Client ruft Webservice auf->Fehlerhaft

[Saskia21]

Hi
Ich arbeite mit Tomcatserver 5.5 und Axis. Meine Entwicklungsumgebung ist Eclipse.
Ich habe einen Client generiert, aber nicht durch die wsdl-Datei, sondern per Hand.

Mein Webservice-Methode sieht so aus:

public String checkUpdate(String date, String username, String password){
       String hashcode = checkUpdate.checkUpdate(date, username, password);
       return hashcode;
}

Der Client soll diese Methode dann so ungefähr aufrufen

package sd.server.webservice.client;

import java.net.MalformedURLException;
import java.net.URL;
import java.rmi.RemoteException;

import javax.xml.rpc.ServiceException;

import org.apache.axis.client.Call;
import org.apache.axis.client.Service;

public class Client {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		try {
			String endpoint = "http:localhost:8081/sdnet/services/Webserver";
			Service service = new Service();
			Call call = (Call) service.createCall();
			try {
				call.setTargetEndpointAddress(new URL(endpoint));
				call.setOperation("checkUpdate");
				
				Object [] myParams = new Object[3];
				myParams[0] = new String("2008-02-01 13:07:00");
				myParams[1] = new String("InternetBenutzer");
				myParams[2] = new String("1ttu2sz");
			
				
				try {
					Object bla = call.invoke(myParams);
					//System.out.println(hashCode);
				} catch (RemoteException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				
			} catch (MalformedURLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		} catch (ServiceException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

}

Aber ich bekomme die Fehlermeldung:

AxisFault
 faultCode: {http://xml.apache.org/axis/}HTTP
 faultSubcode: 
 faultString: (400)Bad Request
 faultActor: 
 faultNode: 
 faultDetail: 
	{}:return code:  400
&!DOCTYPE HTML PUBLIC &-//IETF//DTD HTML 2.0//EN&&
&html&&head&
&title&400 Bad Request&/title&
&/head&&body&
&h1&Bad Request&/h1&
&p&Your browser sent a request that this server could not understand.&br /&
&/p&
&/body&&/html&

	{http://xml.apache.org/axis/}HttpErrorCode:400

(400)Bad Request
	at org.apache.axis.transport.http.HTTPSender.readFromSocket(HTTPSender.java:744)
	at org.apache.axis.transport.http.HTTPSender.invoke(HTTPSender.java:144)
	at org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:32)
	at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118)
	at org.apache.axis.SimpleChain.invoke(SimpleChain.java:83)
	at org.apache.axis.client.AxisClient.invoke(AxisClient.java:165)
	at org.apache.axis.client.Call.invokeEngine(Call.java:2784)
	at org.apache.axis.client.Call.invoke(Call.java:2767)
	at org.apache.axis.client.Call.invoke(Call.java:2443)
	at org.apache.axis.client.Call.invoke(Call.java:2366)
	at org.apache.axis.client.Call.invoke(Call.java:1812)
	at sd.server.webservice.client.Client.main(Client.java:34)

Kann ich die Parametern beim Client nicht so übergebe?

LG