animalclient.GoogleClient.java Source code

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Here is the source code for animalclient.GoogleClient.java

Source

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package animalclient;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import javax.ws.rs.ClientErrorException;
import javax.ws.rs.client.Client;
import javax.ws.rs.client.WebTarget;

import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;

public class GoogleClient {

    URL url;
    HttpURLConnection conn;
    String line, outputString = "";
    BufferedReader reader;
    JSONParser parser = new JSONParser();
    String distanceMeter;

    public GoogleClient(String destination) throws MalformedURLException, IOException, ParseException {
        url = new URL("https://maps.googleapis.com/maps/api/distancematrix/json?origins=Vienna&destinations="
                + destination);
        conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("GET");
        reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));

        while ((line = reader.readLine()) != null) {
            outputString += line;
        }
        //        System.out.println(outputString);

        JSONObject responseObject = (JSONObject) new JSONParser().parse(outputString);
        String rows = responseObject.get("rows").toString();

        //        System.out.println("outputString=" + outputString);
        //        System.out.println("rows=" + rows.substring(1, rows.length()-1));

        JSONObject responseObjectRows = (JSONObject) new JSONParser().parse(rows.substring(1, rows.length() - 1));
        String elements = responseObjectRows.get("elements").toString();
        //        System.out.println("elements=" + elements.substring(1, elements.length()-1));

        JSONObject responseObjectElements = (JSONObject) new JSONParser()
                .parse(elements.substring(1, elements.length() - 1));
        String distance = responseObjectElements.get("distance").toString();
        //        System.out.println("distance=" + distance.substring(1, distance.length()-1));        

        JSONObject responseObjectDistance = (JSONObject) new JSONParser().parse(distance);
        distanceMeter = responseObjectDistance.get("value").toString();
        //        System.out.println("value=" + distanceMeter);
    }

    public String getDistance() {
        return distanceMeter;
    }
}