Find Jersey Parent Path

Question

I have a Jersey 2.x endpoint that a user can POST to to update a specific property on a parent resource. On success, I would like to return a 303 status and specify the path to the parent resource in the Location header.

eg. if the user POSTed to:

http://example.com/api/v1/resource/field

then set the location header in the response to:

http://example.com/api/v1/resource

It seems like there should be a straightforward way to do this with UriInfo/UriBuilder, but I'm at a loss as to how to do it without hard-coding something that's likely to break later on.

Answer 1

Get the base URI (which assuming is http://example.com/api) from UriInfo.getBaseUriBuilder(), then append the XxxResource path with builder.path(XxxResource.class).

Then from the built URI, return Response.seeOther(uri).build();. Complete example:

@Path("/v1/resource")
public class Resource {

    @GET
    public Response getResource() {
        return Response.ok("Hello Redirects!").build();
    }

    @POST
    @Path("/field")
    public Response getResource(@Context UriInfo uriInfo) {
        URI resourceBaseUri = uriInfo.getBaseUriBuilder()
            .path(Resource.class)
            .build();
        return Response.seeOther(resourceBaseUri).build();
    }
}