retrofit 2.0 how to print the full json response?

I am moving from Volley to Retrofit currently version 2.0.

How to print the the full json response code ?

includes:

compile 'com.squareup.retrofit:converter-gson:2.0.0-beta2'
compile 'com.squareup.retrofit:retrofit:2.0.0-beta2'

RestClient:

OkHttpClient client = new OkHttpClient();
        client.interceptors().add(new Interceptor() {
            @Override
            public Response intercept(Interceptor.Chain chain) throws IOException {
                Response response = chain.proceed(chain.request());                
                return response;
            }
        });


        Gson gson = new GsonBuilder()
                .setDateFormat("yyyy'-'MM'-'dd'T'HH':'mm':'ss'.'SSS'Z'")
                .create();


        Retrofit retrofit = new Retrofit.Builder()
                .baseUrl(ROOT)
                .addConverterFactory(GsonConverterFactory.create(gson))
                .client(client)
                .build();

        REST_CLIENT = retrofit.create(APIService.class);

APIService:

   @GET("my/json")
    Call<Model> getFeed();

In Activity - Calling API:

Call<Model> call = RestClient.get().getFeed();
call.enqueue(new Callback<Model>() {
    @Override
    public void onResponse(Response<Model> response, Retrofit retrofit) {

        Log.w("2.0 getFeed > response.raw() => ", response.raw().toString());//DONT WORK
        Log.w("2.0 getFeed > retrofit => ", retrofit.toString());//DONT WORK
        Log.w("2.0 getFeed > body => ", response.body().toString()); //DONT WORK
        Log.w("2.0 getFeed > getStatus => ", response.body().getStatus());

    }

    @Override
    public void onFailure(Throwable t) {
        t.printStackTrace();
        Log.e("2.0 getFeed > onFailure => ", t.toString());
    }
});

Solution 1:

To print the full response in json:

Log.w("2.0 getFeed > Full json res wrapped in gson => ",new Gson().toJson(response));

If you'd like to have pretty print feature, use:

Log.w("2.0 getFeed > Full json res wrapped in pretty printed gson => ",new GsonBuilder().setPrettyPrinting().create().toJson(response));

Note that this prints the deserialized data (not raw response as returned from server). To get the raw response, you may use one of these:

1. Use HttpLoggingInterceptor see: https://stackoverflow.com/a/33256827/2267723 or have your own version of interceptor
2. Use http debugging tools such Stetho. see: http://facebook.github.io/stetho/ or Charles Web Debugging Proxy. see: https://www.charlesproxy.com

Solution 2:

Actually Square already create a class just for this, just add

HttpLoggingInterceptor interceptor = new HttpLoggingInterceptor();
interceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
OkHttpClient client = new OkHttpClient.Builder()
                .addInterceptor(interceptor).build();

And, in Retrofit

Retrofit retrofit = new Retrofit.Builder()
            .client(client)               
            .baseUrl("https://yourapi.com/api/")
            .build();

The interceptor class is in maven central

compile 'com.squareup.okhttp3:logging-interceptor:3.5.0'

You can set the logging level in HttpLoggingInterceptor class. BODY is the verbose one (it print everything to the Body). Further information is available on OkHttp github

Caution!

Don't forget to remove Interceptors (or change Logging Level to NONE) in production! Otherwise people will be able to see your request and response on Log Cat.

Solution 3:

Plug in the following interceptor class like this

OkHttpClient client = new OkHttpClient();
        client.interceptors().add(new LoggingInterceptor());

//////Interceptor class

public static class LoggingInterceptor implements Interceptor {
        @Override
        public com.squareup.okhttp.Response intercept(Chain chain) throws IOException {
            Log.i("LoggingInterceptor","inside intercept callback");
            Request request = chain.request();
            long t1 = System.nanoTime();
            String requestLog = String.format("Sending request %s on %s%n%s",
                    request.url(), chain.connection(), request.headers());
            if(request.method().compareToIgnoreCase("post")==0){
                requestLog ="\n"+requestLog+"\n"+bodyToString(request);
            }
            Log.d("TAG","request"+"\n"+requestLog);
            com.squareup.okhttp.Response response = chain.proceed(request);
            long t2 = System.nanoTime();

            String responseLog = String.format("Received response for %s in %.1fms%n%s",
                    response.request().url(), (t2 - t1) / 1e6d, response.headers());

            String bodyString = response.body().string();

            Log.d("TAG","response only"+"\n"+bodyString);

            Log.d("TAG","response"+"\n"+responseLog+"\n"+bodyString);

            return response.newBuilder()
                    .body(ResponseBody.create(response.body().contentType(), bodyString))
                    .build();

        }


public static String bodyToString(final Request request) {
    try {
        final Request copy = request.newBuilder().build();
        final Buffer buffer = new Buffer();
        copy.body().writeTo(buffer);
        return buffer.readUtf8();
    } catch (final IOException e) {
        return "did not work";
    }
}`

Courtesy: https://github.com/square/retrofit/issues/1072#