Java创建XML的DOM方式

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package cn.rock.service;

import java.io.FileOutputStream;

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;
import org.w3c.dom.Text;

public class DOMCreateService {

public void DOMCreateXML(){
  DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

   try {
    DocumentBuilder builder = factory.newDocumentBuilder();
    Document doc = builder.newDocument();
    Element root = doc.createElement("persons");
    Element person = doc.createElement("person");
    person.setAttribute("id", "15");

    Element name = doc.createElement("name");
    Text nameText = doc.createTextNode("rock");
    Element age = doc.createElement("age");
    Text ageText = doc.createTextNode("20");

    name.appendChild(nameText);
    age.appendChild(ageText);

    person.appendChild(name);
    person.appendChild(age);

    root.appendChild(person);

    Transformer transFormer = TransformerFactory.newInstance().newTransformer();
//    transFormer.setOutputProperty(OutputKeys.DOCTYPE_SYSTEM, "system");
//    transFormer.setOutputProperty(OutputKeys.DOCTYPE_PUBLIC, "public");

    transFormer.setOutputProperty(OutputKeys.METHOD, "xml");
//    transFormer.setOutputProperty(OutputKeys.INDENT, "yes");
//    transFormer.setOutputProperty(OutputKeys.STANDALONE, "yes");
    transFormer.transform(new DOMSource(doc), new StreamResult(new FileOutputStream("D:\\person.xml")));
   } catch (Exception e) {
    e.printStackTrace();
   }

}
}