Anytime I call the Method from the Web Service, the Client gets a NullPointerException.
These are the results I got from testing:
The tool "SoapUI" shows that the WebService works and returns the expected values
None of the variables is null
The returned value from the WebService doesn't seem to reach the client
The client successfully connects to the WebService
Exception:
javafx.fxml.LoadException:
... Not Important ...
Caused by: java.lang.NullPointerException
at com.sun.xml.internal.bind.v2.ClassFactory.create0(Unknown Source)
at com.sun.xml.internal.bind.v2.ClassFactory.create(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.reflect.Lister$CollectionLister.startPacking(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.reflect.Lister$CollectionLister.startPacking(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.reflect.NullSafeAccessor.get(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.reflect.Accessor.getUnadapted(Unknown Source)
at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl$5.get(Unknown Source)
at com.sun.xml.internal.ws.db.glassfish.RawAccessorWrapper.get(Unknown Source)
at com.sun.xml.internal.ws.client.sei.ResponseBuilder$DocLit$PartBuilder.readResponse(Unknown Source)
at com.sun.xml.internal.ws.client.sei.ResponseBuilder$DocLit.readResponse(Unknown Source)
at com.sun.xml.internal.ws.client.sei.StubHandler.readResponse(Unknown Source)
at com.sun.xml.internal.ws.db.DatabindingImpl.deserializeResponse(Unknown Source)
at com.sun.xml.internal.ws.db.DatabindingImpl.deserializeResponse(Unknown Source)
at com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(Unknown Source)
at com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(Unknown Source)
at com.sun.xml.internal.ws.client.sei.SEIStub.invoke(Unknown Source)
at com.sun.proxy.$Proxy40.getOnlineUser(Unknown Source)
at application.Controller.init(Controller.java:141)
at application.Controller.initialize(Controller.java:74)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2548)
... 17 more
My WebService:
@WebService
@SOAPBinding(style = javax.jws.soap.SOAPBinding.Style.DOCUMENT, use=javax.jws.soap.SOAPBinding.Use.LITERAL, parameterStyle=javax.jws.soap.SOAPBinding.ParameterStyle.WRAPPED)
public interface CClientService {
public ObservableList<Benutzer> getOnlineUser(int id);
}
My Web Service Impl:
@WebService
public class CClientServiceImpl implements CClientService {
private BenutzerService benutzerService;
private Notification notification;
@Override
public ObservableList<Benutzer> getOnlineUser(int id) {
return benutzerService.getAllOnlineBenutzerWithoutMe(id);
}
}
My Notification:
public class Notification extends Observable {
@Override
public synchronized void addObserver(Observer o) {
notifyTheObservers(o);
super.addObserver(o);
}
@Override
public synchronized void deleteObserver(Observer o) {
super.deleteObserver(o);
notifyTheObservers(o);
}
public void notifyTheObservers(Object arg){
setChanged();
super.notifyObservers(arg);
}
}
My BenutzerService:
public class BenutzerService extends Repository<Benutzer> {
public ObservableList<Benutzer> getAllOnlineBenutzerWithoutMe(int id){
ObservableList<Benutzer> listeAllerBenutzer = FXCollections.observableArrayList();
listeAllerBenutzer.setAll(em.createNamedQuery("Benutzer.findAllOnlineWithoutMe",Benutzer.class).setParameter("b_id", id).getResultList());
return listeAllerBenutzer;
}
}
My Repository:
public abstract class Repository<T> {
protected EntityManagerFactory emf = Persistence.createEntityManagerFactory("unitname");
protected EntityManager em = emf.createEntityManager();
abstract public void create(T object);
abstract public void update(T object);
abstract public void delete(T object);
abstract public T findById(int id);
abstract public ObservableList<T> getAll();
}
My Client:
public class CClient implements Observer {
private Client client;
private final String host = "localhost";
private final String port = "8080";
private final String path = "MyCoolPath?wsdl";
private CClientService cclientService;
public CClient(){
client = new Client();
this.cclientService = getService();
}
public Client getClient() {
return client;
}
@Override
public void update(Observable o, Object arg) {
switch(arg.getClass().getSimpleName()){
case "String":
System.out.println("Got it, my String.");
break;
default:
System.out.println(arg.getClass().getSimpleName()+"<<<<<<<<");
break;
}
}
private CClientService getService(){
URL urlAdresse = null;
try {
urlAdresse = new URL("http://"+ host + ":"+ port + "/" + path);
} catch (MalformedURLException e) {
System.out.println("No Connection!");
e.printStackTrace();
}
QName qnameService = new QName("http://webservice/",
"CClientServiceImplService");
QName qnamePort = new QName("http://webservice/",
"CClientServiceImplPort");
Service service = Service.create(urlAdresse,qnameService);
CClientService ws = service.getPort(qnamePort,CClientService.class);
return ws;
}
public CClientService getCclientService() {
return this.cclientService;
}
}
The Web Service and the Client are in a different Project.
First of all, I changed the Annotation @WebService from my "CClientServiceImpl.class" to @WebService(endpointInterface="webservice.CClientService"), because I realized with an System.out.println(ws.get...().size()); that I get the Error Message "Unkown Port", after I changed the Annotation the "Unknown Port" Error was solved.
The Problem was, that I want to return an "ObservableList"... I changed it to "List" (at "CClientServiceImpl.class" and "BenutzerService.class") and the Problem was solved... I checked everything, but not to try what happens if I get a normal java.util.List.
So My WebService Interface Method looks like this:
public List<Benutzer> getOnlineUser(int id);
and the Implementation like this:
@Override
public List<Benutzer> getOnlineUser(int id) {
return benutzerService.getAllOnlineBenutzerWithoutMe(id);
}
Finally my Service was changed to this:
public List<Benutzer> getAllOnlineBenutzerWithoutMe(int id){
List<Benutzer> listeAllerBenutzer = FXCollections.observableArrayList();
listeAllerBenutzer = (em.createNamedQuery("Benutzer.findAllOnlineWithoutMe",Benutzer.class).setParameter("b_id", id).getResultList());
return listeAllerBenutzer;
}