Java24第21章—XML.pptVIP

第21章 Java与XML ;回顾; ;一、XML简介;一、XML简介;一、XML简介;一、XML简介;二、XML基础;二、XML基础;二、XML基础;二、XML基础;XSL 简介;;二、XML基础;二、XML基础;二、XML基础;二、XML基础;二、XML基础;二、XML基础;三、使用JAXP进行SAX编程;三、使用JAXP进行SAX编程;import javax.xml.parsers.*; import org.xml.sax.*; import org.xml.sax.helpers.*; import java.io.*; public class ReadCoalTotalsXML extends DefaultHandler { public static void main(String[] arguments) { ReadCoalTotalsXML read = new ReadCoalTotalsXML(); } ReadCoalTotalsXML() { String coalFile = f:/CoalTotals.xml; File input = new File(coalFile); SAXParserFactory factory = SAXParserFactory.newInstance(); factory.setValidating(true); try { SAXParser sax = factory.newSAXParser(); sax.parse(input, new CoalTotalsXMLHandler() ); } catch (ParserConfigurationException pce) { System.out.println(Could not create that parser.); System.out.println(pce.getMessage()); } catch (SAXException se) { System.out.println(Problem with the SAX parser.); System.out.println(se.getMessage()); } catch (IOException ioe) { System.out.println(Error reading file.); System.out.println(ioe.getMessage()); } } };class CoalTotalsXMLHandler extends DefaultHandler { static int READING_FIPS = 1; static int READING_COUNTRY = 2; static int READING_YEAR = 3; static int READING_ANTHRACITE_PRODUCTION = 4; static int READING_NOTHING = 0; int currentActivity = READING_NOTHING; CoalTotalsRecord coalRecord = new CoalTotalsRecord(); CoalTotalsXMLHandler() { super(); } public void startElement(String uri, String localName, String qName, Attributes attributes) { if (qName.equals(fips)) currentActivity = READING_FIPS; else if (qName.equals(country)) currentActivity = READING_COUNTRY; else if (qName.equals(year)) currentActivity = READING_YEAR;