package apps;

import java.net.*;
import java.io.*;

import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;

import org.jdom.Attribute;
import org.jdom.Comment;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;


  

public class Application {



public  String hostName = "localhost/";
public String webServerStr = "http://krishna/servlet/MyServlet?xml=";

String resource="session";
String userid="kris";
String password="kris";


String xml="";


public void init()
        {
        log("Constructing the xml stream");
        String doc;

        doc =createDocument();
        webServerStr = webServerStr+doc;

              
         try
        {
            // connect to the servlet
	       System.out.println("Connecting to servlet...");
           URL url = new URL( webServerStr );
            URLConnection servletConnection = url.openConnection();  
	        System.out.println("Connected");

            // inform the connection that we will send output and accept input
                servletConnection.setDoInput(true);          
	        servletConnection.setDoOutput(true);
	        
            // Don't used a cached version of URL connection.
            servletConnection.setUseCaches (false);

            // Specify the content type that we will send binary data
            servletConnection.setRequestProperty
                ("Content-Type", "application/octet-stream");
                    
	        	        	                       
	        // send the student object to the servlet using serialization
	        sendToServlet(servletConnection, webServerStr);
	        	        
	        // now, let's read the response from the servlet.
	        // this is simply a confirmation string
               readServletResponse(servletConnection);	        
           
            
            
	    }
	    catch (Exception e)
	    {
	        System.out.println("ERROR " +e.toString());    
	    }

        }


public static String createDocument() 
    {
    String xmlString="";
    
        // Create the root element
        Element sessionElement = new Element("session");
        //create the document
        
        Document myDocument = new Document(sessionElement);
            
        
        //add a comment
        sessionElement.addContent(new Comment("Session Element "));

        //add some child elements
        /*
         * Note that this is the first approach to adding an element and
         * textual content.  The second approach is commented out.
         */
        Element resource = new Element("resource");
        resource.addContent("session");
        sessionElement.addContent(resource);
        
        //add some more elements
        sessionElement.addContent(new Element("useridElement").addContent("kris"));
        sessionElement.addContent(new Element("passwordElement").addContent("kris"));
        

          //print the document

        try 
        {
            XMLOutputter outputter = new XMLOutputter("  ", true);
            outputter.output(myDocument, System.out);
            System.out.println("XMLOUtputter created");
            xmlString=outputter.outputString(myDocument);
        } 
        catch (java.io.IOException e) 
        {
            e.printStackTrace();
        }
        
                        
        //return myDocument;
        return xmlString;
    }

 

        
public void sendToServlet(URLConnection servletConnection, String ourRequest)
{
 ObjectOutputStream outputToServlet = null;
         
        try
        {
	        // send the request object to the servlet 
	        log("Sending the request to the servlet...");
	        outputToServlet = new ObjectOutputStream(servletConnection.getOutputStream());
	        
	        // serialize the object
	        //outputToServlet.writeObject(ourRequest);
	        
	        outputToServlet.flush();	        
	        outputToServlet.close();
	        System.out.println("Complete.");
        }
        catch (IOException e)
        {
                 System.out.println("Bombed in sendToServlet()");
        }
 

}

protected void log(String msg)
	{
	    System.out.println("Message === " +msg );    
	}


        /**
	 *  Reads a response from the servlet.
	 */
    public void readServletResponse(URLConnection servletConnection)
    {
        BufferedReader inFromServlet = null;
        
        try
        {
	        // now, let's read the response from the servlet.
	        // this is simply a confirmation string
	        inFromServlet = new BufferedReader(new InputStreamReader(servletConnection.getInputStream()));
	        
            String str;
            while (null != ((str = inFromServlet.readLine())))
            {
                System.out.println("Reading servlet response: " + str);
            }
            
            inFromServlet.close();
        }
        catch (IOException e)
        {
          log(e.toString()); 
          log("readServletResponse problem");   
        }
    } 

    public static void main(String[] args) 
    {
     Post post = new Post();
     post.init();   
       
    }
}