JAX/Jersey Custom error code in Response

Question

In Jersey, how can we \'replace\' the status string associated with a known status code?

e.g.

return Response.status(401).build();

Answer 1

I'm not sure JSR 339: JAX-RS 2.0: The Java API for RESTful Web Services already covered this or not.

You might have to extend the Response.StatusType for this.

public abstract class AbstractStatusType implements StatusType {

    public AbstractStatusType(final Family family, final int statusCode,
                              final String reasonPhrase) {
        super();

        this.family = family;
        this.statusCode = statusCode;
        this.reasonPhrase = reasonPhrase;
    }

    protected AbstractStatusType(final Status status,
                                 final String reasonPhrase) {
        this(status.getFamily(), status.getStatusCode(), reasonPhrase);
    }

    @Override
    public Family getFamily() { return family; }

    @Override
    public String getReasonPhrase() { return reasonPhrase; }

    @Override
    public int getStatusCode() { return statusCode; }

    public ResponseBuilder responseBuilder() { return Response.status(this); }

    public Response build() { return responseBuilder().build(); }

    public WebApplicationException except() {
        return new WebApplicationException(build());
    }

    private final Family family;
    private final int statusCode;
    private final String reasonPhrase;
}

And here are some extended statust types.

public class BadRequest400 extends AbstractStatusType {

    public BadRequest400(final String reasonPhrase) {
        super(Status.BAD_REQUEST, reasonPhrase);
    }
}

public class NotFound404 extends AbstractStatusType {

    public NotFound404(final String reasonPhrase) {
        super(Status.NOT_FOUND, reasonPhrase);
    }
}

This is how I do.

@POST
public Response create(final MyEntity entity) {

    throw new BadRequest400("bad ass").except();
}

@GET
public MyEntity read(@QueryParam("id") final long id) {

    throw new NotFound404("ass ignorant").except();
}

// Disclaimer
// I'm not a native English speaker.
// I don't know what 'bad ass' or 'ass ignorant' means.