http://www.dropwizard.io/2.0.18/dropwizard-bom/dropwizard-dependencies/dropwizard-parent/dropwizard-jersey: Dropwizard is a Java framework for developing ops-friendly, high-performance, RESTful web applications.
  • Coda Hale
  • Nick Telford
  • Graham O'Regan
  • Ryan Kennedy
  • Camille Fournier
  • Carlo Barbara
  • Matt Veitas
  • Ryan Tenney
  • Jochen Schalanda
  • Glenn McAllister
  • Nick Babcock
  • Justin Plock
  • Artem Prigoda 
package io.dropwizard.jersey.jackson;

import com.fasterxml.jackson.core.JsonGenerationException;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.exc.InvalidDefinitionException;
import io.dropwizard.jersey.errors.ErrorMessage;
import io.dropwizard.jersey.errors.LoggingExceptionMapper;
import org.slf4j.LoggerFactory;

import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.ext.Provider;

@Provider
public class JsonProcessingExceptionMapper extends LoggingExceptionMapper<JsonProcessingException> {
    private final boolean showDetails;

    public JsonProcessingExceptionMapper() {
        this(false);
    }

    public JsonProcessingExceptionMapper(boolean showDetails) {
        super(LoggerFactory.getLogger(JsonProcessingExceptionMapper.class));
        this.showDetails = showDetails;
    }

    public boolean isShowDetails() {
        return showDetails;
    }

    @Override
    public Response toResponse(JsonProcessingException exception) {
        /*
         * If the error is in the JSON generation or an invalid definition, it's a server error.
         */
        if (exception instanceof JsonGenerationException || exception instanceof InvalidDefinitionException) {
            return super.toResponse(exception); // LoggingExceptionMapper will log exception
        }

        /*
         * Otherwise, it's those pesky users.
         */
        logger.debug("Unable to process JSON", exception);

        final String message = exception.getOriginalMessage();
        final ErrorMessage errorMessage = new ErrorMessage(Response.Status.BAD_REQUEST.getStatusCode(),
                "Unable to process JSON", showDetails ? message : null);
        return Response.status(Response.Status.BAD_REQUEST)
                .type(MediaType.APPLICATION_JSON_TYPE)
                .entity(errorMessage)
                .build();
    }
}