将JSON数据和图像发送到服务器

时间:2015-02-02 15:03:36

标签: android json image asynchronous

我不确定我是否采取了正确的方法来实现我的目标。

我正在尝试将JSON数据和图像发送到服务器。当用户单击按钮时,异步调用激活,收集具有数据的JSON容器并获取图像路径。这是我到目前为止所做的:

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;
        }

现在的问题是我可以发送或者两者都发送。有没有办法将图像数据附加到setEntity,以便它们聚合它们?谢谢你。

1 个答案:

答案 0 :(得分:2)

将这两个参数添加到MultipartEntity而不是调用setEntity两次,因为setEntity方法的第二次调用将覆盖第一个方法调用设置,如下所示:

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