Android–解析xml

一、Sax解析：

package com.xml.demo;import java.io.InputStream;import java.util.ArrayList;import java.util.List;import javax.xml.parsers.SAXParser;import javax.xml.parsers.SAXParserFactory;import org.xml.sax.Attributes;import org.xml.sax.SAXException;import org.xml.sax.helpers.DefaultHandler;public class SAXParserXML {public List<Person> getPersons(InputStream inStream) throws Throwable {SAXParserFactory factory = SAXParserFactory.newInstance();SAXParser saxParser = factory.newSAXParser();MyHandler myHandler = new MyHandler();saxParser.parse(inStream, myHandler);List<Person> persons = myHandler.getPersons();inStream.close();return persons;}private final class MyHandler extends DefaultHandler {private List<Person> persons;private Person person;private String tagElement;public List<Person> getPersons() {return persons;}@Overridepublic void startDocument() throws SAXException {persons = new ArrayList<Person>();}@Overridepublic void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {if ("person".equals(localName)) {person = new Person();person.setId(new Integer(attributes.getValue(0)));}tagElement = localName;}@Overridepublic void characters(char[] ch, int start, int length) throws SAXException {if (tagElement != null) {String tmp = new String(ch, start, length);if ("name".equals(tagElement)) {person.setName(tmp);} else if ("age".equals(tagElement)) {person.setAge(Integer.valueOf(tmp));}}}@Overridepublic void endElement(String uri, String localName, String qName) throws SAXException {if ("person".equals(localName)) {persons.add(person);person = null;}tagElement = null;}}}

<?xml version="1.0" encoding="UTF-8"?><persons><person id="001"><name>張一</name><age>11</age></person><person id="002"><name>張二</name><age>12</age></person><person id="003"><name>張三</name><age>13</age></person><person id="004"><name>張四</name><age>14</age></person><person id="005"><name>張五</name><age>15</age></person></persons>

package com.xml.demo;import java.io.InputStream;import java.util.List;import android.test.AndroidTestCase;import android.util.Log;public class XMLTest extends AndroidTestCase {/** * 測試sax解析業務類 * @throws Throwable */public void testSax() throws Throwable {SAXParserXML mSaxParserXML = new SAXParserXML();InputStream inStream = this.getClass().getClassLoader().getResourceAsStream("persons.xml");List<Person> persons = mSaxParserXML.getPersons(inStream);for(Person person : persons){Log.d(AppConstant.TAG, person.toString());}}}

二、Pull解析

package com.xml.demo;import java.io.InputStream;import java.util.ArrayList;import java.util.List;import org.xmlpull.v1.XmlPullParser;import android.util.Xml;public class PULLParserXML {private static final String ENCODING = "UTF-8";public List<Person> getPersons(InputStream inStream) throws Throwable {List<Person> persons = null;Person person = null;XmlPullParser pullParser = Xml.newPullParser();pullParser.setInput(inStream, ENCODING);// 產生第一個事件int eventType = pullParser.getEventType();while (eventType != XmlPullParser.END_DOCUMENT) {switch (eventType) {case XmlPullParser.START_DOCUMENT:persons = new ArrayList<Person>();break;case XmlPullParser.START_TAG:String tagName = pullParser.getName();if ("person".equals(tagName)) {person = new Person();person.setId(Integer.valueOf(pullParser.getAttributeValue(0)));}if (person != null) {if("name".equals(tagName)) {// 擷取解析器當前指向元素的下一個文本節點的值person.setName(pullParser.nextText());}if ("age".equals(tagName)){person.setAge(Integer.valueOf(pullParser.nextText()));}}break;case XmlPullParser.END_TAG:if ("person".equals(pullParser.getName())) {persons.add(person);person = null;}break;}// 繼續產生事件eventType = pullParser.next();}return persons;}}

/** * 測試Pull解析業務類 * @throws Throwable */public void testPull() throws Throwable {PULLParserXML pull = new PULLParserXML();InputStream inStream = this.getClass().getClassLoader().getResourceAsStream("persons.xml");List<Person> persons = pull.getPersons(inStream);for(Person person : persons){Log.d(AppConstant.TAG, person.toString());}}

三、DOM解析

Android中不推薦使用DOM來解析xml，在此就不貼代碼了。