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POHow to post JSON String from Android
 

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    <p>I am facing problem when try to post json on server from Android . The error is: </p> <blockquote> <p>Failed loading JSON. Special characters must not be included in the request. Please check the requested JSON.</p> </blockquote> <p>I have followed many examples, but none were helpful. Please suggest a solution or help me find the problem in the code.</p> <p>Below is the code for posting JSON string on server.</p> <pre><code>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&lt;NameValuePair&gt; nameValuePairs = new ArrayList&lt;NameValuePair&gt;(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; } } } </code></pre>
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    1. CO[Special characters in Json may pause problem][1]. Try using lowercase special characters free keys. [1]: http://stackoverflow.com/questions/7866063/how-to-add-string-with-special-character-as-json-key
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    2. COWhy you are using iso-8859-1 encoding? Why not utf-8?
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    3. CO@kknot i also checked with utf-8, but still facing same problem
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