改造2.0多

Question

我有工作OkHttp MultiPartrequest：

multi = new MultipartBody.Builder() 
       .setType(MultipartBody.FORM) 
       .addFormDataPart("email", m) 
       .addFormDataPart("password", p) 
       .addFormDataPart("user_name", n) 
       .addFormDataPart("user_phone", phone) 
       .addFormDataPart("photo", "avatar.jpg", RequestBody.create(MediaType.parse("image/jpg"), imgToArray(bmpChosenPic))) 
       //.addFormDataPart("photo", "1") 
       .build(); 
     request = new Request.Builder() 
       .url(Utils.TEST_BASE_URL + "" + REG_URL) 
       .post(multi) 
       .build(); 
     client.newCall(request).enqueue(new Callback()... 

现在我尽量让使用Retrofit 2.0相同的功能。这里的服务：

@Multipart 
@POST("/api/v1/auth/register") 
Call<Registration> registration (@Part("email") RequestBody email, 
            @Part("password") RequestBody password, 
            @Part("user_name") RequestBody userName, 
            @Part("photo") RequestBody url, 
            @Part("phone") RequestBody phone); 

所以根据这个interface我尽量让Call：

RequestBody photoR = RequestBody.create(MediaType.parse("image/jpg"), imgToArray(bmp)); 
    RequestBody nameR = RequestBody.create(MediaType.parse("text/plain"), name); 
    RequestBody emailR = RequestBody.create(MediaType.parse("text/plain"), email); 
    RequestBody passR = RequestBody.create(MediaType.parse("text/plain"), pass); 
    RequestBody phone = RequestBody.create(MediaType.parse("text/plain"), ""); 
    RegistaionI service = ServiceGenerator.createService(RegistaionI.class); 
    retrofit2.Call<Registration> call = service.registration(
      emailR, 
      passR, 
      nameR, 
      photoR, 
      phone); 
    call.enqueue(new retrofit2.Callback<Registration>() { 
     @Override 
     public void onResponse(retrofit2.Call<Registration> call, retrofit2.Response<Registration> response) { 
      RegistrationData data = response.body().getData(); 
      System.out.println(data.getId()); 
     } 

     @Override 
     public void onFailure(retrofit2.Call<Registration> call, Throwable t) { 

     } 
    }); 

但不幸的是，我在这一行获得NPE：

RegistrationData data = response.body().getData(); 

所以我假设，我的代码中有些东西是错误的。我已阅读了SOF和GitHub翻新分支的相关主题，但未找到工作解决方案。请帮忙。

Answer 1

我也有这么多的麻烦使这种请求的工作。我最终以此来上传图片或视频：

@Multipart 
@POST(Constants.URL_UPLOAD) 
Call<ResponseBody> upload(@PartMap Map<String, RequestBody> params); 

而且方法API调用

private String uploadFile(String path, final String type) throws IOException, JSONException { 

    Map<String, RequestBody> map = new HashMap<>(); 
    map.put("Id", Utils.toRequestBody("0")); 
    map.put("Name", Utils.toRequestBody("example")); 
    String types = path.substring((path.length() - 3), (path.length())); 

    if (path != null) { 
     File file2 = new File(path); 
     RequestBody fileBody = RequestBody.create(MediaType.parse(type), file2); 
     map.put("file\"; filename=\"cobalt." + types + "\"", fileBody); 
    } 

    Call<ResponseBody> call = cobaltServices.upload(map); 
    ResponseBody response = call.execute().body(); 

    return RESULT_OK; 
}