定義請求方法

@Multipart
@POST(RequestApi.GET_DASH_NAME)
Observable<Message> getXXX( @Part MultipartBody.Part body);

獲取將要上傳的文件并創(chuàng)建MultipartBody.Part對象

  //獲取文件路徑
    String path =   Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS) + File.separator+"2.jpg" ;
    Log.d(TAG, path);
  //獲取路徑對應(yīng)的文件
    File file = new File(path);
    //得到請求體
    RequestBody fileRQ = RequestBody.create(MediaType.parse("image/jpeg"), file);
    //創(chuàng)建MultipartBody.Part對象
    //注意:這個(gè)file是后臺定義的參數(shù)名
    MultipartBody.Part part =MultipartBody.Part.createFormData("file", file.getName(), fileRQ);

請求方法

 RetrofitClient.getApiService().getXXX(part)
            .subscribeOn(Schedulers.io())
            .observeOn(AndroidSchedulers.mainThread())
            .subscribe(new Observer<Message>() {
                @Override
                public void onSubscribe(Disposable d) {
      //訂閱
                    subscribe(d);

                }

                @Override
                public void onNext(Message message) {

                    mView.showLoading();
                    mView.setData(message);
                }

                @Override
                public void onError(Throwable e) {
                    Log.e(TAG,e.getMessage());

                        mView.dismissLoading();
                }

                @Override
                public void onComplete() {
                    mView.dismissLoading();
                }
            });