android - Retrofit2 多部分上传图像和其他数据

Question

ApiServices apiServices = 
RetrofitInstance.getRetrofitInstance().create(ApiServices.class);
MultipartBody.Part body = null;
File file = new File(mFilePath);
RequestBody data = RequestBody.create(MediaType.parse(“image/*“), file);

body = MultipartBody.Part.createFormData(“image”, file.getName(), data);
RequestBody description = 
RequestBody.create(MediaType.parse(“text/plain”),“Hello multipart”);
RequestBody sports_id = RequestBody.create(MediaType.parse(“text/plain”),“2”);
RequestBody location = RequestBody.create(MediaType.parse(“text/plain”), “New Delhi”);
String auth_token =  ((MainActivity)getActivity()).appSharedPreference.getAuthToken() ;

Call<JsonElement> call = apiservices.postMoment(auth_token , description, sports_id, location, body) ;
call.enqueue(new Callback<JsonElement>() {
       @Override
       public void onResponse(retrofit2.Call<JsonElement> call, Response<JsonElement> response) {
           Log.e(TAG , “response: “+response.toString());
       }

       @Override
       public void onFailure(retrofit2.Call<JsonElement> call, Throwable t) {
           Log.e(TAG , “error: “+t.getMessage());
       }
   });

API接口(interface):

@Multipart
@POST("/moments")
Call<JsonElement> postMoment(
    @Header("X-User-Token")String access_token,
    @Part("description") RequestBody description,
    @Part("sport_id") RequestBody sport_id,
    @Part("location") RequestBody location
    @Part MultipartBody.Part image,

);

但是，我要如何将所有这些参数封装到一个“时刻”中。就像我们在创建 Json 对象时所做的那样

{
   moment : 
        
{  “description” : “<Description string>”  , 
    “sports_id”: “<sports_id>” ,
    “location”:   “<location>”
    “image”:”<image>”
}

我对api接口(interface)的请求应该是这样的:

Call<JsonElement> call = apiservices.postMoment(auth_token, single_parameter) ;

在那个单一的参数中，所有的字段都被封装了。 我试过 Map 但无法将整个数据组合成一个名为“moment”的字符串。

如有任何帮助，我们将不胜感激。 谢谢

Answer 1

请试试这个，你可以为你的请求创建 pojo 类

@POST("/moments")
Call<JsonElement> postMoment(
    @Header("X-User-Token")String access_token,
    @Body RequestMoment moment,
);

界面

public class RequestMoment {
    public Moment moment;
    public class Moment {
        public Moment(RequestBody description, RequestBody sport_id, 
                      RequestBody location, MultipartBody.Part image){
            this.description = description;
            this.sport_id = sport_id;
            this.location = location;
            this.image = image;
        }
        public RequestBody description;
        public RequestBody sport_id;
        public RequestBody location;
        public MultipartBody.Part image;
    }
}

API调用

Moment moment = new Moment(description, sports_id, location, body);
Call<JsonElement> call = apiservices.postMoment(auth_token, moment);