com.vmanolache.mqttpolling.Polling.java Source code

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Here is the source code for com.vmanolache.mqttpolling.Polling.java

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package com.vmanolache.mqttpolling;

import java.io.BufferedWriter;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.net.HttpURLConnection;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
import org.json.JSONException;
import org.json.JSONObject;

/**
 *
 * @author vmanolache
 */
public class Polling {

    final int SECONDS = 20 * 60;
    private final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        Polling polling = new Polling();
        polling.startPolling();
    }

    private void startPolling() {
        final Runnable beeper = new Runnable() {
            @Override
            public void run() {
                System.out.println("Executing MQQT post");
                try {
                    sendPost();
                } catch (UnsupportedEncodingException | JSONException ex) {
                    Logger.getLogger(Polling.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
        };

        scheduler.scheduleAtFixedRate(beeper, 10, SECONDS, TimeUnit.SECONDS);
    }

    private void sendPost() throws UnsupportedEncodingException, JSONException {
        try {
            String url = "http://localhost:8080/notifications";
            URL obj = new URL(url);
            HttpURLConnection con = (HttpURLConnection) obj.openConnection();

            HttpURLConnection connection = (HttpURLConnection) obj.openConnection();
            connection.setDoOutput(true);
            connection.setDoInput(true);
            connection.setRequestProperty("Content-Type", "application/json");
            connection.setRequestMethod("POST");

            /**
             * POSTing *
             */
            OutputStream os = connection.getOutputStream();
            BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"));
            writer.write(getQuery()); // should be fine if my getQuery is encoded right yes?
            writer.flush();
            writer.close();
            os.close();
            connection.connect();

            int status = connection.getResponseCode();
            System.out.println(status);
        } catch (IOException ex) {
            Logger.getLogger(Polling.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    private String getQuery() throws UnsupportedEncodingException, JSONException {
        JSONObject jobj = new JSONObject();
        jobj.put("subject", "Good evening");
        jobj.put("content", "infidels...");
        return jobj.toString();
    }
}