battle-tested solutions. That is what Security in Depth is, and one part is to secure our REST API. But in today’s age, the more secure layers there are, the safer it is. Security is often overlooked and is seen as a burden that goes against development velocity. ![]()
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