有关axis调用webservice无参数传入可是有返回参数的方式

public void getRscMsg(){try {final String endpoint = "http://localhost:8080/CrmHttpServiceWeb/services/RscMsgService";final Service service =new Service(); final Call call = (Call) service.createCall(); call.setTargetEndpointAddress( new java.net.URL(endpoint) ); call.setOperationName("getRscMsg");String result = (String) call.invoke(new Object[]{}); System.out.println("return value is " + result);} catch (Exception e) {e.printStackTrace();}}

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??? 关键是第9行，入参是一个空对象。