Question

我正在构建一个需要在其POST正文请求中包含数组的API调用的应用。我正在使用OkHttp 2.6来请求API。

Postman中的请求如下所示：

为了达到这个目的，我尝试了几种写RequestBody的方法，

第一种方法

RequestBody requestBody = new MultipartBuilder()
        .type(MultipartBuilder.FORM)
        .addFormDataPart("app_token", MY_TOKEN)
        .addFormDataPart("user_id", 377)
        .addFormDataPart("group_id", String.valueOf(groupId))
        .addFormDataPart("key_id", deals.toString())
        .addFormDataPart("img", filename + ".jpg", fileBody)
        .build();

第二种方法

RequestBody requestBody = new MultipartBuilder()
        .type(MultipartBuilder.FORM)
        .addFormDataPart("app_token", MY_TOKEN)
        .addFormDataPart("user_id", 377)
        .addFormDataPart("group_id", String.valueOf(groupId))
        .addFormDataPart("key_id[0]", "33")
        .addFormDataPart("key_id[1]", "34")
        .addFormDataPart("img[0]", filename + ".jpg", fileBody)
        .build();

第三种方法，我发现here。

MediaType json = MediaType.parse("application/json; charset=utf-8");
Map<String, Integer> params = new HashMap<>();
for (int i = 0; i < deals.size(); i++) {
    params.put("key_id["+i+"]", Integer.valueOf(deals.get(i).getUid()));
}
JSONObject parameter = new JSONObject(params);
RequestBody theBody = RequestBody.create(json, parameter.toString());


RequestBody requestBodyyy = new MultipartBuilder()
        .type(MultipartBuilder.FORM)
        .addFormDataPart("app_token", MY_TOKEN)
        .addFormDataPart("user_id", 377)
        .addFormDataPart("group_id", String.valueOf(groupId))
        .addPart(theBody)
        .addFormDataPart("img[0]", filename + ".jpg", fileBody)
        .build();

但是，他们都没有工作。

这样做的正确方法是什么？我还需要数组大小是动态的，因为我没有传递静态数据。

Answer 1

嘿，解决方案似乎很容易。我设法解决了这个问题，所以无论如何我都会在这里写任何寻求相同解决方案的人。

MultipartBuilder multipartBuilder = new MultipartBuilder()
        .type(MultipartBuilder.FORM)
        .addFormDataPart("token", MY_TOKEN)
        .addFormDataPart("user_id", user_id)
        .addFormDataPart("group_id", group_id)
        // .addFormDataPart("img[0]", filename + ".jpg", RequestBody.create(MediaType.parse("image/png"), file));

for (int i = 0; i < keys.size(); i++) {
    multipartBuilder.addFormDataPart("key_id[" + i + "]", keys.get(i));
}

for (int i = 0; i < files.size(); i++) {
    filename = Utils.getSimpleTimestamp();
    multipartBuilder.addFormDataPart("img[" + i + "]", filename + ".jpg", RequestBody.create(MediaType.parse("image/png"), files.get(i)));
}

RequestBody requestBody = multipartBuilder.build();
Request request = new Request.Builder()
        .url(API_URL)
        .post(requestBody)
        .addHeader("content-type", "multipart/form-data;")
        .build();

OkHttpClient okHttpClient = new OkHttpClient();

Answer 2

我正在使用Retrofit和Gson

private class AddImageAsyncTask extends AsyncTask<Void, Imageuploadpojo, Imageuploadpojo> {


        ApiCall a;
        String path1,path2;

        private AddImageAsyncTask(View vs, String path1,String path2) {
            this.vs = vs;
            this.path1 = path1;
             this.path2 = path2;         
            a = retrofit2.create(ApiCall.class);
        }



        @Override
        protected Imageuploadpojo doInBackground(Void... params) {
            Map<String, RequestBody> typedfile = new HashMap<String, RequestBody>();
            File f = new File(path1);
             File f2 = new File(path2);
            if (f.exists()) {
                RequestBody requestFile =
                        RequestBody.create(MediaType.parse("multipart/form-data"), f);
                String filename = f.getName();
                typedfile.put("fileToUpload" + "\"; filename=\"" + filename, requestFile);
                //   typedfile.put("img[0]" + count, requestFile);
            }
              if (f2.exists()) {
                RequestBody requestFile =
                        RequestBody.create(MediaType.parse("multipart/form-data"), f2);
                String filename = f.getName();
                typedfile.put("fileToUpload" + "\"; filename=\"" + filename, requestFile);
                //   typedfile.put("img[1]" + count, requestFile);
            }

            // asynchronous
            // Create a call instance for looking up Retrofit contributors.
            Call<Imageuploadpojo> call = a.ImageCall(typedfile);
            // Fetch and print a list of the contributors to the library.
            Imageuploadpojo c = null;
            try {
                c = call.execute().body();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return c;
        }

        @Override
        protected void onPostExecute(Imageuploadpojo c) {
            super.onPostExecute(c);

        }
    }

看到这个你就可以了解。或者在改造中试试

代码已更新：

    //Create Hashmap:

         Map<String, RequestBody> typedfile = new HashMap<String, RequestBody>();

    //Add your file path

     File f2 = new File(path2);

    //Check the file is exist or not
     if (f2.exists()) {
    //Then Create RequestBody add file in second perameter
    RequestBody requestFile =
                            RequestBody.create(MediaType.parse("multipart/form-data"), f2);

      typedfile.put("img[1]" + "\"; filename=\"" + filename, requestFile);
//"img[1]" is parameter

使用Okhttp在多部分POST中传递数组

2 个答案: