JAvaがBO(レポート)を呼び出して発表したWebserviceは何も返さなかったのはどういうことですか?

public static void main(String[] args) {
  try {
      System.out.println(getResult());
     } catch (MalformedURLException e) {
      e.printStackTrace();
     } catch (RemoteException e) {
      e.printStackTrace();
     } catch (ServiceException e) {
      e.printStackTrace();
     } catch (SOAPException e) {
      e.printStackTrace();
     }
 }
 
 public static String getResult() throws ServiceException, MalformedURLException, RemoteException, SOAPException{
  String ret="";
  String login = "administrator";
        String password = "admin!@#";
        String year = "2004";
        String State = "DC";
     try {
   String endpoint = "http://192.168.1.111:8180/dswsbobje/qaawsservices/biws?WSDL=1&cuid=AcZ.DtvBDHpNq8Czi54Uzms";
   //       (service)  (call)
   Service service = new Service();
   Call call = (Call)service.createCall();//   service  call  
   //   service  URL
   call.setTargetEndpointAddress(new java.net.URL(endpoint));
   call.setOperationName(new QName("mytest","runQueryAsAService"));
   //Add  net       "http://tempuri.org/"       Namespace    ,      
   call.addParameter(new QName("mytest","login"),org.apache.axis.encoding.XMLType.XSD_STRING, javax.xml.rpc.ParameterMode.IN);
   call.addParameter(new QName("mytest","password"),org.apache.axis.encoding.XMLType.XSD_STRING, javax.xml.rpc.ParameterMode.IN);
   call.addParameter(new QName("mytest","year"),org.apache.axis.encoding.XMLType.XSD_STRING, javax.xml.rpc.ParameterMode.IN);
   call.addParameter(new QName("mytest","State"),org.apache.axis.encoding.XMLType.XSD_STRING, javax.xml.rpc.ParameterMode.IN);
   
     call.setUseSOAPAction(true);
   call.setReturnType(org.apache.axis.encoding.XMLType.XSD_STRING); //       
   call.setSOAPActionURI("mytest/runQueryAsAService"); //                  Add,      
   // Object        ，   "This is Test!",  processService(String arg)
   ret = (String)call.invoke(new Object[]{login,password,year,State});
   System.out.println("--------"+ret.length());
   
  }catch (Exception e){
   System.err.println(e.toString());
  }
  return ret;
 }