Questions while calling JNI method in Tuscany service

[Tyrone]

Hi,

I have a JNI method and should call this in my Tuscany Service.
It is like this..

@Service(MyService.class)
public class MyServiceImpl{
    ...
    public String myMethod(String text){
        ...
        JNIClass.myJNIMethod(text);  // call JNI static method (in windows
platform, call funciton in native dll)
        ...
    }
}

I wrote a java program to start the service, and call it, like this

public class ServiceClient{
    public static void main(String[] args){
          Node node =
NodeFactory.newInstance().createNode("MyService.composite");
          node.start();
          MyService myService = ((Client)node).getService(MyService.class,
"MyServiceComponent");
          myService.myMethod("text");
    }
}

In this way, the service  works and client can get result of myMethod.
But when I use binding.ws in composite file and call the service via a web
service client,
It just stops at calling JNI method, and no error or exception message.
I have searched messages in mailing list, but no relevent ones.
I really need some help. Any one can tell me why and how to solve this?

Thanks very much,
Tyrone