How to POST raw whole JSON in the body of a Retrofit request?

Question

This question may have been asked before but no it was not definitively answered. How exactly does one post raw whole JSON inside the body of a Retrofit request?

See

Answer 1

Add ScalarsConverterFactory to retrofit:

in gradle:

implementation'com.squareup.retrofit2:converter-scalars:2.5.0'

your retrofit:

retrofit = new Retrofit.Builder()
            .baseUrl(WEB_DOMAIN_MAIN)
            .addConverterFactory(ScalarsConverterFactory.create())
            .addConverterFactory(GsonConverterFactory.create(gson))
            .build();

change your call interface @Body parameter to String, don't forget to add @Headers("Content-Type: application/json"):

@Headers("Content-Type: application/json")
@POST("/api/getUsers")
Call> getUsers(@Body String rawJsonString);

now you can post raw json.