Send empty body in POST request in Retrofit

Question

My api expects an empty json body ({ }) when making post requests. How do I set this up in Retrofit and Jackson?

I tried passing null, and empty string, and "{}" but could not get this to work.

@POST(my/url)
Call<MyResponse> createPostRequest(@Body Object empty);

How can I set an empty JSON body?

Answer 1

Empty class will do the trick:

class EmptyRequest {
    public static final EmptyRequest INSTANCE = new EmptyRequest();
}

interface My Service {

    @POST("my/url")
    Call<MyResponse> createPostRequest(@Body EmptyRequest request);

}

myService.createPostRequest(EmptyRequest.INSTANCE);