I'm trying to write my first own webservice using EJBs (V3) in a JBoss 4.2.2. Building and deploying the webservice bean works fine, but when I try to access a web method with no parameters and no return type like this:

package test.de.laliluna.library;
import java.net.URL;
import javax.xml.namespace.QName;
import javax.xml.rpc.Service;
import javax.xml.rpc.ServiceFactory;
import de.laliluna.library.BookTestBean;

public class WebServiceTestClient
{
 public static void main(String[] args) throws Exception
 {
 URL url = new URL("http://localhost:8080/FirstEjb3Tutorial/BookTestBean?wsdl");
 QName qname = new QName("http://library.laliluna.de/", "BookTestBeanService");
 ServiceFactory factory = ServiceFactory.newInstance();
 Service service = factory.createService(url, qname);

 BookTestBean serviceEndpoint = (BookTestBean)service.getPort(BookTestBean.class);
 serviceEndpoint.test();
 }
}

it throws this exception:

Exception in thread "main" org.jboss.ws.WSException: Cannot obtain java type mapping for: {http://library.laliluna.de/}test
 at org.jboss.ws.metadata.builder.jaxrpc.JAXRPCMetaDataBuilder.processDocElement(JAXRPCMetaDataBuilder.java:627)
...
 at test.de.laliluna.library.WebServiceTestClient.main(WebServiceTestClient.java:18)

where the last line refers to "Service service = factory.createService(url, qname);"

My questions are:
1. I thought using JAX-WS and Annotations would take care of all the webservice-configuration-XML-SOAP stuff for me. Do I still need to manually specify a type mapping? How? Where?
2. The web method I try to access has neither parameters nor a return value. How can there be any types to map??

If you could make me friends with webservices again, they and I would really appreciate it.


From here: Server code.

package de.laliluna.library;
import java.rmi.Remote;
import java.util.Iterator;
import java.util.List;
import javax.ejb.Stateless;
import javax.jws.Oneway;
import javax.jws.WebMethod;
import javax.jws.WebService;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

@Stateless
@WebService
public class BookTestBean implements BookTestBeanLocal, BookTestBeanRemote, Remote
{
 @PersistenceContext
 EntityManager em;
 public static final String RemoteJNDIName = BookTestBean.class.getSimpleName() + "/remote";
 public static final String LocalJNDIName = BookTestBean.class.getSimpleName() + "/local";

 @WebMethod
 @Oneway
 public void test()
 {
 Book book = new Book(null, "My first bean book", "Sebastian");
 em.persist(book);
 Book book2 = new Book(null, "another book", "Paul");
 em.persist(book2);
 Book book3 = new Book(null, "EJB 3 developer guide, comes soon", "Sebastian");
 em.persist(book3);
 System.out.println("list some books");
 List someBooks = em.createQuery("from Book b where b.author=:name").setParameter("name", "Sebastian")
 .getResultList();
 for(Iterator iter = someBooks.iterator(); iter.hasNext() ;)
 {
 Book element = (Book)iter.next();
 System.out.println(element);
 }
 System.out.println("List all books");
 List allBooks = em.createQuery("from Book").getResultList();
 for(Iterator iter = allBooks.iterator(); iter.hasNext() ;)
 {
 Book element = (Book)iter.next();
 System.out.println(element);
 }
 System.out.println("delete a book");
 em.remove(book2);
 System.out.println("List all books");
 allBooks = em.createQuery("from Book").getResultList();
 for(Iterator iter = allBooks.iterator(); iter.hasNext() ;)
 {
 Book element = (Book)iter.next();
 System.out.println(element);
 }
 }
}