I have few spring boot microservices, and for some of the I want to define a custom security starter to utilise the same security filter chain. I did the setup on one service, everything works as expected, but when I want to move it in my common auth project, the beans are correctly initiated, but the authentication does not work anymore. In security started I need two beans defined as follows:

 @Configuration
public class SecurityConfig {

    @Bean
    public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
        return http.csrf(AbstractHttpConfigurer::disable)
                .authorizeHttpRequests(auth -> auth.anyRequest().authenticated())
                .oauth2ResourceServer(
                        oauth2 -> oauth2.jwt(jwt -> jwt.jwtAuthenticationConverter(JwtUtil::createJwtUser)))
                .build();
    }

    @Bean
    public JwtDecoder jwtDecoder() {
        return token -> {
            try {
                JWT jwt = JWTParser.parse(token);
                var headers = jwt.getHeader().toJSONObject();
                var claims = jwt.getJWTClaimsSet().getClaims();
                var expiresAt = jwt.getJWTClaimsSet().getExpirationTime().toInstant();
                var createdAt = jwt.getJWTClaimsSet().getIssueTime().toInstant();

                return new Jwt(token, createdAt, expiresAt, headers, claims);
            } catch (ParseException e) {
                throw new RuntimeException(e);
            }
        };
    }
}

I move this exact class into my common auth library, I changed @Configuration with @AutoConfiguration and defined the config bean in my META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports file but it’s not working properly.