Answer by Andreas Rusch

Andreas Rusch — Mon, 16 Mar 2020 09:28:01 -0400

We added support for @Provider for Ivy projects with version 7.0.13.

If you can't upgrade I would say your only other option is to add a try-catch to each API and handle the conversion there, probably in a general ExceptionHandler class. The try-catch could be handled in a Lambda expression:

@GET
@Path("/{entryNo}")
@Produces(MediaType.APPLICATION_JSON)
public Response getPerson(@PathParam("entryNo") int entryNo) {
  return ErrorHandler.withExceptionHandling( () -> {
      UUID personId = new ArrayList<>(persons.keySet()).get(entryNo);
      return Response.status(Status.OK)
              .entity(persons.get(personId))
              .build();
  });
}

And with ErrorHandler:

public class ErrorHandler {
  public static Response withExceptionHandling(Callable<Response> restCall) {
      try {
        return restCall.call();
      }
      catch (RecordNotFoundException ex)
      {
        ExportingErrorResponse response = new ExportingErrorResponse(Status.NOT_FOUND, ex.getMessage());
        return Response.status(response.getStatusCode()).entity(response).type(MediaType.APPLICATION_JSON).build();
      } catch (Exception e) {
        return Response.status(Status.INTERNAL_SERVER_ERROR).build();
    }    
  }
}

Or something like that.

Answers to: Can not add @Provider to handle an specific exception for rest api

Answer by Andreas Rusch