Android SAX解析XML

Android中有SAX、DOM及PULL等方式解析xml：

SAX是一种占用内存少且解析速度快的解析器，它采用的是事件启动。官方推荐使用

以下是通过网上 获取的天气xml文件

<?xml version="1.0" encoding="UTF-8"?><!-- published at 2011-12-14 14:55:05 --><Profiles><Weather><city>广州</city><status1>多云</status1><status2>阴</status2><figure1>duoyun</figure1><figure2>yin</figure2><direction1>无持续风向</direction1><direction2>无持续风向</direction2><power1>≤3</power1><power2>≤3</power2><temperature1>20</temperature1><temperature2>12</temperature2><ssd>0</ssd><tgd1>21</tgd1><tgd2>21</tgd2><zwx>2</zwx><ktk>5</ktk><pollution>3</pollution><xcz>4</xcz><zho /><diy /><fas /><chy>4</chy><zho_shuoming>暂无</zho_shuoming><diy_shuoming>暂无</diy_shuoming><fas_shuoming>暂无</fas_shuoming><chy_shuoming>套装、夹衣、风衣、夹克衫、西服套装、马甲衬衫配长裤</chy_shuoming><pollution_l>一般</pollution_l><zwx_l>弱</zwx_l><ssd_l>舒适</ssd_l><fas_l>暂无</fas_l><zho_l>暂无</zho_l><chy_l>夹衣类</chy_l><ktk_l>比较适宜(制热)</ktk_l><xcz_l>不太适宜</xcz_l><diy_l>暂无</diy_l><pollution_s>对空气污染物扩散无明显影响</pollution_s><zwx_s>紫外线弱</zwx_s><ssd_s>适宜在自然环境及露天场所活动。</ssd_s><ktk_s>比较适宜开启空调</ktk_s><xcz_s>洗车后未来1-2天内有降水、大风或沙尘天气，或洗车当日气温太低容易结冰。不太适宜洗车。</xcz_s><gm>1</gm><gm_l>低发期</gm_l><gm_s>天气舒适，不易发生感冒；</gm_s><yd>2</yd><yd_l>比较适宜</yd_l><yd_s>虽然天空云层较厚，比较适宜户外运动；</yd_s><savedate_weather>2011-12-14</savedate_weather><savedate_life>2011-12-14</savedate_life><savedate_zhishu>2011-12-14</savedate_zhishu></Weather></Profiles>

