DOM生成XML文件
将生成的XML文件保存到硬盘上，需要使用的类有TransformerFactory,Transformer,DOMSource,StreamResult。
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;/** * 将生成的xml文件输出到文件中 * @author ad * */public class DOMOutDemo {public static void main(String[] args) {//①建立DocumentBuilderFactory，用于取得DocumentBuilderDocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();//②通过DocumentBuilderFactory来取得DocumentBuilderDocumentBuilder builder = null;try {builder = factory.newDocumentBuilder();} catch (ParserConfigurationException e) {e.printStackTrace();}//③定义Document接口对象，通过DocumentBuilder类进行DOM树的转换操作Document doc = null;doc = builder.newDocument();//创建一个新的文档//④建立各个操作节点Element addresslist = doc.createElement("addresslist");//建立节点Element linkman = doc.createElement("linkman");Element name = doc.createElement("name");Element email = doc.createElement("email");//⑤设置节点的文本内容，即为每一个节点添加文本节点name.appendChild(doc.createTextNode("用户"));//设置文本email.appendChild(doc.createTextNode("user@163.com"));//⑥设置节点关系linkman.appendChild(name);linkman.appendChild(email);addresslist.appendChild(linkman);//子节点doc.appendChild(addresslist);//文档上保持节点//⑦输出文档到文件中TransformerFactory tf = TransformerFactory.newInstance();Transformer t = null;try {t = tf.newTransformer();} catch (TransformerConfigurationException e) {e.printStackTrace();}t.setOutputProperty(OutputKeys.ENCODING, "GB2312");//设置编码DOMSource source = new DOMSource(doc);//输出文档StreamResult result = new StreamResult(new File("D:"+File.separator+"testXML\\output.xml"));//指定输出位置try {t.transform(source, result);} catch (TransformerException e) {e.printStackTrace();}}}t.setOutputProperty(OutputKeys.ENCODING, "GB2312");//设置编码