parsemidlet.java

j2me实现xml格式文件的解析

package zqs;

import java.io.IOException;
import java.io.InputStream;

import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.midlet.MIDlet;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import org.xml.sax.SAXException;


public class ParseMIDlet extends MIDlet implements CommandListener,Runnable{

	private Display display=null;
	private Form form=null;
	private Thread thread=null;
	private Command parseCd=new Command("Parse",Command.OK,1);
	public ParseMIDlet() {
		// TODO Auto-generated constructor stub
	
	}

	protected void destroyApp(boolean arg0) {
		// TODO Auto-generated method stub

	}

	protected void pauseApp() {
		// TODO Auto-generated method stub
		

	}

	protected void startApp()  {
		System.out.println("start");
		
		if(true)
		{
			form=new Form("first_jaxt!!");
			display=Display.getDisplay(this);
			InputStream is=getClass().getResourceAsStream("/document.xml");
			try{
				byte[] data=new byte[is.available()];
				is.read(data);
				form.append(new String(data));
				form.addCommand(parseCd);
			}catch(IOException e){
				e.printStackTrace();
			    form.append(e.getMessage());
			}
			form.addCommand(new Command("exit",Command.EXIT,1));
			form.setCommandListener(this);
		}
		display.setCurrent(form);
		// TODO Auto-generated method stub

	}
	public void commandAction(Command cd,Displayable display)
	{
		if(cd.getCommandType()==Command.EXIT)
		{
			destroyApp(false);
			notifyDestroyed();
		}
		else
		{
			if(cd==parseCd)
			{
				thread=new Thread(this);
				thread.start();
			}
		}
	}

	public void run()
	{
		System.out.print("ddddd");
		form.deleteAll();
		form.append("parsing xml file!!!");
		SAXParserFactory instance =SAXParserFactory.newInstance();
		try
		{
			SAXParser parser=instance.newSAXParser();
			InputStream is=getClass().getResourceAsStream("/document.xml");
			parser.parse(is, new MyHandler(form));
			
		}catch(ParserConfigurationException e)
		{
			e.printStackTrace();
		}catch(SAXException e)
		{
			e.printStackTrace();
		}catch(IOException e)
		{
			e.printStackTrace();
		}
		form.removeCommand(parseCd);
		display.setCurrent(form);
	}
	

}