mupomat.utility.LongLatService.java Source code

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Here is the source code for mupomat.utility.LongLatService.java

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/*
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package mupomat.utility;

import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.Writer;
import java.net.URLEncoder;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import mupomat.view.Mupomat;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.MultiThreadedHttpConnectionManager;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.lang.StringUtils;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;

/**
 *
 * @author SrKy
 */
public class LongLatService {

    private static final String GEOCODE_REQUEST_URL = "http://maps.googleapis.com/maps/api/geocode/xml?sensor=false&";
    private static final HttpClient httpClient = new HttpClient(new MultiThreadedHttpConnectionManager());
    public String strLatitude;
    public String strLongtitude;

    public String getStrLatitude() {
        return strLatitude;
    }

    public void setStrLatitude(String strLatitude) {
        this.strLatitude = strLatitude;
    }

    public String getStrLongtitude() {
        return strLongtitude;
    }

    public void setStrLongtitude(String strLongtitude) {
        this.strLongtitude = strLongtitude;
    }

    public void getLongitudeLatitude(String address) {
        try {
            StringBuilder urlBuilder = new StringBuilder(GEOCODE_REQUEST_URL);
            if (StringUtils.isNotBlank(address)) {
                urlBuilder.append("&address=").append(URLEncoder.encode(address, "UTF-8"));
            }

            final GetMethod getMethod = new GetMethod(urlBuilder.toString());
            try {
                httpClient.executeMethod(getMethod);
                Reader reader = new InputStreamReader(getMethod.getResponseBodyAsStream(),
                        getMethod.getResponseCharSet());

                int data = reader.read();
                char[] buffer = new char[1024];
                Writer writer = new StringWriter();
                while ((data = reader.read(buffer)) != -1) {
                    writer.write(buffer, 0, data);
                }

                String result = writer.toString();
                System.out.println(result.toString());

                DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
                DocumentBuilder db = dbf.newDocumentBuilder();
                InputSource is = new InputSource();
                is.setCharacterStream(new StringReader("<" + writer.toString().trim()));
                Document doc = db.parse(is);

                strLatitude = getXpathValue(doc, "//GeocodeResponse/result/geometry/location/lat/text()");
                System.out.println("Latitude:" + strLatitude);

                strLongtitude = getXpathValue(doc, "//GeocodeResponse/result/geometry/location/lng/text()");
                System.out.println("Longitude:" + strLongtitude);

            } finally {
                getMethod.releaseConnection();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public String getXpathValue(Document doc, String strXpath) throws XPathExpressionException {
        XPath xPath = XPathFactory.newInstance().newXPath();
        XPathExpression expr = xPath.compile(strXpath);
        String resultData = null;
        Object result4 = expr.evaluate(doc, XPathConstants.NODESET);
        NodeList nodes = (NodeList) result4;
        for (int i = 0; i < nodes.getLength(); i++) {
            resultData = nodes.item(i).getNodeValue();
        }
        return resultData;

    }

}