How to post params in the body of HTTP post request?

Question

I have a set of the params, entered by the user and stored here:

 RequestParams params = new RequestParams(); params.put("confirmPass", confirmPass); params.put("username", email); params.put("password", password);

Then I instantiate the AsyncHttpClient and implement the required methods:

 AsyncHttpClient client = new AsyncHttpClient(); client.get(url, params, new AsyncHttpResponseHandler() { @Override public void onSuccess(int statusCode, Header[] headers, byte[] responseBody) { } @Override public void onFailure(int statusCode, Header[] headers, byte[] responseBody, Throwable error) { Toast.makeText(getApplicationContext(), "Failed", Toast.LENGTH_LONG).show(); } });

How can I POST the params stored in the body of the request (I am using a server (mocky.io) to mock the whole process)?

I'm not sure what you mean by "POST the params stored in the body of the request". If you want to make a post request with the parameters you can just use client.post(getAbsoluteUrl(url), params, responseHandler); — Kairat
– Kairat, Commented Jun 17, 2016 at 6:58

instanceof · Accepted Answer · 2016-06-17 08:16:53Z

How about:

public static String makePostRequest(String stringUrl, String payload, Context context) throws IOException { URL url = new URL(stringUrl); HttpURLConnection uc = (HttpURLConnection) url.openConnection(); String line; StringBuffer jsonString = new StringBuffer(); uc.setRequestProperty("Content-Type", "application/json; charset=UTF-8"); uc.setRequestMethod("POST"); uc.setDoInput(true); uc.setInstanceFollowRedirects(false); uc.connect(); OutputStreamWriter writer = new OutputStreamWriter(uc.getOutputStream(), "UTF-8"); writer.write(payload); writer.close(); try { BufferedReader br = new BufferedReader(new InputStreamReader(uc.getInputStream())); while((line = br.readLine()) != null){ jsonString.append(line); } br.close(); } catch (Exception ex) { ex.printStackTrace(); } uc.disconnect(); return jsonString.toString(); }

Where payload is the body JSON string. You will also need to use an AsyncTask and run the above method in the doInBackground method, like so:

new AsyncTask<String, String, String>() { @Override protected String doInBackground(String... params) { try { String response = makePostRequest("http://www.example.com", "{ exampleObject: \"name\" }", getApplicationContext()); return "Success"; } catch (IOException ex) { ex.printStackTrace(); return ""; } } }.execute("");

Now you can use the response you get back from the server as well

Thanks for the idea. So, having the method, I invoke in the onSuccess? Something like this? makePostRequest(url,"name:name,email:email",getApplicationContext());
Okey, it's getting clearer :) The AsyncTask i put in the onSuccess, or I don't need to use AsyncHttpClient anymore? What I am trying to do is bost the body of the resuest in mocky.io. Thanks a lot for the help!

shivpal jodha · Accepted Answer · 2016-06-17 07:00:04Z

you can do it like this

 u = Configa.COMMON_URL+"/login.html"; DefaultHttpClient httpClient = new DefaultHttpClient(); // HttpGet httpGet = new HttpGet(url); HttpPost httpPost = new HttpPost(u); List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2); nameValuePairs.add(new BasicNameValuePair("uname",usernm)); nameValuePairs.add(new BasicNameValuePair("pwd",userPwd)); nameValuePairs.add(new BasicNameValuePair("loginCompanycode",cmp)); httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); /* HttpResponse httpResponse = httpClient.execute(httpPost); HttpEntity httpEntity = httpResponse.getEntity(); retStr = EntityUtils.toString(httpEntity);*/ try { HttpResponse response= httpClient.execute(httpPost); // some response object BufferedReader reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent(), "UTF-8")); String json = reader.readLine(); Log.d("shiv", "valeLogin:" + json); JSONTokener tokener = new JSONTokener(json);

or with Asynic Task

 public class TrainingHistorygettask extends AsyncTask<String,Void, List<Object>> { Dialog dialogc; @Override protected void onPreExecute() { super.onPreExecute(); dialogc = new Dialog(TrainingHistory.this); dialogc.setCancelable(false); dialogc.requestWindowFeature(Window.FEATURE_NO_TITLE); dialogc.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT)); dialogc.show(); setProgressBarIndeterminateVisibility(true); } @Override protected List<Object> doInBackground(String... params) { // TODO Auto-generated method stub RestTemplate restTemplate = new RestTemplate(); SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(TrainingHistory.this); String cookieValue = preferences.getString("Set-Cookie",""); HttpHeaders requestHeaders = new HttpHeaders(); List<MediaType> acceptableMediaTypes = new ArrayList<MediaType>(); acceptableMediaTypes.add(MediaType.APPLICATION_JSON); requestHeaders.setAccept(acceptableMediaTypes); //requestHeaders.add("Content-Type", ""); requestHeaders.add("Cookie",cookieValue); HttpEntity<?> requestEntity =new HttpEntity<Object>(requestHeaders); try{ List<HttpMessageConverter<?>> messageConverters = new ArrayList<HttpMessageConverter<?>>(); messageConverters.add(new StringHttpMessageConverter()); messageConverters.add(new MappingJacksonHttpMessageConverter()); restTemplate.setMessageConverters(messageConverters); } catch(Exception e) { System.out.println("Error "+e); } try { ResponseEntity<Object[]> responseEntity = restTemplate.exchange( params[0], HttpMethod.POST, requestEntity, Object[].class); return Arrays.asList(responseEntity.getBody()); } catch (Exception e) { System.out.println("Error "+e); return null; } } @Override protected void onPostExecute(List<Object> responseData){ if(dialogc.isShowing()){ dialogc.dismiss(); }

Yash Jain · Accepted Answer · 2016-06-17 07:01:40Z

Why don't you use Volley if you are new to android. Its much Simpler and doesn't require an Asycntask etc.

RequestQueue queue = Volley.newRequestQueue(this); String url ="http://www.google.com"; // Request a string response from the provided URL. StringRequest stringRequest = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() { @Override public void onResponse(String response) { // Display the first 500 characters of the response string. mTextView.setText("Response is: "+ response.substring(0,500)); } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError error) { mTextView.setText("That didn't work!"); } }){ Map getParameters(){ Map map=new Hashamp()<String,String>; //ADD POST DATA TO MAP return map; } }; // Add the request to the RequestQueue. queue.add(stringRequest);

Thanks a lot for the suggestion! The problem, for me, comes from the mock I need to implement. What I am doing so far - using mocky.io, generating an empty request and giving the parameter of the request as URL in my code. My approach could be completely worng, but what I need to achieve is to post the info, collected from the user, in the body of the server POST request.

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How to post params in the body of HTTP post request?

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