Jersey Client / JAX-RS and optional (not default) @QueryParam (client side)

Question

I have a RESTful API who\'s document says that a certain query parameter is optional, and does not supply a default argument. So, I can either supply the value or not send it i

Answer 1

You can inject a UriInfo instance (or something else like HttpServletRequest) into your method, and get whatever data you want off of it.

For example

@Path("/endpoint")
@GET
public Response getEndpoint(@Context UriInfo info, @QueryParam("queryA") String queryA) {
  String queryB = info.getQueryParameters().getFirst("queryB");
  if (null != queryB) {
    // do something with it
  }
  ...
}