HELP: Error while consuming Web Service: ClassCastException

Question

Hi,
I am trying to consume a web service that I deployed on Tomcat/Axis. Any guideline will be helpful. I generated stubs using WSDL2Java utility from Axis. The method I am trying to call is getFibo(), which returns an object FiboHolder. Unfortunately everytime it is throwing ClassCastException. I have couple of other methods in the service that returns int and int[] and both works fine. Could anyone please help why I am not able to consume the service when it is returning the object FiboHolder but works fine when I consume other methods of the service that returns int or int[]?
Following is my client code:
    FibonacciService service =  new FibonacciServiceLocator();
    FibonacciSoapBindingStub stub = (FibonacciSoapBindingStub) service.getfibonacci(new URL("http://localhost:8080/axis/services/fibonacci"));
    // Now use the service to get a stub to the service
    FiboHolder fibHold = stub.getFibo();  //code errors out at runtime here
    System.out.println(fibHold.getFibo1());Following is the error message I get:
org.apache.axis.AxisFault: java.lang.ClassCastException
AxisFault
faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Server.userException
faultSubcode:
faultString: java.lang.ClassCastException
faultActor:
faultNode:
faultDetail:
     {http://xml.apache.org/axis/}hostname:
Thanks,

Answer 1

Hi all,
Please throw some light into this issue i am getting the following exception.
com.sap.engine.services.webservices.jaxm.soap.accessor.NestedSOAPException: Problem in server response: Proxy Authentication Required.
I have given the proxy settings in the com.sap.portal.ivs.httpservice  in the portal and also
defined a proxy server in the Visual Administrator under Services -> Webservice Container -> HTTP Proxy Server
I am calling service in the following manner.
IPortalRuntimeResources runtime = PortalRuntime.getRuntimeResources();
   IService service = runtime.getService(IWS_P_Service.KEY);
   IWS_P_Service ws_service = (IWS_P_Service)service;
    Volumes from = new Volumes(Volumes.VOLUMES_KILOLITER_VALUE);
    Volumes to = new Volumes(Volumes.VOLUMES_LITER_VALUE);
    ChangeVolumeUnit cvu = new ChangeVolumeUnit(1200,from,to);
    // working upto here
     response.write("working");
     ChangeVolumeUnitResponse cvu_res = ws_service.ChangeVolumeUnit(cvu);
     double result = cvu_res.getChangeVolumeUnitResult();
     response.write(result+"");
It is working upto "working".
If any body has any solutions please post.
Thanks