Handle Security exceptions in Spring Boot Resource Server

Question

How can I get my custom ResponseEntityExceptionHandler or OAuth2ExceptionRenderer to handle Exceptions raised by Spring security on a pure resource ser

Answer 1

We can use this security handler to pass the handler to spring mvc @ControllerAdvice

@Component
public class AuthExceptionHandler implements AuthenticationEntryPoint, AccessDeniedHandler {

    private static final Logger LOG = LoggerFactory.getLogger(AuthExceptionHandler.class);

    private final HandlerExceptionResolver resolver;

    @Autowired
    public AuthExceptionHandler(@Qualifier("handlerExceptionResolver") final HandlerExceptionResolver resolver) {
        this.resolver = resolver;
    }

    @Override
    public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException authException) throws IOException, ServletException {
        LOG.error("Responding with unauthorized error. Message - {}", authException.getMessage());
        resolver.resolveException(request, response, null, authException);
    }

    @Override
    public void handle(HttpServletRequest request, HttpServletResponse response, AccessDeniedException accessDeniedException) throws IOException, ServletException {
        LOG.error("Responding with access denied error. Message - {}", accessDeniedException.getMessage());
        resolver.resolveException(request, response, null, accessDeniedException);
    }
}

Then define the exception by using @ControllerAdvice so that we can manage the global exception handler in one place..