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)?

Solution

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

Comments

[user6456773]

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.

[user6456773]

Thanks for the idea. So, having the method, I invoke in the onSuccess? Something like this? makePostRequest(url,"name:name,email:email",getApplicationCo‌​ntext());

[user6456773]

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!

[instanceof]

You don't have to use AsyncHttpClient anymore :)