DOM 创建节点（转）

package com.inspur.java.xml;import java.io.File;import java.io.PrintWriter;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory;import javax.xml.parsers.ParserConfigurationException;import javax.xml.transform.OutputKeys;import javax.xml.transform.Transformer;import javax.xml.transform.TransformerConfigurationException;import javax.xml.transform.TransformerFactory;import javax.xml.transform.dom.DOMSource;import javax.xml.transform.stream.StreamResult;import org.w3c.dom.Document;import org.w3c.dom.Element;public class DOMXml {    /**     * @param args     * @throws Exception      * @throws ParserConfigurationException      */    public static void main(String[] args) throws ParserConfigurationException, Exception {        // TODO Auto-generated method stub       createXML("employees.xml");    }    static Document document = null;        static void createXML(String filename) throws ParserConfigurationException, Exception{        DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();        DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();        document = documentBuilder.newDocument();        Element root = document.createElement("employees");        document.appendChild(root);        Element employee = document.createElement("employee");        Element name = document.createElement("name");        //textNode只有document能创建        name.appendChild(document.createTextNode("中文名"));        employee.appendChild(name);        Element sex = document.createElement("sex");        sex.appendChild(document.createTextNode("male"));        employee.appendChild(sex);                Element age =document.createElement("age");        age.appendChild(document.createTextNode("13"));        employee.appendChild(age);        root.appendChild(employee);        TransformerFactory tf = TransformerFactory.newInstance();        Transformer transformer = tf.newTransformer();        //        DOMSource source = new DOMSource(document);        transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");        transformer.setOutputProperty(OutputKeys.INDENT,"yes");        PrintWriter pw = new PrintWriter(new File(filename));        StreamResult streamResult = new StreamResult(pw);        transformer.transform(source,streamResult);            }}