DOM解析

DOM解析方法：

public class DOM_Person {

	public static List<Person> getPersons(InputStream inStream)
			throws Throwable {
		List<Person> persons = new ArrayList<Person>();
		/* 实例化一个文档构建器工厂 */
		DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
		/* 通过文档构建器工厂获取一个文档构建器 */
		DocumentBuilder builder = factory.newDocumentBuilder();
		/* 通过文档构建器构建一个文档实例 */
		Document documnet = builder.parse(inStream);// 调用parse()完成解析xml文件，形成文档树

		Element root = documnet.getDocumentElement();// 取得根元素

		NodeList personNodes = root.getElementsByTagName("person");

		for (int i = 0; i < personNodes.getLength(); i++) {
			Person person = new Person();
			Element personElement = (Element) personNodes.item(i);
			person.setId(new Integer(personElement.getAttribute("id")));
			NodeList personChilds = personElement.getChildNodes();// 取得Person的子节点
			for (int y = 0; y < personChilds.getLength(); y++) {
				if (personChilds.item(y).getNodeType() == Node.ELEMENT_NODE) {// 判断当前节点是否是元素类型节点
					Element childElement = (Element) personChilds.item(y);
					if ("name".equals(childElement.getNodeName())) {
						person.setName(childElement.getFirstChild()
								.getNodeValue());// 取得第一个子节点的文本值
					} else if ("age".equals(childElement.getNodeName())) {
						person.setAge(new Short(childElement.getFirstChild()
								.getNodeValue()));
					}
				}
			}
			persons.add(person);
		}
		return persons;
	}
}

public class Main extends Activity {
	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		/* 获取XML文件流 */
		InputStream inStream = getClass().getClassLoader().getResourceAsStream(
				"itcast.xml");

		List<Person> persons = null;
		/* DOM解析XML文件 */

		try {
			persons = DOM_Person.getPersons(inStream);
		} catch (Throwable e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		System.out.println("/* DOM解析XML文件 */");
		for (Person person : persons) {
			System.out.println(person.toString());
		}
	}
}