Java开发网 - 请教aglet高手

Topic: 请教aglet高手

1.请教aglet高手

Posted by: hly_gyx
Posted on: 2005-07-20 11:38

从一个应用程序启动一个aglet的时候，我编写的serverApp.java如下，import com.ibm.aglet.*;
import com.ibm.aglet.system.*;
import java.net.URL;

import java.util.Properties;
import com.ibm.awb.util.Resource;
import com.ibm.atp.daemon.Daemon;

public class ServerApp extends ContextAdapter {

public void agletCreated(ContextEvent ev) {
  System.out.println("Aglet Created : " + ev.getAgletProxy());
}
public void agletCloned(ContextEvent ev) {
  System.out.println("Aglet Cloned : " + ev.getAgletProxy());
}
public void agletArrived(ContextEvent ev) {
  System.out.println("Aglet Arrived : " + ev.getAgletProxy());
}
public void agletActivated(ContextEvent ev) {
  System.out.println("Aglet Activated : " + ev.getAgletProxy());
}

public void agletDisposed(ContextEvent ev) {
  System.out.println("Aglet Disposed : " + ev.getAgletProxy());
}
public void agletDispatched(ContextEvent ev) {
  System.out.println("Aglet Dispatched : " + ev.getAgletProxy());
}
public void agletDeactivated(ContextEvent ev) {
  System.out.println("Aglet Deactivated : " + ev.getAgletProxy());
}
public void agletReverted(ContextEvent ev) {
  System.out.println("Aglet Reverted : " + ev.getAgletProxy());
}

public void showMessage(ContextEvent ev) {
  System.out.println("message : " + ev.getMessage());
}
public static AgletProxy startAglet(AgletContext cxt,String AgletName) throws java.lang.Exception {

   AgletProxy p = cxt.createAglet(null,AgletName, null);
   return p;
   }
public static AgletContext initStart() throws java.lang.Exception {

  Daemon daemon = Daemon.init(null);

  daemon.setAccessLogStream(System.out);
  daemon.setMessageLogStream(System.out);
  daemon.setErrorLogStream(System.err);

    AgletRuntime runtime = AgletRuntime.init(null);

    AgletContext cxt = runtime.createAgletContext("test");
  cxt.addContextListener(new ServerApp());

  // If you want to allow incoming aglets to use GUI.
  // initialize gui....
String initializerName=System.getProperty("aglets.logger.class","org.aglets.log.quietInitializer");
Class.forName(initializerName);
  try {
   Class.forName("sun.awt.image.JPEGImageDecoder");
   Class.forName("sun.audio.AudioPlayer");
  } catch (Exception ex) {
   ex.printStackTrace();
  }
  try {
   Class.forName("sun.awt.PlatformFont"); // for 1.1
  } catch (Exception ex) {
   ex.printStackTrace();
  }
  try {
   new java.awt.Frame().addNotify();
  } catch (Exception ex) {
   ex.printStackTrace();
  } finally {
  }

  try {
   Class.forName("sun.awt.ScreenUpdater");
  } catch (Throwable t) {
  }

    daemon.start("aglets");

    cxt.start();
  return cxt;

}
}

运行的时候会出现以下错误提示：
java.lang.NullPointerException
at ecmAglet.ServerApp.startAglet(ServerApp.java:69)
at ecmAglet.ecmLanQue.service(ecmLanQue.java:228)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:588)
at sun.servlet.http.HttpServerHandler.sendResponse(HttpServerHandler.jav
a:165)
at sun.servlet.http.HttpServerHandler.handleConnection(Compiled Code)
at sun.servlet.http.HttpServerHandler.run(HttpServerHandler.java:90)
at java.lang.Thread.run(Thread.java:472)
哪位高手可指点一二。谢谢

2.Re:请教aglet高手 [Re: hly_gyx]	Copy to clipboard
Posted by: liugongquan Posted on: 2005-08-26 20:17 朋友,这个程序没有main()方法,你是怎么运行的?

3.Re:请教aglet高手 [Re: hly_gyx]

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Posted by: icefiregll
Posted on: 2005-09-17 08:34

不知仁兄的问题解决没有，不过一个明显的问题如楼上所说的没有main方法。这个aglet很头痛，资料太少了。我也有个问题向hly_gyx 兄请教，我是在一个java　application中想要呼叫一个aglet并派遣之。程序的部分代码如下。
import com.ibm.aglet.*;
import com.ibm.aglet.system.Aglets;
import bookms.SuperAglet;
public class AddInfo extends Panel implements ActionListener, ItemListener{
　.....
try {
AgletProxy proxy = Aglets.createAglet("atp://" + InetAddress.getLocalHost().getHostAddress(),null,"bookms.SuperAglet",null);
.......
proxy = proxy.dispatch(new URL(dataLocation));}
省略了很多无关紧要的步骤，因为程序编译通过了。并且运行时是在try那儿出问题的。这个程序也没有main因为main在其他主程序里，这只是个界面而已。出现问题如下：
java.lang.NoClassDefFoundError
at com.ibm.aglet.system.Aglets.createAglet(Unknown Source)
at AddInfo.actionPerformed(AddInfo.java:242)
at java.awt.Button.processActionEvent(Unknown Source)
at java.awt.Button.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)

at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
。该怎么解决是不是也要extends ContextAdapter 才行呀。急盼解决，对回复者万分感谢！！！！

4.Re:请教aglet高手 [Re: hly_gyx]	Copy to clipboard
Posted by: hly_gyx Posted on: 2005-09-17 19:48 你得creatAglet（）方法是那个类里的？

5.Re:请教aglet高手 [Re: hly_gyx]	Copy to clipboard
Posted by: hly_gyx Posted on: 2005-09-17 19:50 icefiregll ，希望你能留下qq，我们探讨一下，因为我又遇到了新的问题呵呵

6.Re:请教aglet高手 [Re: hly_gyx]	Copy to clipboard
Posted by: hly_gyx Posted on: 2005-09-17 19:55 icefiregll ，希望你能留下qq，我们探讨一下，因为我又遇到了新的问题呵呵

7.Re:请教aglet高手 [Re: hly_gyx]	Copy to clipboard
Posted by: icefiregll Posted on: 2005-09-17 21:32 这么快就有回应了。我没有qq,很落伍吧，我经常用POPO，如果你也有泡泡号的话。我的泡泡帐号是icefireblood，用户名是inaid。你把邮箱留下吧。我的是 gonglinliln@126.com

8.Re:请教aglet高手 [Re: hly_gyx]	Copy to clipboard
Posted by: icefiregll Posted on: 2005-09-17 21:36 因为这个creatAglet（）是一个静态方法，所以接用Aglets类来调用。应该没问题吧。

9.Re:请教aglet高手 [Re: hly_gyx]	Copy to clipboard
Posted by: hly_gyx Posted on: 2005-09-18 20:33 我已经把你加到popo里面的，不过提示：你不允许我给你发消息。呵呵我的邮箱是meatkitty@sina.com