Android使用 Retrofit 2.X 上传多文件和多表单示例

retrofit post请求上传表单和文件最重要的就是就是去构建RequestBody，今天为大家带来一种超级简单的上传方式

Body方式：

1、Retrofit接口RetrofitInterface

 @POST(URLConstant.URL_PATH)
  Flowable upload(@Body RequestBody Body);

2、Retrofit的配置

private static RetrofitInterface getRetrofitInterface(String baseUrl) {
    if (retrofitInterface == null) {
      Retrofit retrofit = new Retrofit.Builder()
   .baseUrl(baseUrl)
   .addConverterFactory(GsonConverterFactory.create())
// .addConverterFactory(ScalarsConverterFactory.create()) //string
   .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
   .build();
      retrofitInterface = retrofit.create(RetrofitInterface.class);
    }
    return retrofitInterface;
  }

3、构建body

 public static Flowable upload(List fileList) {
    //构建body
//addFormDataPart()第一个参数为表单名字，这是和后台约定好的
    MultipartBody.Builder builder = new MultipartBody.Builder()
 .setType(MultipartBody.FORM)
 .addFormDataPart("username", "name") 
 .addFormDataPart("phone", "phone")
   //注意，file是后台约定的参数，如果是多图，file[]，如果是单张图片，file就行
    for (File file : fileList) {
      //这里上传的是多图
      builder.addFormDataPart("file[]", file.getName(), RequestBody.create(MediaType.parse("image/*"), file));
    }
    RequestBody requestBody = builder.build();
    return getRetrofitInterface(URLConstant.URL_base).upload(requestBody);
  }

4、开始执行上传

HttpUtils.upload(mUploadFileList)
 .subscribeOn(Schedulers.io())
 .observeOn(AndroidSchedulers.mainThread())
 .subscribe(new DisposableSubscriber() {
   @Override
   public void onNext(UploadImgBean uploadImgBean) {
     Log.i(TAG, "onNext: " ); 
     }
   }

   @Override
   public void onError(Throwable throwable) {
     Log.i(TAG, "onError: --->" + throwable.getMessage());
   }

   @Override
   public void onComplete() {
     Log.i(TAG, "onComplete: ");
   }
 });

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。