解析类：继承DefaultHandler类

package wu.lis.action;import org.xml.sax.Attributes;import org.xml.sax.SAXException;import org.xml.sax.helpers.DefaultHandler;import wu.lis.model.Weather;import wu.lis.util.Constant;public class WeatherHandler extends DefaultHandler {private Weather weather;private String preTag = null;// 作用是记录解析时的上一个节点名称@Overridepublic void startDocument() throws SAXException {weather = new Weather();System.out.println("startDocument");}@Overridepublic void startElement(String uri, String localName, String qName,Attributes attributes) throws SAXException {preTag = qName;System.out.println(preTag);}@Overridepublic void characters(char[] ch, int start, int length)throws SAXException {String result = new String(ch, start, length);if (preTag.equals(Constant.City)) {if (weather.getCity() == null)weather.setCity(result);}if (preTag.equals(Constant.Status1)) {if (weather.getStatus1() == null)weather.setStatus1(result);}if (preTag.equals(Constant.Status2)) {if (weather.getStatus2() == null)weather.setStatus2(result);}if (preTag.equals(Constant.Figure1)) {if (weather.getFigure1() == null)weather.setFigure1(result);}if (preTag.equals(Constant.Figure2)) {if (weather.getFigure2() == null)weather.setFigure2(result);}if (preTag.equals(Constant.Direction1)) {if (weather.getDirection1() == null)weather.setDirection1(result);}if (preTag.equals(Constant.Direction2)) {if (weather.getDirection2() == null)weather.setDirection2(result);}if (preTag.equals(Constant.Power1)) {if (weather.getPower1() == null)weather.setPower1(result);}if (preTag.equals(Constant.Power2)) {if (weather.getPower2() == null)weather.setPower2(result);}if (preTag.equals(Constant.Temperature1)) {System.out.println(preTag);if (weather.getTemperature1() == null)weather.setTemperature1(result);}if (preTag.equals(Constant.Temperature2)) {if (weather.getTemperature2() == null)weather.setTemperature2(result);}if (preTag.equals(Constant.Ssd)) {if (weather.getSsd() == null)weather.setSsd(result);}if (preTag.equals(Constant.Ssd_l)) {if (weather.getSsd_l() == null)weather.setSsd_l(result);}if (preTag.equals(Constant.Ssd_s)) {if (weather.getSsd_s() == null)weather.setSsd_s(result);}if (preTag.equals(Constant.Tgd1)) {if (weather.getTgd1() == null)weather.setTgd1(result);}if (preTag.equals(Constant.Tgd2)) {if (weather.getTgd2() == null)weather.setTgd2(result);}if (preTag.equals(Constant.Zwx)) {if (weather.getZwx() == null)weather.setZwx(result);}if (preTag.equals(Constant.Zwx_l)) {if (weather.getZwx_l() == null)weather.setZwx_l(result);}if (preTag.equals(Constant.Zwx_s)) {if (weather.getZwx_s() == null)weather.setZwx_s(result);}if (preTag.equals(Constant.Ktk)) {if (weather.getKtk() == null)weather.setKtk(result);}if (preTag.equals(Constant.Ktk_l)) {if (weather.getKtk_l() == null)weather.setKtk_l(result);}if (preTag.equals(Constant.Ktk_s)) {if (weather.getKtk_s() == null)weather.setKtk_s(result);}if (preTag.equals(Constant.Pollution))if (weather.getPollution() == null)weather.setPollution(result);if (preTag.equals(Constant.Pollution_l))if (weather.getPollution_l() == null)weather.setPollution_l(result);if (preTag.equals(Constant.Pollution_s))if (weather.getPollution_s() == null)weather.setPollution_s(result);if (preTag.equals(Constant.Xcz))if (weather.getXcz() == null)weather.setXcz(result);if (preTag.equals(Constant.Xcz_l))if (weather.getXcz_l() == null)weather.setXcz_l(result);if (preTag.equals(Constant.Xcz_s))if (weather.getXcz_s() == null)weather.setXcz_s(result);if (preTag.equals(Constant.Chy))if (weather.getChy() == null)weather.setChy(result);if (preTag.equals(Constant.Chy_l))if (weather.getChy_l() == null)weather.setChy_l(result);if (preTag.equals(Constant.Chy_shuoming))if (weather.getChy_shuoming() == null)weather.setChy_shuoming(result);if (preTag.equals(Constant.Gm))if (weather.getGm() == null)weather.setGm(result);if (preTag.equals(Constant.Gm_l))if (weather.getGm_l() == null)weather.setGm_l(result);if (preTag.equals(Constant.Gm_s))if (weather.getGm_s() == null)weather.setGm_s(result);if (preTag.equals(Constant.Yd))if (weather.getYd() == null)weather.setYd(result);if (preTag.equals(Constant.Yd_l))if (weather.getYd_l() == null)weather.setYd_l(result);if (preTag.equals(Constant.Yd_s))if (weather.getYd_s() == null)weather.setYd_s(result);if (preTag.equals(Constant.Savedate_weather))if (weather.getSavedate_weather() == null)weather.setSavedate_weather(result);if (preTag.equals(Constant.Savedate_life))if (weather.getSavedate_life() == null)weather.setSavedate_life(result);if (preTag.equals(Constant.Savedate_zhishu))if (weather.getSavedate_zhishu() == null)weather.setSavedate_zhishu(result);}@Overridepublic void endElement(String uri, String localName, String qName)throws SAXException {if (qName.equals("Profiles")) {preTag = null;}}@Overridepublic void endDocument() throws SAXException {super.endDocument();System.out.println("城市：" + weather.getCity());System.out.println("白天：" + weather.getStatus1());System.out.println("夜间：" + weather.getStatus2());System.out.println("白天风向:"+weather.getDirection1());System.out.println("夜间风向:"+weather.getDirection2());System.out.println("白天温度：" + weather.getTemperature1());System.out.println("夜间温度：" + weather.getTemperature2());}}

调用解析

InputStream inStream = getClass().getClassLoader().getResourceAsStream("weather.xml");System.out.println(result);SAXParserFactory factory = SAXParserFactory.newInstance();try {SAXParser parser = factory.newSAXParser();XMLReader reader = parser.getXMLReader();reader.setContentHandler(new WeatherHandler());reader.parse(new InputSource(inStream));} catch (Exception e) {e.printStackTrace();}