RBAC Permission Analysis and Spring Security Tutorial with JWT Integration
This comprehensive tutorial explains RBAC concepts and models, demonstrates basic Spring Security setup, shows how to integrate JWT for stateless authentication, covers JSON‑based login, password encryption with BCrypt, and database‑backed authentication, providing full code examples for each step.
The article introduces role‑based access control (RBAC), explains its concepts, model classifications (RBAC0‑RBAC3), permissions, user groups and provides visual mind‑maps.
It then demonstrates a basic Spring Security setup, showing Maven dependency and a simple controller example.
Next, it details how to integrate JWT with Spring Security, including dependency declarations, a JwtUser class, a JwtTokenUtil utility, a JWT authentication filter, a custom UserDetailsService , login service, and the final security configuration.
It also covers JSON‑based login by overriding UsernamePasswordAuthenticationFilter and configuring the custom filter.
Additional sections describe password encryption with BCryptPasswordEncoder and configuring database‑backed authentication.
All code snippets are presented within ... blocks to illustrate each step.
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