Как опубликовать JSON String с Android

Question

У меня возникла проблема при попытке отправить json на сервер с Android. Ошибка:

Не удалось загрузить JSON. Специальные символы не должны включаться в запрос . Пожалуйста, проверьте запрашиваемый JSON.

Я следил за многими примерами, но ни один из них не был полезным. Пожалуйста, предложите решение или помогите мне найти проблему в коде.

Ниже приведен код для публикации строки JSON на сервере.

public class JSONParser { 

    static InputStream is = null; 
    static JSONObject jObj = null; 
    static String json = ""; 

    // constructor 
    public JSONParser() { 

    } 

    public JSONObject getJSONFromUrl(String url) { 

     // Making HTTP request 
     try { 
      // defaultHttpClient 
      DefaultHttpClient httpClient = new DefaultHttpClient(); 
      HttpPost httpPost = new HttpPost(url); 
      /* ====================================================================================================*/ 

         JSONObject listobj = new JSONObject(); 
         JSONObject listInvoice = new JSONObject(); 
         listInvoice.put("client_id",""); 
         listInvoice.put("date_from",""); 
         listInvoice.put("date_to",""); 
         listInvoice.put("invoice_number",""); 
         listInvoice.put("invoice_record_status",""); 
         listInvoice.put("invoice_status",""); 
         listInvoice.put("page","1"); 
         listInvoice.put("per_page_record","10"); 
         listobj.put("listInvoice", listInvoice); 


         //--List nameValuePairs = new ArrayList(1); 
         List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1); 
         nameValuePairs.add(new BasicNameValuePair("json_data", listobj.toString())); 


         httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); 
         Log.d("JSON",listobj.toString()); 
      /*======================================================================================================*/ 

      HttpResponse httpResponse = httpClient.execute(httpPost); 
      String is = EntityUtils.toString(httpResponse.getEntity()); 

      Log.d("JSON","RESPONSE : " + is); 

      //--HttpEntity httpEntity = httpResponse.getEntity(); 
      //--is = httpEntity.getContent();   

     } catch (UnsupportedEncodingException e) { 
      e.printStackTrace(); 
     } catch (ClientProtocolException e) { 
      e.printStackTrace(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 
     catch (JSONException e) { 
      Log.e("JSON",e.getMessage()); 
    } 

     try { 
      BufferedReader reader = new BufferedReader(new InputStreamReader(
        is, "iso-8859-1"), 8); 
      StringBuilder sb = new StringBuilder(); 
      String line = null; 
      while ((line = reader.readLine()) != null) { 
       sb.append(line + "\n"); 
      } 
      is.close(); 
      json = sb.toString(); 
     } catch (Exception e) { 
      Log.e("Buffer Error", "Error converting result " + e.toString()); 
     } 

     // try parse the string to a JSON object 
     try { 
      jObj = new JSONObject(json); 
     } catch (JSONException e) { 
      Log.e("JSON Parser", "Error parsing data " + e.toString()); 
     } 

     // return JSON String 
     return jObj; 

     } 
    } 
} 

Answer 1

это функция для передачи JSON к вашему URL

public void getServerData() throws JSONException, ClientProtocolException, IOException { 

    String title = Title_edittext.getText().toString().trim(); 
    String details = Details_edittext.getText().toString().trim(); 

    HttpParams httpParams = new BasicHttpParams(); 
    HttpConnectionParams.setConnectionTimeout(httpParams, TIMEOUT_MILLISEC); 
    HttpConnectionParams.setSoTimeout(httpParams, TIMEOUT_MILLISEC); 
    HttpClient client = new DefaultHttpClient(httpParams); 
    HttpPost request = new HttpPost(url); // add your url here... 

    request.setHeader("Content-Type", "application/json");   

    JSONObject json = new JSONObject();  
    json.put("client_id", channel_token); 
    json.put("date_from", data_src_id); 
    json.put("date_to", title); 

    Log.i("JSON Object", json.toString()); 

    StringEntity se = new StringEntity(json.toString()); 

    se.setContentEncoding("UTF-8"); 
    se.setContentType("application/json"); 

    request.setEntity(se);  

    HttpResponse response = client.execute(request); 

    HttpEntity entity = response.getEntity(); 
    InputStream is = entity.getContent(); 
    String _response = convertStreamToString(is); 
    System.out.println("res-- " + _response); 

    // Check if server response is valid code   
    int res_code = response.getStatusLine().getStatusCode(); 
    System.out.println("code-- " +res_code); 
} 
private static String convertStreamToString(InputStream is) { 

    BufferedReader reader = new BufferedReader(new InputStreamReader(is), 8192); 
    StringBuilder sb = new StringBuilder(); 

    String line = null; 
    try { 
     while ((line = reader.readLine()) != null) { 
      sb.append((line + "\n")); 
     } 
    } catch (IOException e) { 
     e.printStackTrace(); 
    } finally { 
     try { 
      is.close(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 
    } 
    return sb.toString(); 
} 

Answer 2

Вот ссылка How to send a JSON object over Request with Android?

int TIMEOUT_MILLISEC = 10000; // = 10 seconds 
HttpParams httpParams = new BasicHttpParams(); 
HttpConnectionParams.setConnectionTimeout(httpParams, TIMEOUT_MILLISEC); 
HttpConnectionParams.setSoTimeout(httpParams, TIMEOUT_MILLISEC); 
HttpClient client = new DefaultHttpClient(httpParams); 

HttpPost request = new HttpPost(serverUrl); 
request.setEntity(new ByteArrayEntity(
    postMessage.toString().getBytes("UTF8"))); 
HttpResponse response = client.execute(request); 

взгляд линия это: request.setEntity (новый ByteArrayEntity ( postMessage.toString () .getBytes ("UTF8")));