Retrofit2 error java.io.EOFException: End of input at line 1 column 1

Question

I called PATCH web service using Retrofit2 but onResponse is not called and the onFailure is called Despite of

Answer 1

Thank you very much.

Api

@FormUrlEncoded
@POST("/rebu/insertusuario.php")
Call<Void> insertLogin(
        @Field("email") String email,
        @Field("senha") String senha,
        @Field("codCondutor") Long codCondutor
);

Class:

Call call = service.insertLogin(login.getEmail(), login.getSenha(), login.getCodCondutor());

Answer 2

just return void instead, if the body is empty

@PATCH("alerts/{alert_id}/accept") Call<Void> accept_invited_alerts(@Header("X-Api-Token") String api_token, @Path("alert_id") int alert_id);

for retrofit with Rx java you can use something like this

@PATCH("alerts/{alert_id}/accept") Observable<Response<Void>> accept_invited_alerts(@Header("X-Api-Token") String api_token, @Path("alert_id") int alert_id);

Answer 3

You can create NullOnEmptyConverterFactory.class :

import java.io.IOException;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

import okhttp3.ResponseBody;
import retrofit2.Converter;
import retrofit2.Retrofit;


public class NullOnEmptyConverterFactory extends Converter.Factory {

    @Override
    public Converter<ResponseBody, ?> responseBodyConverter(Type type, Annotation[] annotations, Retrofit retrofit) {
        final Converter<ResponseBody, ?> delegate = retrofit.nextResponseBodyConverter(this, type, annotations);
        return new Converter<ResponseBody, Object>() {
            @Override
            public Object convert(ResponseBody body) throws IOException {
                if (body.contentLength() == 0) return null;
                return delegate.convert(body);               
            }
        };
    }
}

and add to code create. For ex:

 UploadImageNghiemThuApi uploadService = new Retrofit.Builder()
            .baseUrl(Config.URL+"/")
            .client(okHttpClient)
            // -----add here-------
            .addConverterFactory(new NullOnEmptyConverterFactory())
            //---------------------
            .addConverterFactory(GsonConverterFactory.create())
            .build()
            .create(UploadImageNghiemThuApi.class);

I hope it can help your problem. Thanks!