/*** 利用免费航班城市webservice获取随机城市对*/public List<String> randomCity(){String endpoint = "http://webservice.webxml.com.cn/webservices/DomesticAirline.asmx?wsdl";String nameSpace = "http://WebXml.com.cn/";String operationName = "getDomesticCity";Service service = new Service();Call call;String FOCElementBody = null;List<String> citys = new ArrayList<String>();try {call = (Call) service.createCall();call.setUseSOAPAction(true);call.setSOAPActionURI(nameSpace + operationName);call.setTargetEndpointAddress(endpoint);call.setReturnType(org.apache.axis.encoding.XMLType.XSD_SCHEMA);call.setOperationName(operationName);Object res = (Object) call.invoke(new Object[] {});Schema schema = (Schema) res;MessageElement[] msgele = schema.get_any();FOCElementBody = msgele[1].getChildren().toString().replace("[", "").replace("]", "");StringReader stringReader = new StringReader(FOCElementBody);InputSource inputSource = new InputSource(stringReader);DocumentBuilderFactory docBuilderFac = DocumentBuilderFactory.newInstance();DocumentBuilder docBuilder = docBuilderFac.newDocumentBuilder();Document document = docBuilder.parse(inputSource);Node node = document.getDocumentElement();NodeList temp = node.getChildNodes();for(int i=0;i<temp.getLength();i++){NodeList tmp = temp.item(i).getChildNodes();citys.add(tmp.item(2).getTextContent());}} catch (ServiceException e) {e.printStackTrace();} catch (RemoteException e) {e.printStackTrace();} catch (ParserConfigurationException e) {e.printStackTrace();} catch (SAXException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}String citytemp1 = citys.get(rand.nextInt(citys.size()));String citytemp2 = null;do{citytemp2 = citys.get(rand.nextInt(citys.size()));}while(citytemp1==citytemp2);citys.clear();citys.add(citytemp1);citys.add(citytemp2);return citys;}