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POHTTp post request in android
 

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    <p>I am new to android. I was trying http post request but was getting connection failed . Below is the given code</p> <pre><code>private void postRequest(String givenUsername, String givenPassword) { String paramUsername = givenUsername; String paramPassword = givenPassword; System.out.println("*** doInBackground ** paramUsername " + paramUsername + " paramPassword :" + paramPassword); HttpClient httpClient = new DefaultHttpClient(); // In a POST request, we don't pass the values in the URL. // Therefore we use only the web page URL as the parameter of the HttpPost argument HttpPost httpPost = new HttpPost("url"); httpPost.addHeader("Content-Length", "40"); httpPost.addHeader("Accept", "application/json,text/javascript, */*"); httpPost.addHeader("Content-Type", "application/x-www-form-urlencoded"); // httpPost.s // Because we are not passing values over the URL, we should have a mechanism to pass the // values that can be // uniquely separate by the other end. // To achieve that we use BasicNameValuePair // Things we need to pass with the POST request BasicNameValuePair usernameBasicNameValuePair = new BasicNameValuePair("username", paramUsername); BasicNameValuePair passwordBasicNameValuePAir = new BasicNameValuePair("password", paramPassword); // We add the content that we want to pass with the POST request to as name-value pairs // Now we put those sending details to an ArrayList with type safe of NameValuePair List&lt;NameValuePair&gt; nameValuePairList = new ArrayList&lt;NameValuePair&gt;(); nameValuePairList.add(usernameBasicNameValuePair); nameValuePairList.add(passwordBasicNameValuePAir); try { // UrlEncodedFormEntity is an entity composed of a list of url-encoded pairs. // This is typically useful while sending an HTTP POST request. UrlEncodedFormEntity urlEncodedFormEntity = new UrlEncodedFormEntity(nameValuePairList); // setEntity() hands the entity (here it is urlEncodedFormEntity) to the request. httpPost.setEntity(urlEncodedFormEntity); try { // HttpResponse is an interface just like HttpPost. // Therefore we can't initialize them HttpResponse httpResponse = httpClient.execute(httpPost); HttpEntity resEntity = httpResponse.getEntity(); if (resEntity != null) { Log.i("RESPONSE", EntityUtils.toString(resEntity)); } // According to the JAVA API, InputStream constructor do nothing. // So we can't initialize InputStream although it is not an interface InputStream inputStream = httpResponse.getEntity().getContent(); InputStreamReader inputStreamReader = new InputStreamReader(inputStream); BufferedReader bufferedReader = new BufferedReader(inputStreamReader); StringBuilder stringBuilder = new StringBuilder(); String bufferedStrChunk = null; while ((bufferedStrChunk = bufferedReader.readLine()) != null) { stringBuilder.append(bufferedStrChunk); } System.out.println("Initial set of cookies:"); List&lt;Cookie&gt; cookies = ((AbstractHttpClient) httpClient).getCookieStore().getCookies(); if (cookies.isEmpty()) { System.out.println("None"); } else { for (int i = 0; i &lt; cookies.size(); i++) { System.out.println("- " + cookies.get(i).toString()); } } System.out.println("Post logon cookies:"); cookies = ((AbstractHttpClient) httpClient).getCookieStore().getCookies(); if (cookies.isEmpty()) { System.out.println("None"); } else { for (int i = 0; i &lt; cookies.size(); i++) { System.out.println("- " + cookies.get(i).toString()); } } } catch (ClientProtocolException cpe) { System.out.println("First Exception caz of HttpResponese :" + cpe); cpe.printStackTrace(); } catch (IOException ioe) { System.out.println("Second Exception caz of HttpResponse :" + ioe); ioe.printStackTrace(); } } catch (UnsupportedEncodingException uee) { System.out.println("An Exception given because of UrlEncodedFormEntity argument :" + uee); uee.printStackTrace(); } } </code></pre> <p>I am sending username and password for my Login screen .and it will be returning me a cookie. Any help would be appreciated.</p>
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