In my Spring boot project, we are parsing JWT token to get the claims & throwing InsufficientAuthenticationException as follows.

public String getIssuerClaim(String accessToken) throws AuthenticationException {

    JWSObject jwsObject;
    JWTClaimsSet claims;
    try {
      jwsObject = JWSObject.parse(accessToken);
      claims = JWTClaimsSet.parse(jwsObject.getPayload().toJSONObject());
    } catch (java.text.ParseException e) {
      log.error("Token parsing exception. " + e.getMessage());
      throw new InsufficientAuthenticationException("Invalid Token: " + e.getMessage());
    }
    return (String) claims.getClaim("SUB");
  }

If there is a request arrived with null authorization header, this will throw this exception as it couldn’t parse the token which shows the Spring boot’s default internal server error.

I want to grab this error as part of my global exception handler and it is not getting inside the method at all.

@Order(Ordered.HIGHEST_PRECEDENCE)
@RestControllerAdvice
@Slf4j
public class GlobalExceptionHandler {

    @ExceptionHandler(InsufficientAuthenticationException.class)
    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    protected ResponseEntity < ErrorPayload > handleInsufficientAuthenticationException(
        InsufficientAuthenticationException exception) {
        ErrorPayload errorMessage = new ErrorPayload(HttpStatus.INTERNAL_SERVER_ERROR.value(), exception.getMessage());
        log.error(errorMessage.toString(), exception);
        return new ResponseEntity < > (errorMessage, getHttpHeaders(), HttpStatus.INTERNAL_SERVER_ERROR);
    }
}

I have tried with both @RestControllerAdvice & @ControllerAdvice. No luck yet.

I have updated the application.yaml as follows,

server:
  error:
    whitelabel:
      enabled : false
    error:
        path: /error

Tried adding my custom error handler

import jakarta.servlet.RequestDispatcher;
import jakarta.servlet.http.HttpServletRequest;
import org.springframework.boot.web.servlet.error.ErrorController;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@Controller
public class MyErrorController implements ErrorController {

 

  @RequestMapping("/error")
  public String handleError(HttpServletRequest request) {
    Object status = request.getAttribute(RequestDispatcher.ERROR_STATUS_CODE);

    if (status != null) {
      int statusCode = Integer.parseInt(status.toString());

      if (statusCode == HttpStatus.NOT_FOUND.value()) {
        return "error-404";
      } else if (statusCode == HttpStatus.INTERNAL_SERVER_ERROR.value()) {
        return "error-500";
      }
    }
    return "error";
  }
}

I kept breakpoint in all these classes and nowhere it is hitting. 🙁
Any suggestions?