How to change body in OkHttp Response?

Question

I\'m using retrofit. To catch response i\'m using Interceptor:

OkHttpClient okHttpClient = new OkHttpClient();
okHttpClient.interceptors().add(myinterceptor);
         


        

Answer 1

Here's a tight, complete example of adding an interceptor that modifies JSON to an OkHttpClient. It uses GSON to manage the JSON.

        client.addInterceptor(chain -> {
            final Request request = chain.request();
            final String path = request.url().uri().getPath();
            final Response response = chain.proceed(request);

            String body = response.body().string();
            final JsonElement element = new JsonParser().parse(body);
            if ("/the/endpoint/you/want/to/modify".equals(path)){
                final JsonObject object = element.getAsJsonObject();
                // v v v v v v All this for these lines v v v v v v v
                object.addProperty("some_json_name","some_json_value");
                object.addProperty("existing_property","updated_value");
                object.addProperty("numbers_work_too",1.2);
                // ^ ^ ^ ^ ^ ^ All this for these lines ^ ^ ^ ^ ^ ^ ^
                body = object.toString();
            }
            return response.newBuilder().body(ResponseBody.create(response.body().contentType(), body)).build();
        });