Retrofit 2.0 beta1: how to post raw String body

Question

I am looking for some way to post request with raw body with new Retrofit 2.0b1. Something like this:

@POST(\"/token\")
Observable getT         


        

Answer 1

In Retrofit 2.0.0-beta2 you can use RequestBody and ResponseBody to post a body to server using String data and read from server's response body as String.

First you need to declare a method in your RetrofitService:

interface RetrofitService {
    @POST("path")
    Call<ResponseBody> update(@Body RequestBody requestBody);
}

Next you need to create a RequestBody and Call object:

Retrofit retrofit = new Retrofit.Builder().baseUrl("http://somedomain.com").build();
RetrofitService retrofitService = retrofit.create(RetrofitService.class);

String strRequestBody = "body";
RequestBody requestBody = RequestBody.create(MediaType.parse("text/plain"),strRequestBody);
Call<ResponseBody> call = retrofitService.update(requestBody);

And finally make a request and read response body as String:

try {
    Response<ResponseBody> response = call.execute();
    if (response.isSuccess()) {
        String strResponseBody = response.body().string();
    }
} catch (IOException e) {
    // ...
}

Answer 2

You should be registering a converter for your Type when you are building your Retrofit using addConverter(type, converter).

Converter<T> in 2.0 uses similar approach using old Converter in 1.x version.

Your StringConverter should be something like this:

public class StringConverter implements Converter<Object>{


    @Override
    public String fromBody(ResponseBody body) throws IOException {
        return ByteString.read(body.byteStream(), (int) body.contentLength()).utf8();
    }

    @Override
    public RequestBody toBody(Object value) {
        return RequestBody.create(MediaType.parse("text/plain"), value.toString());
    }
}

Notes:

1. ByteString is from Okio library.
2. Mind the Charset in your MediaType