SAX解析XML文件

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1.XML文件介绍

XML中的节点和startElement，endElement之间的对应关系

2.SAX解析XML文件

public class SAXForHandler extends DefaultHandler {private String TAG = "SAXForHandler";private List<Person> list;@Override //在开始XML解析的时候调用public void startDocument() throws SAXException {list = new ArrayList<Person>();}private String pertag;private Person person;@Override //在开始解析某个结点的时候调用public void startElement(String uri, String localName, String qName,Attributes attributes) throws SAXException {if("person".equals(localName)){for(int i = 0; i < attributes.getLength(); ++i){person = new Person();person.setId(Integer.parseInt(attributes.getValue(i)));}}pertag = localName;}@Override //在获取结点中内容的时候调用public void characters(char[] ch, int start, int length)throws SAXException {String data = new String(ch, start, length).trim();if("name".equals(pertag)){person.setName(data);}else if ("age".equals(pertag)) {person.setAge(new Short(data));Log.i(TAG, person.toString());//打印输出person的信息}}@Override //在完成解析某个结点的时候调用public void endElement(String uri, String localName, String qName) throws SAXException {if("person".equals(localName)){list.add(person);person = null;}pertag = null;}@Override //在完成整个XML解析的时候调用public void endDocument() throws SAXException {}}

调用如下代码就可以让SAX解析XML文件

public void parseXMLWithSAX() throws Exception {InputStream inputStream = getClass().getClassLoader().getResourceAsStream("NewFile.xml");SAXForHandler saxForHandler = new SAXForHandler();SAXParserFactory factory = SAXParserFactory.newInstance();SAXParser saxParser = factory.newSAXParser();saxParser.parse(inputStream, saxForHandler);inputStream.close();}

解析结果如下;

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