cz.muni.fi.pb138.callboxesmap.CallboxesServlet.java Source code

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Here is the source code for cz.muni.fi.pb138.callboxesmap.CallboxesServlet.java

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package cz.muni.fi.pb138.callboxesmap;

import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.json.JSONObject;
import org.json.XML;
import org.w3c.dom.Document;

/**
 *
 * @author Eduard Tomek
 * @see javax.servlet.http.HttpServlet
 */
public class CallboxesServlet extends HttpServlet {

    private final CallboxesXMLClass callboxes = new CallboxesXMLClass();

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.setCharacterEncoding(CallboxesXMLClass.CHARACTER_ENCODING);
        PrintWriter writer = resp.getWriter();
        writer.append(getJsonCallboxes().toString());
    }

    private JSONObject getJsonCallboxes() {
        Document document = callboxes.getDocument();
        DOMSource domSource = new DOMSource(document);
        StringWriter writer = new StringWriter();
        StreamResult result = new StreamResult(writer);
        TransformerFactory tf = TransformerFactory.newInstance();
        try {
            Transformer transformer = tf.newTransformer();
            transformer.transform(domSource, result);
        } catch (TransformerException ex) {
            ex.printStackTrace();
        }

        JSONObject json = XML.toJSONObject(writer.toString());
        return json;
    }

}