演示使用DOM技术如何动态生成新的XML文档

import java.io.File;

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;

/**

* 演示使用DOM技术如何动态生成新的XML文档

*

* @version 1.0

*

*

*/

public class DOMCreateNewXML {

public static void main(String[] args) {

try {

// 通过DocumentBuilderFactory抽象类的工厂方法newInstance()创建DOM解析器的工厂实例

DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

// 通过DocumentBuilderFactory实例的静态方法newDocument()得到DOM解析器

DocumentBuilder builder = factory.newDocumentBuilder();

Document doc = builder.newDocument();

// 根据需要创建节点

Element userEle = doc.createElement("person");

userEle.setAttribute("type", "person");

Element nameEle = doc.createElement("name");

Element ageEle=doc.createElement("age");

Text text=doc.createTextNode("22");

Text text1 = doc.createTextNode("xieyongxue");

doc.appendChild(userEle);

//doc.appendChild(ageEle);

userEle.appendChild(ageEle);

userEle.appendChild(nameEle);

nameEle.appendChild(text1);

ageEle.appendChild(text);

// 建立TransformerFactory工厂实例

TransformerFactory transFactory = TransformerFactory.newInstance();

// 设定格式

transFactory.setAttribute("indent-number", new Integer(4));

// 使用工厂实例创建Transformer对象

Transformer transformer = transFactory.newTransformer();

transformer.setOutputProperty(OutputKeys.INDENT, "yes");

// 将变换后的Document封装到DOMSource对象中

DOMSource domSource = new DOMSource(doc);

File file = new File("D://newXML02.xml");

FileOutputStream out = new FileOutputStream(file);

StreamResult xmlResult = new StreamResult(out);

// 使用Transformer实例的transform方法进行转换，将文档的内容映射到新的XML文档中，完成工作

transformer.transform(domSource, xmlResult);

} catch (Exception ex) {

ex.printStackTrace();

}

}

}