public static void printXmlFile(String filePath) {
		try {

			Document doc = getDoc(filePath);
			System.out.println(doc.getDocumentElement().getNodeName());
			NodeList nl = doc.getDocumentElement().getChildNodes();
			for (int i = 0; i < nl.getLength(); i++)
				System.out.println(" -> " + nl.item(i).getNodeName());

		} catch (ParserConfigurationException | SAXException | IOException e) {
			System.out.println("print fail");
			e.printStackTrace();
		}
	}