CODEWITHSUNDEEP
validationspring-bootspring-4
sbrattla
sbrattla

Reputation: 5386

Why does my ResponseEntityExceptionHandler never get invoked?

I've got a simple @RestController. My ultimate goal is to be able to validate if an incoming @QueryParam String id is an UUID. That part works, but the exception being thrown by the IsValidUUIDValidator never goes through my custom ResponseEntityExceptionHandler. I need that to be able to control the output of the errors.

I've read and tried out a range of tutorials and blogs, but no matter what I do validation exceptions never enter GlobalExceptionHandler#handleMethodArgumentNotValid.

Why are validation exceptions never run through handleMethodArgumentValid in my custom ResponseEntityExceptionHandler?

Note! I do see that Spring picks up the GlobalExceptionHandler from a simple log event in the default constructor of that class.

SearchResource

@RestController
@Path("/search")
public class SearchResource extends AbstractResource {

    @GET
    @Path("/suggestions")
    @Produces(MediaType.APPLICATION_XML)
    public Response getSuggestions(@IsValidUUID @QueryParam("territoryId") String territoryId) {

IsValidUUID

@Target({ElementType.TYPE, ElementType.METHOD, ElementType.FIELD, ElementType.PARAMETER})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Constraint(validatedBy = {IsValidUUIDValidator.class})
public @interface IsValidUUID {

    String message() default "Invalid UUID";

    Class<?>[] groups() default {};

    Class<? extends Payload>[] payload() default {};

}

isValidUUIDValidator

public class IsValidUUIDValidator implements ConstraintValidator<IsValidUUID, String> {

    @Override
    public void initialize(IsValidUUID constraintAnnotation) {
    }

    @Override
    public boolean isValid(String value, ConstraintValidatorContext context) {
        if (value == null) {
            return false;
        }

        try {
            UUID.fromString(value);
            return true;

        } catch (Exception e) {
            System.out.println("Invalid!");
            context.disableDefaultConstraintViolation();
            context.buildConstraintViolationWithTemplate("The provided UUID is not valid")
                    .addConstraintViolation();

            return false;
        }

    }

}

GlobalExceptionHandler

@Order(Ordered.HIGHEST_PRECEDENCE)
@ControllerAdvice
public class GlobalExceptionHandler extends ResponseEntityExceptionHandler {

    @Override
    protected ResponseEntity<Object> handleMethodArgumentNotValid(MethodArgumentNotValidException ex, HttpHeaders headers, HttpStatus status, WebRequest request) {
        System.out.println("This method never gets invoked");
        return super.handleMethodArgumentNotValid(ex, headers, status, request); //To change body of generated methods, choose Tools | Templates.
    }

}

Upvotes: 0

Views: 1379

Answers (1)

Brian Clozel
Brian Clozel

Reputation: 59211

ResponseEntityExceptionHandler is a Spring MVC concept and only applies to Spring Controllers. From the look of it, your application is using Jersey. This won't apply here. You need to use the appropriate infrastructure for that in Jersey.

Upvotes: 1

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