Handle errors from @RestResource [DATAREST-1281]

Jérémie Campari opened DATAREST-1281 and commented

I use @RestResource in my Spring Data Rest web application to generate endpoints. And I would like to custom 404 error on findById() endpoint to add a JSON body to the response.

I'm aware of ControlerAdvice, handler... BUT it doesn't work with RestResource.

After more research in spring source code I find the code below. It seems that if entity is not found, no exception is raised, RestResource just returned a new ResponseEntity>(HttpStatus.NOT_FOUND)). So it seems impossible to handle and customize the Not Found error with RestResource ?

Code from org.springframework.data.rest.webmvc.RepositoryEntityController

    /**
     * <code>GET /{repository}/{id}</code> - Returns a single entity.
     * 
     * @param resourceInformation
     * @param id
     * @return
     * @throws HttpRequestMethodNotSupportedException
     */
    @RequestMapping(value = BASE_MAPPING + "/{id}", method = RequestMethod.GET)
    public ResponseEntity<Resource<?>> getItemResource(RootResourceInformation resourceInformation,
            @BackendId Serializable id, final PersistentEntityResourceAssembler assembler, @RequestHeader HttpHeaders headers)
            throws HttpRequestMethodNotSupportedException {

        return getItemResource(resourceInformation, id).map(it -> {

            PersistentEntity<?, ?> entity = resourceInformation.getPersistentEntity();

            return resourceStatus.getStatusAndHeaders(headers, it, entity).toResponseEntity(//
                    () -> assembler.toFullResource(it));

        }).orElseGet(() -> new ResponseEntity<Resource<?>>(HttpStatus.NOT_FOUND));
    }

Handle and customize errors is a must have from my point of view

Affects: 3.0.9 (Kay SR9)

Reference URL: https://stackoverflow.com/questions/52201934/how-to-handle-exception-from-spring-data-rest-resource?noredirect=1#comment91353608_52201934