DOM方法写入XML文件

import java.io.File;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.TransformerException;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 DomTest {public static void main(String[] args) {DomTest domtest = new DomTest();domtest.createXML();}public DocumentBuilder getDocumentBuilder() {// 创建一个DocumentBuilderFactory的对象DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();// 创建DocumentBuilder对象DocumentBuilder db = null;try {db = dbf.newDocumentBuilder();} catch (ParserConfigurationException e) {e.printStackTrace();}return db;}/** * 生成xml */public void createXML() {DocumentBuilder db = getDocumentBuilder();Document document = db.newDocument();document.setXmlStandalone(true);Element bookstore = document.createElement("bookStore");// 向bookstore根节点中添加子节点bookElement book = document.createElement("book");Element name = document.createElement("name");// name.setNodeValue("小王子");name.setTextContent("小王子");book.appendChild(name);book.setAttribute("id", "1");// 将book节点添加到bookstore根节点中bookstore.appendChild(book);// 将bookstore节点（已经包含了book）添加到dom树中document.appendChild(bookstore);// 创建TransformerFactory对象TransformerFactory tff = TransformerFactory.newInstance();try {// 创建Transformer对象Transformer tf = tff.newTransformer();tf.setOutputProperty(OutputKeys.INDENT, "yes");tf.transform(new DOMSource(document), new StreamResult(new File("f:\\a.xml")));} catch (TransformerConfigurationException e) {e.printStackTrace();} catch (TransformerException e) {e.printStackTrace();}}}