HttpUrlConnection With Post Request And Parameter As Json Object Android

Hi I am developing small android application in which I want to use HttpUrlConnection post request with params as json object. But its not working for me I did it in following way:

Solution 1:

This error occurs due to 401 responsecode.

You can check first response code like this

int responsecode = response.getStatusLine().getStatusCode();

This exception is thrown if the server replies with a 401.

The actual cause for the 401 that you didn't send an OAuth verifier code where it was expected at this point.

You can refer below code

    String url = LoginUrl;
    String resultstring = "";

    HttpClient httpclient = new DefaultHttpClient();
    HttpPost httppost = new HttpPost(url);

    // Add your data
    List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(5);
    nameValuePairs.add(new BasicNameValuePair("j_username", username));
    nameValuePairs.add(new BasicNameValuePair("j_password", password));

    try {
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

        HttpContext localContext = new BasicHttpContext();
        localContext.setAttribute(ClientContext.COOKIE_STORE,
                Util.cookieStore);

        try {
            HttpResponse response = httpclient.execute(httppost,
                    localContext);

            int responsecode = response.getStatusLine().getStatusCode();
            if (responsecode == 200) {

                Util.responsecode = responsecode;
                resultstring = "Success";
                InputStream in = response.getEntity().getContent();
                resultstring = Util.convertinputStreamToString(in);

            } else if (responsecode == 401) {
                Util.responsecode = responsecode;
            }

        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }

Solution 2:

I higly recommend using Unirest its a simple library for making http requests it has a very easy to use api and it doesnt overload the mem too much, here's an example on how would it be using your example code.

Unirest.post("https://example.com")
.queryString("places", "['LNCf206KYa5b', 'oWdC0hnm1jjJ']")
.queryString("action", "Do")
.asJson()