call.setSoapAction("http://soap.amazon.com");
call.setTo(new EndpointReference(url));
call.setTransportInfo(Constants.TRANSPORT_HTTP,
Constants.TRANSPORT_HTTP,
false);
call.invokeNonBlocking(operation, element, specificCallbackObject);
} catch (AxisFault axisFault) {
axisFault.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}