Android学习笔记(六)

org.wp.service

DOMPersonService

Java代码

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package org.wp.service;   import java.io.InputStream; import java.util.ArrayList; import java.util.List; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.Node; import org.w3c.dom.NodeList; import org.wp.domain.Person;   public class DOMPersonService {   public static List<Person> readXml(InputStream inStream) throws Exception { List<Person> persons = new ArrayList<Person>();   // 得到DOM解析器的工厂实例 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); // 从DOM工厂获得DOM解析器 DocumentBuilder builder = factory.newDocumentBuilder(); // 解析XML文档的输入流，得到一个Document Document document = builder.parse(inStream); // 得到XML文档的根节点 Element root = document.getDocumentElement(); // 得到person的节点列表 NodeList nodes = root.getElementsByTagName("person");   for (int i = 0; i < nodes.getLength(); i++) { Element personElement = (Element) nodes.item(i); Person person = new Person(); person.setId(new Integer(personElement.getAttribute("id"))); // 得到节点的子节点 // Element / Text == Node NodeList childNodes = personElement.getChildNodes();   for (int y = 0; y < childNodes.getLength(); y++) { Node childNode = (Node) childNodes.item(y); if (childNode.getNodeType() == Node.ELEMENT_NODE) { Element childElement = (Element) childNode; if ("name".equals(childElement.getNodeName())) { person.setName(childElement.getFirstChild() .getNodeValue()); } else if ("age".equals(childElement.getNodeName())) { person.setAge(new Short(childElement.getFirstChild() .getNodeValue())); } } } persons.add(person); } return persons; } }

org.wp.

DOMPersonServiceTest

Java代码

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package org.wp.xml;   import java.io.InputStream; import java.util.List; import org.wp.domain.Person; import org.wp.service.DOMPersonService; import android.test.AndroidTestCase; import android.util.Log;   public class DOMPersonServiceTest extends AndroidTestCase {   private static final String TAG = "DOMPersonServiceTest";   public void testReadXml() throws Exception { InputStream inStream = DOMPersonServiceTest.class.getClassLoader() .getResourceAsStream("wp.xml"); List<Person> persons = DOMPersonService.readXml(inStream); for (Person person : persons) { Log.i(TAG, person.toString()); } } }