pushandroid.POST2GCM.java Source code

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Here is the source code for pushandroid.POST2GCM.java

Source

/*
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 */
package pushandroid;

import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

/**
 *
 * @author Jeferson
 */
public class POST2GCM {

    private static final String URL = "https://android.googleapis.com/gcm/send";
    private static final String apiKey = "AIzaSyDZ-GMBC7SSLPhYJDc3...";

    public static void post(Content content) {

        try {

            // 1. URL
            URL url = new URL(URL);

            // 2. Open connection
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();

            // 3. Specify POST method
            conn.setRequestMethod("POST");

            // 4. Set the headers
            conn.setRequestProperty("Content-Type", "application/json");
            conn.setRequestProperty("Authorization", "key=" + apiKey);

            conn.setDoOutput(true);

            // 5. Add JSON data into POST request body
            //`5.1 Use Jackson object mapper to convert Contnet object into JSON
            ObjectMapper mapper = new ObjectMapper();

            // 5.2 Get connection output stream
            DataOutputStream wr = new DataOutputStream(conn.getOutputStream());

            // 5.3 Copy Content "JSON" into
            mapper.writeValue(wr, content);

            // 5.4 Send the request
            wr.flush();

            // 5.5 close
            wr.close();

            // 6. Get the response
            int responseCode = conn.getResponseCode();
            System.out.println("\nSending 'POST' request to URL : " + url);
            System.out.println("Response Code : " + responseCode);

            BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String inputLine;
            StringBuilder response = new StringBuilder();

            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine);
            }
            in.close();

            // 7. Print result
            System.out.println(response.toString());

        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}