使用 okhttp 将文本和多个图像作为数组传递

Question

我正在使用 Okhttp lib to send data to server. I want to set text and images in RequestBody. For uploading multiple image to server using Okhttp i follow . I have implemented that type of code in my app in another activity class and its work fine. I have 这个关于如何在 RequestBody 中传递数组的问题。

我的arrayList格式是这样的

blockList
{
    block0
    {
        description0 = First block
        image0 = {image1, image2}
        video0 = videolink
        disp_order0 = 0
        block0 = 0
    }
    block1
    {
        description1 = second block
        image1 = {image1,image2,image2}
        video1 = videolink
        disp_order1 = 1
        block1 = 1
    }
    .....
}

My Requirement :-

现在我想在单个参数中将多个图像作为数组发送。当我发送第一个块时，参数名称是 description0、image0[]、video1、disp_order 和 block0 并且 image0[] 将包含第一个块图像作为数组和其他相同。

API 工作正常，因为当我在邮递员中测试时，我在服务器端收到数据。你可以在下面看到。.

这是我的 java 函数，它在 RequestBody 中设置数据并调用以在服务器上发送该数据。

ProgressDialog pd;
private OkHttpClient client;

private void saveCastBoxOnServer(String castBoxTitle, String selectedCastBoxId, String selectedCategoryId,
                                     String userId, String action, ArrayList<CastBoxBlock> blockList)
{
    try
    {
        client = new OkHttpClient.Builder()
                    .retryOnConnectionFailure(true)
                    .build();

        ArrayList<CastBoxBlock> blockArrayList = blockList;
        int blockSize = blockArrayList.size();

        MultipartBody.Builder multipartBuilderNew = new MultipartBody.Builder().setType(MultipartBody.FORM);

        for (int i = 0; i < blockSize; i++)
        {

            String description = blockArrayList.get(i).getBlockDescription();
            String descriptionField = "description"+i;

            multipartBuilderNew.addFormDataPart(descriptionField, description);

            /**This is used for distribution of images and videos. After that set that
             * Images and video in multipartBuilder.
             **/
            CastBoxBlock model = blockArrayList.get(i);

            ArrayList<SelectedMediaModel> mediaModels = model.getSelectedMediaModelArrayList();
            int mediaModelsSize = mediaModels.size();

            String passingVideoUri = "";
            String videoUri = "";
            for (int j = 0; j < mediaModelsSize; j++)
            {
                String mediaType = mediaModels.get(j).getMediaType();


                if (mediaType.equals(StringKeyConstant.mediaVideo))
                {
                    videoUri = mediaModels.get(j).getMediaPath();

                    if (passingVideoUri.trim().length()==0){
                        passingVideoUri = videoUri;
                    }else{
                        passingVideoUri = passingVideoUri + "," + videoUri;
                    }
                }
                else if (mediaType.equals(StringKeyConstant.mediaImage))
                {
                    String imagePath = mediaModels.get(j).getMediaPath();
                    File sourceFile = new File(imagePath);

                    /**Changes whether JPEG or PNG**/
                    final MediaType MEDIA_TYPE = MediaType.parse(
                    constant.getFileExt(imagePath).endsWith("png") ? "image/png" : "image/jpeg");

                    String imageName = System.currentTimeMillis() + j + "_block_img.jpg";
                    String imageField = "image"+i+"["+j+"]";

                    multipartBuilderNew.addFormDataPart(imageField,imageName,
                        RequestBody.create(MEDIA_TYPE, sourceFile));
                }
            }

            /**This is used to set the {@videoUri} block of videos and send to sever**/
            String videoField = "video"+i;
            multipartBuilderNew.addFormDataPart(videoField, passingVideoUri);

            /**This will set the {@display_order} in multipartBuilder**/
            String displayOrderField = "disp_order"+i;
            String displayOrder = blockArrayList.get(i).getBlockIndex();
            multipartBuilderNew.addFormDataPart(displayOrderField, displayOrder);

            /**This will set the {@block} value in multipartBuilder**/
            String blockField = "block"+i;
            String block = ""+i;
            multipartBuilderNew.addFormDataPart(blockField, block);
        }

        pd = new ProgressDialog(activity);
        pd.setCancelable(false);
        pd.setMessage(getResources().getString(R.string.please_wait));
        pd.show();

        RequestBody formBody = multipartBuilderNew
            .addFormDataPart("cast_title", castBoxTitle)
            .addFormDataPart("user_id", userId)
            .addFormDataPart("cast_box", selectedCastBoxId)
            .addFormDataPart("category", selectedCategoryId)
            .addFormDataPart("action", action)
            .build();


        Request request = new Request.Builder()
            .url(ApiUtils.ADD_FETCH_USER_CAST)
            .post(formBody)
            .build();

        client.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                Log.e(TAG, "Get Api credential fail."+call.toString());
                e.printStackTrace();
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException
            {
                try
                {
                    if (pd != null){
                        pd.cancel();
                        pd.dismiss();
                        pd = null;
                    }
                    String castSavedResponse = response.body().string();
                    Log.i(TAG, "castSavedResponse = " + castSavedResponse);
                }
                catch (Exception e){
                    Log.e(TAG, "***Error : onResponse() method");
                    e.printStackTrace();
                }
            }
        });
    }
    catch (Exception e){
        Log.e(TAG, "***Error : saveCastBoxOnServer()");
        e.printStackTrace();
    }
}

提前致谢。如果有人愿意提供帮助，将不胜感激。

Answer 1

当我检查你的代码时，我注意到一件事。我不确定，但我认为您更改了 image[] 位置的代码。你可以改变你的代码如下。我希望这对你有帮助，你找到了解决方案。

使用此代码

String imageField = "image"+i+"[]";

而不是

String imageField = "image"+i+"["+j+"]";

当我在 Okhttp 中将简单图像作为数组传递时，我会按照上面的方式编写代码。使用Okhttp在服务器上上传多张图片，我也跟着如你所愿。