java 调用webService接口怎么搞？

Question

// 看不懂这段代码Service service = new Service(); Call call = (Call) service.createCall(); call.setTargetEndpointAddress(new java.net.URL("http://")); call.setUseSOAPAction(true); call.setReturnType(new QName("http://", "string")); // 第二种设置返回值类型为String的方法 call.setOperationName(new QName("http://", "loginSSO")); call.setSOAPActionURI("http://"); call.addParameter(new QName("http://", "userId"), XMLType.XSD_STRING, ParameterMode.IN); call.addParameter(new QName("http://", "token"), XMLType.XSD_STRING, ParameterMode.IN); String retVal = (String) call.invoke(new Object[] { id, "818B1DA07B0" }); return retVal;