You can quickly and easily learn the basics of authentication and authorization through tutorials using Spring Boot, Spring Security, and JWT.

silvernine

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Spring Boot

JSON Web Token

Spring Boot JWT Tutorial

- Spring Boot 2.5.3, Gradle 7.1.1
- Added @Valid ExceptionHandler (Thank you for the question, Boki. ^^)
I applied it to the sample code below. I think it would be good to refer to it :)
<a href="https://github.com/SilverNine/spring-boot-jwt-tutorial" target="_blank" rel="noopener noreferrer">https://github.com/SilverNine/spring-boot-jwt-tutorial</a>