请教彭老师 apache soap问题

     String sMethodName = "XXXXX";
      String sURL = "http://www.jdon.com/";
      String sSOAPAction = "http://www.jdon.com/XXXX";

      Service service = new Service();
      Call call = (Call) service.createCall();
      call.setUseSOAPAction(true);
      String endpoint = "http://www.jdon.com/XXXX.asmx?wsdl";

      call.setTargetEndpointAddress(new java.net.URL(endpoint));

      call.setOperationName(new QName(sURL, sMethodName));
      call.addParameter("StringParam1", org.apache.axis.Constants.XSD_STRING,
                        ParameterMode.IN);
      call.addParameter("StringParam2", org.apache.axis.Constants.XSD_STRING,
                        ParameterMode.IN);
      call.setReturnType(org.apache.axis.Constants.XSD_STRING);

      call.setSOAPActionURI(sSOAPAction);
      ret = (String) call.invoke(sURL, sMethodName,new Object[]{StringParam1,StringParam2});