这是哪里的错?谢谢!

Question

贴出来看看。好象是用了ibm 的package 后需要 context 的论正。

Answer 1

源程序如下:
package myagletserver;
import java.net.URL;
import java.net.UnknownHostException;
import java.io.*;
import java.util.Properties;
import java.util.StringTokenizer;
import java.util.Vector;
import java.util.Enumeration;
import java.security.cert.Certificate;import com.ibm.maf.*;
import com.ibm.aglet.*;
import com.ibm.aglet.system.*;
import com.ibm.aglets.MAFAgentSystem_AgletsImpl;
import com.ibm.aglets.tahiti.Tahiti;
import com.ibm.aglets.tahiti.UserManager;
import com.ibm.aglets.tahiti.CommandLine;
import com.ibm.aglets.tahiti.TahitiDaemon;import com.ibm.awb.misc.FileUtils;
import com.ibm.awb.misc.Resource;
import com.ibm.awb.misc.LogStream;
import com.ibm.awb.misc.Opt;
import org.aglets.log.LogCategory;
import org.aglets.log.LogInitializer;/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company: </p>
 * @author unascribed
 * @version 1.0
 */public class MyServer {
    static private Opt options[] = {
        Opt.Entry("-protocol", "maf.protocol", null),
    };
    static public void main(String args[]) {       String initializerName = System.getProperty("aglets.logger.class",
            "org.aglets.log.quiet.QuietInitializer" ); try{
      Class.forName(initializerName);
      LogCategory cat = LogInitializer.getCategory 
                       (MyServer.class.getName());
     cat.info("Logging system initialized!");     String username="aglet_key",password="aglets",protocol="atp";
     Opt.setopt(options);
     runtime = AgletRuntime.init(args);    runtime.authenticateOwner(username, password);   Name system_name = new Name(username.getBytes(), null, (short)1);   MAFAgentSystem maf_system = new MAFAgentSystem_AgletsImpl
     (runtime);    MAFAgentSystem.initMAFAgentSystem(maf_system, "atp");    Tahiti.installFactories();   
   // Creates a named context. 
    AgletContext cxt = runtime.createAgletContext("");
     ContextListener listener = new ContextAdapter () {
          public void agletArrived(ContextEvent ev) {
              AgletProxy proxy = ev.getAgletProxy();
                try {
                    System.out.println("Aglet is arriving."+
                                       proxy.getAgletInfo());
                    } catch (InvalidAgletException ex)
                      {
                          ex.printStackTrace();
                      }
            }            public void agletDispatched(ContextEvent ev)
            {
                AgletProxy proxy = ev.getAgletProxy();
                try {
                    System.out.println("Aglet is leaving."+
                                       proxy.getAgletInfo());
                    } catch (InvalidAgletException ex)
                      {
                        ex.printStackTrace();
                      }
           }
       };**        cxt.addContextListener(listener);        Tahiti.installSecurity();        //
        // Start a context
        //
        cxt.start();        MAFAgentSystem.startMAFAgentSystem(maf_system, "atp");        //
        AgletProxy myAglet = cxt.createAglet(null, "MyAglet", null);        myAglet.sendMessage(new Message("startTrip"));
        }catch(Exception ff){ System.out.println("error"+ff.toString
                             ());}    }
}编译可以通过,但无法执行,
错误信息:java.security.AccessControlException: 
access denied (com.ibm.aglets.security.ContextPermission listener add)执行时出错的语句为:cxt.addContextListener(listener); 我用"**"在源程序中标出了.

Answer 2

我目前在家没有办法debug，也没有ibm package. 不过我猜想是不是cxt先要设置user 和 passwd. cxt 有没有这个方法 setUser or setPasswd .