mytestsimple.java

Java下Comet的实现框架Pushlet例子。 实现实时推送数据到客户端。 服务器每隔30-500MS产生一个随机数

package hfut.wispy.Client;


import nl.justobjects.pushlet.client.PushletClient;
import nl.justobjects.pushlet.client.PushletClientListener;
import nl.justobjects.pushlet.core.Event;
import nl.justobjects.pushlet.core.Protocol;
import nl.justobjects.pushlet.util.PushletException;

public class MyTestSimple implements PushletClientListener, Protocol {

	private static String SUBJECT = "/wyyCity";

	private static final String MODE = MODE_STREAM;

	public MyTestSimple(String aHost, int aPort) {
		// Create and start a Pushlet client; we receive callbacks
		// through onHeartbeat() and onData().
		try {
			PushletClient pushletClient = new PushletClient(aHost, aPort);
			pushletClient.setDebug(true);
			pushletClient.join();
//			pushletClient.listen(this, MODE, SUBJECT);
			 pushletClient.joinListen(this, MODE, SUBJECT);
			System.out.println("here pushletClient started");
			p("pushletClient started MyTest");
		} catch (PushletException pe) {
			p("Error in setting up pushlet session pe=" + pe);
		}
	}

	/** Error occurred. */
	public void onError(String message) {
		p("onAbort onError: " + message);
	}

	/** Abort event from server. */
	public void onAbort(Event theEvent) {
		p("onAbort received: " + theEvent.toString());
	}

	/** Data event from server. */
	public void onData(Event theEvent) {
		// Calculate round trip delay

		// p("theEvent.toXML() : " + theEvent.toXML());
		// p("here is the city :" + theEvent.getField("city"));
		p("number : " + theEvent.getField("number"));
		p("city : " + theEvent.getField("city"));
		p("value : " + theEvent.getField("value"));
		
	}

	

	/** Heartbeat event from server. */
	public void onHeartbeat(Event theEvent) {
		p("onHeartbeat received: " + theEvent.toString());
	}

	/** Generic print. */
	public static void p(String s) {
		System.out.println("[MyTest] " + s);
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO 自动生成方法存根
		new MyTestSimple("localhost", 8080);
	}

}