DOM生成XML文档

 import java.io.File;

 import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
 import javax.xml.transform.OutputKeys;
 import javax.xml.transform.Transformer;
 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 DOM_Create_XML {

     public static void main(String[] args) throws Exception {
         DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
         DocumentBuilder builder = factory.newDocumentBuilder();
         Document doc = builder.newDocument();
         Element addresslist = doc.createElement("addresslist");
         Element linkman = doc.createElement("linkman");
         Element name = doc.createElement("name");
         Element email = doc.createElement("email");
         name.appendChild(doc.createTextNode("李兴华"));
         email.appendChild(doc.createTextNode("lxh@163.com"));
         linkman.appendChild(name);
         linkman.appendChild(email);
         addresslist.appendChild(linkman);
         doc.appendChild(addresslist);
         TransformerFactory tf = TransformerFactory.newInstance();
         Transformer transformer = tf.newTransformer();
         transformer.setOutputProperty(OutputKeys.ENCODING, "GBK");
         DOMSource domSource = new DOMSource(doc);
         StreamResult result = new StreamResult(new File("D:")+File.separator+"output.xml");
         transformer.transform(domSource, result);
     }
 }

运行程序，D盘下生成一个output.xml文档：

<?xml version="1.0" encoding="GBK" standalone="no"?><addresslist><linkman><name>李兴华</name><email>lxh@163.com</email></linkman></addresslist>

整理一下格式：

 <?xml version="1.0" encoding="GBK" standalone="no"?>
 <addresslist>
     <linkman>
         <name>李兴华</name>
         <email>lxh@163.com</email>
     </linkman>
 </addresslist>