Android:Retrofit 2多文件上传howto？

Question

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 description
);

这给了'上传:成功',但在服务器端我得到了胡言乱语:

CONTENT_TYPE:multipart/form-data; 边界= 50fbfeb3-3abc-4f15-B130-cdcb7e3a0e4f

内容发布:数组([文件] => PNGIHDRL alotofbinarygibberish .... ... snip [file2] => PNGIHDRL更多二进制乱码...

任何人都能指出我正确的方向吗？

单上传确实有效,这不是问题,我正在尝试上传2个或更多图像.

---

如果我把它改成这个:

HashMap<String, RequestBody> partMap = new HashMap<String, RequestBody>();
partMap.put("file\"; filename=\"" + file.getName(), requestBody);
partMap.put("file\"; filename=\"" + file2.getName(), requestBody);
Call<ResponseBody> call = service.upload(partMap);

---

@Multipart
@POST("/upload")
Call<ResponseBody> upload(
    @PartMap() Map<String, RequestBody> partMap,

---

我没有乱码,但只上传了第二张图片......!

---

UPDATE

我试过这个Retrofit(2.0 beta2)Multipart文件上传不起作用的解决方案,但得到一个错误@body不能与multipart一起使用:Java.lang.IllegalArgumentException:@Body参数不能与表单或多部分编码一起使用.(参数#1)

        for (String key : keys) {
            Bitmap bm = selectedImages.get(key);
            File f = new File(saveToInternalStorage(bm, key), key);
            if (f.exists()) {
                buildernew.addFormDataPart(key, key + ".png", RequestBody.create(MEDIA_TYPE, f));
            }
        }
        RequestBody requestBody = buildernew.build();

-

Call<ResponseBody> upload(
    @Body RequestBody requestBody

Answer 1

这有效:

            final MediaType MEDIA_TYPE=MediaType.parse("image/png");
            HashMap<String,RequestBody> map=new HashMap<>(selectedImages.size());
            RequestBody file=null;
            File f=null;
            Set<String> keys = selectedImages.keySet();
            for (String key : keys) {
                try {
                    Bitmap bitmap = selectedImages.get(key);
                    f = new File(saveToInternalStorage(bitmap, key), key);

                    FileOutputStream fos = new FileOutputStream(f);
                    if(bitmap!=null){
                        bitmap.compress(Bitmap.CompressFormat.PNG, 0 , fos);
                        fos.flush();
                        fos.close();
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                    return;
                }

                file=RequestBody.create(MEDIA_TYPE, f);
                map.put(""+key+"\"; filename=\""+key+".jpg",file);
                Log.i("##MYLOG###", "### MAP PUT:" + key + " filename:"+key+".jpg file:" + file.toString() +" type:"+ file.contentType() );
                file=null;
                f = null;
            }

-

Call<ResponseBody> upload(
        @PartMap() Map<String,RequestBody> mapFileAndName //for sending multiple images

-

注意:在使用httpClient.interceptors()进行调试时,我只看到一次上传,但在检查端点本身以查看它实际得到的内容时,它会获得多次上传!