java - 将图像字节数组作为 json 从 android 应用程序传递到 c# restful 服务

Question

我需要通过在 c# 中调用 restful webservice 从我的 android 应用程序上传图像，但是当我通过将 byte[] 添加到 JSONObject 来尝试它时，它会将 byte[] 转换为字符串并且 c# 服务抛出 Bad request("反序列化命名空间“expected.Found text”[B@22b6cc7f”中的 Object.Element 时出错。

Android Code:
    Bitmap bitmap = BitmapFactory.decodeResource(getResources(),R.drawable.ttulips);
    ByteArrayOutputStream stream = new ByteArrayOutputStream();
    bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
    bitMapData = stream.toByteArray();

            JSONObject jsonParam = new JSONObject();
            try {
            jsonParam.put("IncomingFile",bitMapData);               
            jsonParam.put("FileName", "name.jpg");

            Log.d("Json",jsonParam+"");
} catch (JSONException e) {
            e.printStackTrace();
        }

JSON 请求的日志如下 {"IncomingFile":"[B@22b67f","FileName":"name.jpg"}

甚至尝试将字节数组转换为Base64编码的字节数组，但是在将base64字节数组添加到jsonobject时，它被视为字符串。

我该如何解决这个问题？提前致谢。

Answer 1

尝试将位图转换为字符串并将此字符串传递给 C# 服务器

 if(fileUri1 != null) {
                bitmap1 = BitmapFactory.decodeFile(fileUri1.getPath(),
                        options);
                ByteArrayOutputStream baos1 = new ByteArrayOutputStream();
                if(bitmap1 != null) {
                    bitmap1.compress(Bitmap.CompressFormat.PNG, 50, baos1);
                    byte[] b1 = baos1.toByteArray();
                    bitmapstring1 = Base64.encodeToString(b1, 

                    Base64.DEFAULT);
                }
            }

网络服务调用:

 public class CallWebService extends AsyncTask<Void, Void, Void> {
    @Override
    protected Void doInBackground(Void... params) {
        // Call Webservice for Get Menus
        WebServiceCall webServiceCall = new WebServiceCall(); // Custom class for call webservice
        BitmapFactory.Options options = new BitmapFactory.Options();

        // downsizing image as it throws OutOfMemory Exception for larger
        // images
        options.inSampleSize = 8;


        parameters = new ArrayList<NameValuePair>();

        parameters.add(new BasicNameValuePair("Name",uname12));
        parameters.add(new BasicNameValuePair("Address", uaddr12));
        parameters.add(new BasicNameValuePair("Email", en));
        parameters.add(new BasicNameValuePair("Qualification", uquali12));
        parameters.add(new BasicNameValuePair("Phoneno", ucontactno12));
        parameters.add(new BasicNameValuePair("Appliedfor", uappfor12));
        parameters.add(new BasicNameValuePair("Image", bitmapstring));
        parameters.add(new BasicNameValuePair("Resumeimage", bitmapstring1));
        parameters.add(new BasicNameValuePair("Operation", "i"));
        Log.i("param::",parameters.toString());
        response = webServiceCall.makeServiceCall(mUrlWebServiceLogin, parameters);


        Log.d("ResponseLogin:", response);



        return null;
    }

    @Override
    protected void onPostExecute(Void result) {
        if (progressDialog.isShowing())
            progressDialog.dismiss();

        if(response.contains("\"success\"")){
            session.createLoginSession(uname12);
            Toast.makeText(getApplicationContext(),"Successfully inserted",Toast.LENGTH_SHORT).show();
            Intent in = new Intent(getApplicationContext(),InterView.class);
            in.putExtra("Name",uname12);

            startActivity(in);
            finish();


        }else{
            Toast.makeText(getApplicationContext(),"data not inserted",Toast.LENGTH_SHORT).show();
        }

    }

    @Override
    protected void onPreExecute() {
        progressDialog = new ProgressDialog(MainActivity.this);
        progressDialog.setMessage("Loading...");
        progressDialog.show();
        progressDialog.setCanceledOnTouchOutside(false);
        super.onPreExecute();
    }
}