test.LocationCrawler.java Source code

Introduction

Here is the source code for test.LocationCrawler.java

Source

/*
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 */
package test;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.IOException;

/**
 *
 * @author PowerWBH
 */
public class LocationCrawler {

    private static String ProcessLocationRequest(String QueryItem) {
        try {
            QueryItem = URLEncoder.encode(QueryItem, "ISO-8859-1");
            String URLStr = String.format(
                    "https://maps.googleapis.com/maps/api/geocode/json?" + "address=%s&sensor=false&key=%s",
                    QueryItem,
                    //"AIzaSyAOkEu7MBxUj4t2pBq1GZ-0Td7cf7bOKTg");
                    //"AIzaSyCvzTx408371P7CtoXN8BejAAmBa0NUZbc");
                    "AIzaSyAIyQ3XaHrC9TQVMIs65IrwzREtnzqZRKw");
            URL url = new URL(URLStr);

            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("GET");

            if (connection.getResponseCode() == 200) {
                InputStream is = connection.getInputStream();
                InputStreamReader isr = new InputStreamReader(is, "UTF-8");
                BufferedReader br = new BufferedReader(isr);
                String sb = "";
                String str;

                while ((str = br.readLine()) != null) {
                    sb += (str);
                }

                br.close();

                return sb;
            } else {
                return "";
            }
        } catch (Exception e) {
            return "";
        }
    }

    public static String getLocationCoord(String Address) {
        String jsonString = ProcessLocationRequest(Address);
        String LocationCoord = "";

        if (jsonString.length() > 0) {
            try {
                ObjectMapper m = new ObjectMapper();
                JsonNode rootNode = m.readTree(jsonString);
                for (JsonNode result : rootNode.path("results")) {
                    JsonNode LatLongNode = result.path("geometry").path("location");
                    LocationCoord = String.format("%s|%s", LatLongNode.path("lat").doubleValue(),
                            LatLongNode.path("lng").doubleValue());
                    break;
                }

            } catch (JsonProcessingException jpe) {
                System.out.println(jpe.getMessage());
            } catch (IOException ioe) {
                System.out.println(ioe.getMessage());
            } catch (Exception e) {
                System.out.println(e.getMessage());
            } finally {
                return LocationCoord;
            }
        } else {
            return LocationCoord;
        }
    }
}