CODEWITHSUNDEEP
springspring-boot
Ray S
Ray S

Reputation: 629

Spring RestController returning ResponseEntity<byte[]> in case of errors

I have a rest controller in a spring boot service as follows:

Public ResponseEntity getDocContent(String id)

THis controller action produces MediaType.Octet_Stream

I am wondering what to return in case of non Http OK response when I really don’t have a byte array content but a String with error message. I would not want to produce an octet stream in error cases but an error JSon instead

I can have The service produce both octet stream and application/json but my confusion is around the return type of byte array in case of errors in which case I want to generate a Json and not a byte array

Please give me ideas on how to solve this

Upvotes: 2

Views: 2065

Answers (1)

Houssam Badri
Houssam Badri

Reputation: 2509

Add a controllerAdvice to handle the thrown exceptions in the RestContoller.

@ControllerAdvice
public class CustomExceptionHandler extends ResponseEntityExceptionHandler{


    @ExceptionHandler(MyException.class)
    @ResponseStatus(HttpStatus.CONFLICT) //Just an example code
    public ResponseEntity<GeneralMessage> handleGacaException(MyException ex) {
        LOGGER.error(ex.getMessage());
        GeneralMessage errorMessage = new GeneralMessage(ex.getErrorCode().toString(), ex.getErrorMessage());

        return ResponseEntity.status(HttpStatus.CONFLICT).body(errorMessage);
    }


}

Than throw MyException on the RestController.

Upvotes: 1

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