webservice运行Netlogo程序有问题,求帮忙

[Andy_2u]

我把我写的代码先打上来,看有没有人可以帮忙下.急需!先谢谢了
如果单独在机器上是可以直接运行Netlogo的软件的，但用webservice的时候出错

package Model;

import java.awt.EventQueue;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import javax.jws.WebMethod;
import javax.jws.WebService;
import org.nlogo.api.CompilerException;
import org.nlogo.app.App;

/**
*
* @author Andy2u
*/
@WebService
public class Artefactweb {

protected void createSimulatorInstance() {
// create a new netlogo instance
String[] arg = new String[0];
App.main(arg);

// open the model file
try {

EventQueue.invokeAndWait(new Runnable() {
public void run() {
try {
App.app
.open("Flocking.nlogo");
} catch (IOException ex) {
ex.printStackTrace();
}
}
});
} catch (InterruptedException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}



@WebMethod
public void init() {

// create a simulator instance
createSimulatorInstance();

try {

// set up the model
// the case of the RandomWalk model, create the agents with an
// initial position (0,0)
App.app.command("setup");


} catch (CompilerException e) {
e.printStackTrace();
}
}

@WebMethod
public void run() {
try {
// run the go procedure (here our policy is to run only one-by-one
App.app.command("go");
} catch (CompilerException e) {
e.printStackTrace();
}
}

public static void main (String[] args){
Artefact a = new Artefact();
a.init();
}
}

[Andy_2u]

运行出错的结果:
当调用方法init()时会出现:
init Method invocation


--------------------------------------------------------------------------------

Method parameter(s)
Type Value

--------------------------------------------------------------------------------

Service invocation threw an exception with message : null; Refer to the server log for more details


--------------------------------------------------------------------------------

Exceptions details : java.lang.reflect.InvocationTargetException

--------------------------------------------------------------------------------
javax.servlet.ServletException: java.lang.reflect.InvocationTargetException at org.glassfish.webservices.monitoring.WebServiceTesterServlet.doPost(WebServiceTesterServlet.java:330) at org.glassfish.webservices.monitoring.WebServiceTesterServlet.invoke(WebServiceTesterServlet.java:106) at org.glassfish.webservices.JAXWSServlet.doPost(JAXWSServlet.java:133) at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595) at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98) at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162) at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174) at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828) at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725) at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019) at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225) at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79) at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54) at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59) at com.sun.grizzly.ContextTask.run(ContextTask.java:71) at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532) at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513) at java.lang.Thread.run(Thread.java:662) Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.glassfish.webservices.monitoring.WebServiceTesterServlet.doPost(WebServiceTesterServlet.java:301) ... 29 more Caused by: javax.xml.ws.soap.SOAPFaultException: scala/ScalaObject at com.sun.xml.ws.fault.SOAP11Fault.getProtocolException(SOAP11Fault.java:193) at com.sun.xml.ws.fault.SOAPFaultBuilder.createException(SOAPFaultBuilder.java:126) at com.sun.xml.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:123) at com.sun.xml.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:93) at com.sun.xml.ws.client.sei.SEIStub.invoke(SEIStub.java:144) at $Proxy243.init(Unknown Source) ... 34 more

[Andy_2u]

请大家好好看下我的程序，帮下忙。谢谢了

[Andy_2u]

??一直没人回话吗?