spring-boot-security-jwt

JWT authentication in Spring Boot 3.5.x is implemented using Spring Security 6.x to generate tokens with JJWT and validate Bearer or cookie credentials. This approach enforces role-based and permission-based access control for REST APIs and microservices.

The best way to secure a Spring Boot REST API with JWT tokens is configuring Spring Security 6.x as an OAuth2 resource server. This validates Bearer tokens on protected requests and maps claims to roles for permission-based authorization.

Spring Security 6.x supports both Bearer token and cookie-based JWT authentication for SPA backends. It validates tokens issued upon login using JJWT and integrates with database or OAuth2 identity providers to enforce RBAC access control.

JJWT libraries integrate with Spring Boot 3.5.x to generate and parse JWT tokens for RBAC authorization. Combined with Spring Security 6.x, it validates user roles and permissions to control API access based on token claims.

Configuring Spring Security 6.x as an OAuth2 resource server validates JWT tokens by verifying signatures and mapping claims to authorities. This enables permission-based access control without managing server-side sessions for stateless APIs.

JWT authentication in Spring Boot microservices provides stateless security by validating token signatures on each request, eliminating server-side session storage. This enables horizontal scaling while enforcing RBAC and permission-based access control via token claims.