Hi,

Im trying to develop a simple webservice with "EJB 3.0" and a simple client.

I use:
- jboss-4.2.2.GA
- Eclipse

My two Server classes:

package myserv;

import javax.ejb.Remote;
import javax.ejb.Stateless;
import javax.jws.WebService;


@Stateless
@WebService(endpointInterface = "myserv.ICalculatorBean")
@Remote(ICalculatorBean.class)
public class CalculatorBean
{

 public int add(int a, int b)
 {
 return a+b;
 }

 public int subtract(int a, int b)
 {
 return a - b;
 }
}

package myserv;

import java.rmi.Remote;

import javax.jws.WebMethod;
import javax.jws.WebService;
import javax.jws.soap.SOAPBinding;
import javax.jws.soap.SOAPBinding.Style;

@WebService
@SOAPBinding(style = Style.RPC)
public interface ICalculatorBean extends java.rmi.Remote
{

 public int add(int a, int b);

 public int subtract(int a, int b);
}

package myclient;

import java.net.URL;

import javax.xml.namespace.QName;
import javax.xml.rpc.Service;
import javax.xml.rpc.ServiceFactory;

import myserv.*;

public class Client {
 public static void main(String[] args) throws Exception
 {
 System.out.println("Starting Test Client");
 URL url = new URL("http://127.0.0.1:8080/steffenwstest/CalculatorBean?wsdl");
 QName qname = new QName(
 "http://myserv/",
 "CalculatorBeanService");

 System.out.println("Creating a service Using: \n\t"
 + url + " \n\tand " + qname);
 ServiceFactory factory = ServiceFactory.newInstance();
 Service remote = factory.createService(url, qname);

 System.out.println("Obtaining reference to a proxy object");
 ICalculatorBean proxy = (ICalculatorBean) remote.getPort(ICalculatorBean.class);
 System.out.println("Accessed local proxy: " + proxy);


 System.out.println("9+8= " + proxy.add(9, 8));
 }
}

Exception in thread "main" java.lang.reflect.UndeclaredThrowableException
at $Proxy0.add(Unknown Source)
at myclient.Client.main(Client.java:30)
Caused by: java.rmi.RemoteException: Call invocation failed; nested exception is:
java.lang.UnsupportedOperationException: setProperty must be overridden by all subclasses of SOAPMessage
at org.jboss.ws.core.jaxrpc.client.CallImpl.invokeInternal(CallImpl.java:536)
at org.jboss.ws.core.jaxrpc.client.CallImpl.invoke(CallImpl.java:277)
at org.jboss.ws.core.jaxrpc.client.PortProxy.invoke(PortProxy.java:151)
... 2 more
Caused by: java.lang.UnsupportedOperationException: setProperty must be overridden by all subclasses of SOAPMessage
at javax.xml.soap.SOAPMessage.setProperty(Unknown Source)
at org.jboss.ws.core.soap.SOAPMessageImpl.<init>(SOAPMessageImpl.java:67)
at org.jboss.ws.core.soap.MessageFactoryImpl.createMessage(MessageFactoryImpl.java:161)
at org.jboss.ws.core.CommonSOAP11Binding.createMessage(CommonSOAP11Binding.java:59)
at org.jboss.ws.core.CommonSOAPBinding.bindRequestMessage(CommonSOAPBinding.java:156)
at org.jboss.ws.core.CommonClient.invoke(CommonClient.java:289)
at org.jboss.ws.core.jaxrpc.client.CallImpl.invokeInternal(CallImpl.java:517)
... 4 more

System.out.println("9+8= " + proxy.add(9, 8));