implementing Java 17 and Spring Security OAuth2 Resource Server Token Validation
I'm working on a project and hit a roadblock. I'm working with an scenario with token validation in my Spring Boot application that uses Spring Security for an OAuth2 resource server setup. The question occurs specifically when trying to authenticate the JWT tokens issued by my identity provider. I am using Spring Boot 2.6.6 and Spring Security 5.6.0 with Java 17. Despite following the official documentation, my application throws a `Bearer token is invalid` behavior even though the token is correct. Here's how I configured my security settings: ```java @Configuration @EnableWebSecurity public class SecurityConfig extends WebSecurityConfigurerAdapter { @Override protected void configure(HttpSecurity http) throws Exception { http .authorizeRequests() .antMatchers("/api/public/**").permitAll() .anyRequest().authenticated() .and() .oauth2ResourceServer() .jwt(); } } ``` I have also set the public key for JWT validation in my `application.yml`: ```yaml spring: security: oauth2: resourceserver: jwt: jwk-set-uri: https://my-identity-provider/.well-known/jwks.json ``` I verified that the JWK set URI is correct and accessible, but the application logs show `JWT expired` or `JWT signature does not match` intermittently. I suspect it could be related to clock skew or the way tokens are issued. I even tried to adjust the `NBF` and `EXP` claims in the token to accommodate for time differences, but the scenario continues. Is there a recommended way to handle token validation in this scenario or any common pitfalls I might be overlooking? Thanks in advance!