In preparation for a potential customer project, I had to refresh my knowledge of Angular. The best way to do that is to create a small demo application. I used Angular 15 with Spring Boot 3 and JWT to secure the REST API. Often an authorization server like Keycloak is used for authorization and token generation. However, I tried to keep the example as simple as possible and generate the JWT as part of the application.

Almost all web application frameworks include their security-relevant functions and provide the respective interfaces to external security solutions. As a Java-based full-stack framework, Vaadin is compatible with the most popular Java security solutions.