小编dil*_*lux的帖子

上传单个图像似乎对改造2没有问题.

但是,我无法弄清楚如何同时上传2张图片.

如果遵循文档:http: //square.github.io/retrofit/2.x/retrofit/retrofit2/http/PartMap.html

File file = new File(path, "theimage");
File file2 = new File(path2, "theimage");
RequestBody requestBody = RequestBody.create(MediaType.parse("image/png"), file);
RequestBody requestBody2 = RequestBody.create(MediaType.parse("image/png"), file2);
Map<String, RequestBody> params = new HashMap<>();
params.put("image2", requestBody2 );

Call<ResponseBody> call = service.upload(requestBody, params);
call.enqueue(new Callback<ResponseBody>() {
@Override
public void onResponse(Response<ResponseBody> response, Retrofit retrofit) {
    Log.v("Upload", "success");
}

接口:

public interface FileUploadService {

    @Multipart
    @POST("/upload")
    Call<ResponseBody> upload(
        //@Part("image_logo\"; filename=\"image.png\" ") RequestBody file,
        @Part("file") RequestBody file,
        @PartMap Map<String, RequestBody> params
     //  @Part("description") String …

我以前使用过gson自动转换为pojo的。

但现在我正在尝试使用改造将api结果转换为对象。

只要json已命名对象数组，就没有问题：

例如：

{
    items:[
        {"name":"foo"},
        {"name":"bar"}
    ]
}

public class AnItem {
    String name;
}

public class MyItems {
    List<AnItem> items;
}

public interface MyApi {
    @GET("/itemlist")
    Call<MyItems> loadItems();
}

public boolean onOptionsItemSelected(MenuItem item) {
    Retrofit retrofit = new Retrofit.Builder()
            .baseUrl("https://someurl.com/api")
            .addConverterFactory(GsonConverterFactory.create())
            .build();
    MyApi myApi = retrofit.create(MyApi.class);
    Call<MyApi> call = myApi.loadItems();
    call.enqueue(this);
    return true;
}

@Override
public void onResponse(Response<MyItems> response, Retrofit retrofit) {
    ArrayAdapter<AnItem> adapter = (ArrayAdapter<AnItem>) getListAdapter();
    adapter.clear();
    adapter.addAll(response.body().items);
}

这将自动工作。

但是如果未命名json数组怎么办？

例如：

[
    {"name":"foo"},
    {"name":"bar"}
] …