Spring-boot HttpMediaTypeNotAcceptableException is not getting caught by @ExceptionHandler in same controller

Question

In my spring boot application, I have a controller for post request which produces and consumes JSON request and I have defined @ExceptionHandler for this controller with HttpMediaTypeNotAcceptableException for catching HttpMediaTypeNotAcceptableException(406 status code) exceptions.

Now whenever I call the post request with a wrong header of ACCEPT such as application/pdf, the defined exception does not get called.

I don't want to define ControllerAdvice since I would like to throw a specific error for this controller.

code:

@RestController
@RequestMapping("/school")
public class SchoolCotroller {

    @Autowired
    private SchoolService schoolService;

    @PostMapping(produces = "Application/Json", consumes = "Application/Json")
    @ResponseStatus(HttpStatus.CREATED)
    public School postData(@Valid @RequestBody School school)  {

       return  schoolService.save(school);

    }
 @ExceptionHandler(HttpMediaTypeNotAcceptableException.class)
    String handleMediaTypeNotAcceptable(
            final HttpMediaTypeNotAcceptableException exception,
            final NativeWebRequest request) {
        return "acceptable MIME type:" + MediaType.APPLICATION_JSON_VALUE;
        }
}

curl:

curl --location --request POST 'http://localhost:8080/school' \
--header 'Accept: application/pdf' \
--header 'Content-Type: application/json' \
--data-raw '{
    "studentName":"mayank",
    "course":1,
    "teacher":"e",
    "id":1
}'

So whenever I call this Curl request I get default bad request response with console log as "DefaultHandlerExceptionResolver : Resolved [org.springframework.web.HttpMediaTypeNotAcceptableException: Could not find acceptable representation]" but it does not call the ExceptionHandler method.

Why is it not calling the required ExceptionHandler method?

Ananthapadmanabhan · Accepted Answer · 2020-04-06 09:53:11Z

0

Maybe springboot is having trouble recognizing the consumes and produces type as application/json since you provided it as "Application/Json" at your endpoint. Try the following code :

@RestController
@RequestMapping("/school")
public class SchoolCotroller {

    @Autowired
    private SchoolService schoolService;

    @PostMapping(produces = MediaType.APPLICATION_JSON_VALUE , consumes = MediaType.APPLICATION_JSON_VALUE)
    @ResponseStatus(HttpStatus.CREATED)
    public School postData(@Valid @RequestBody School school)  {

       return  schoolService.save(school);

    }

    @ExceptionHandler(HttpMediaTypeNotAcceptableException.class)
    @ResponseStatus(HttpStatus.NOT_ACCEPTABLE)
    String handleMediaTypeNotAcceptable(
            final HttpMediaTypeNotAcceptableException exception,
            final HttpServletRequest request) {
        return "acceptable MIME type:" + MediaType.APPLICATION_JSON_VALUE;
    }
}

edited Apr 6, 2020 at 9:53

answered Apr 6, 2020 at 7:38

Ananthapadmanabhan

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4 Comments

Mayank Goyal Over a year ago

It still gives the same thing even after changing produces to "MediaType.APPLICATION_JSON_VALUE "

Ananthapadmanabhan Over a year ago

@MayankGoyal I have updated my answer could you please check again with this code.

Mayank Goyal Over a year ago

tried with the above code but no luck. Another interested thing is that if I add @ExceptionHandler(Exception.class) instead of @ExceptionHandler(HttpMediaTypeNotAcceptableException.class) then, also it does not invoke that method either.

Winston Lee Over a year ago

You're missing an @ControllerAdvice

Himanshu Pujari · Accepted Answer · 2023-01-22 06:30:52Z

0

I faced similar issue. I added Content-Type header as MediaType.APPLICATION_JSON_VALUE before throwing the error as HttpStatus.NOT_ACCEPTABLE and it's working.

answered Jan 22, 2023 at 6:30

Himanshu Pujari

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