watcherclient.java

移动Agent编程IBM开发的移动Agent编程工具Aglet 采用纯Java编写可移植性好这是用它写的一些例子用于初级入门

/*
 * @(#)WatcherClient.java
 *
 * 03L7246 (c) Copyright IBM Corp. 1996, 1998
 *
 * The program is provided "as is" without any warranty express or
 * implied, including the warranty of non-infringement and the implied
 * warranties of merchantibility and fitness for a particular purpose.
 * IBM will not be liable for any damages suffered by you as a result
 * of using the Program. In no event will IBM be liable for any
 * special, indirect or consequential damages or lost profits even if
 * IBM has been advised of the possibility of their occurrence. IBM
 * will not be liable for any third party claims against you.
 */

import com.ibm.aglet.*;
import com.ibm.aglet.system.Aglets;
import java.net.URL;

import java.util.Properties;

/**
 * The WatcherClient example illustrates how to write an application program
 * with Aglets. With this API, you can create and dispatch an aglet,
 * send the aglet a message and receive a result from it.
 * To run this example, you need the server and WatcherSlave Aglet.
 *
 * @version     1.00    $Date: 1999/10/27 05:16:39 $
 * @author      Mitsuru Oshima
 * @see aglet.system.Aglets
 * @see examples.watcher.ProxyWatcher
 * @see examples.watcher.WatcherSlave
 */
public class WatcherClient {

    public static void main(String a[]) throws java.lang.Exception {

		if (a.length < 1) {
	    	System.out.println("WatcherClient firstAddress secondAddress ...");
	    	return;
		}

		System.out.println("========= Creating in " + a[0]);

		AgletProxy proxy = Aglets.createAglet(a[0],
					      null,
					      "keio.ics.nak.watcher.WatcherSlave",
					      null);

		System.out.println((String)proxy.sendMessage(new Message("getInfo")));

		int i = 1;
		while(a.length > i) {
	    	try {
				System.out.println("========== Dispatching to " + a[i]);
				proxy = proxy.dispatch( new URL(a[i++]) );
				String str = (String)proxy.sendMessage(new Message("getInfo"));
				System.out.println(str);
	    	} catch (Exception ex) {
				ex.printStackTrace();
				break;
	    	}
		}
		proxy.dispose();
    }
}