将JSON数据和图像发送到服务器

Question

I'm not sure if I'm taking the correct course in trying to achieve my objective.

I'm trying to send both JSON data and an image to a server. When the user clicks on a button the async call activates, gathers the JSON container that has the data and gets the image path. Here's is what I have so far:

protected String doInBackground(String... data) {
            gatherEditTextStringValue();

            HttpClient httpclient = new DefaultHttpClient();
            HttpPost httppost = new HttpPost(url);

            try {
                ArrayList<NameValuePair> postVars = new ArrayList<NameValuePair>();
                postVars.add(new BasicNameValuePair("JSON", String.valueOf(JSONMainContainer)));
                httppost.setEntity(new UrlEncodedFormEntity(postVars));

                if (questionTitleImageUri != null) {
                    questionTitleImageFile = new File(getRealPathFromURI(questionTitleImageUri));
                    FileBody bin1 = new FileBody(questionTitleImageFile);
                    MultipartEntity reqEntity = new MultipartEntity();
                    reqEntity.addPart("uploadedfile1", bin1);
                    httppost.setEntity(reqEntity);
                }

            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }

            try {
                HttpResponse response = httpclient.execute(httppost);
                responseBody = EntityUtils.toString(response.getEntity());
            } catch (ClientProtocolException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return responseBody;
        }

Now the problem is that I can send either or, not both. Is there a way to append the image data to the setEntity so that its aggregates both of them? Thank ye.

Answer 1

Add both parameters to MultipartEntity instead of calling setEntity two times because second call of setEntity method will override first method call settings do it as:

MultipartEntity reqEntity = new MultipartEntity();
// add file
reqEntity.addPart("uploadedfile1", bin1);
// add JSON String 
reqEntity.addPart("JSON", new StringBody(String.valueOf(JSONMainContainer)));
httppost.setEntity(reqEntity);