- import java.io.File;
- import java.util.LinkedList;
- 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 ParseXMLFileWithSAX extends DefaultHandler {
- private StringBuffer buffer = new StringBuffer();
- private static String responseCode;
- private static String date;
- private static String title;
- private static Currency currency;
- private static Rates rates;
- public static void main(String[] args) throws Exception {
- DefaultHandler handler = new ParseXMLFileWithSAX();
- SAXParserFactory factory = SAXParserFactory.newInstance();
- factory.setValidating(false);
- SAXParser parser = factory.newSAXParser();
- parser.parse(new File("in.xml"), handler);
- System.out.println("Response Code:" + responseCode);
- System.out.println("Date:" + date);
- System.out.println("Title:" + title);
- System.out.println("Rates:");
- for (Currency curr : rates.currencies) {
- System.out.println("\tCode:" + curr.code + " - Rate:" + curr.rate);
- }
- }
- private static class Currency {
- public String code;
- public String rate;
- }
- private static class Rates {
- public List<Currency> currencies = new LinkedList<Currency>();
- }
- @Override
- public void startElement(String uri, String localName, String qName,
- Attributes attributes) throws SAXException {
- buffer.setLength(0);
- if (qName.equals("response")) {
- responseCode = attributes.getValue("code");
- }
- else if (qName.equals("date")) {
- date = "";
- }
- else if (qName.equals("title")) {
- title = "";
- }
- else if (qName.equals("rates")) {
- rates = new Rates();
- }
- else if (qName.equals("currency")) {
- currency = new Currency();
- }
- }
- @Override
- public void endElement(String uri, String localName, String qName)throws SAXException {
- if (qName.equals("date")) {
- date = buffer.toString();
- }
- else if (qName.equals("title")) {
- title = buffer.toString();
- }
- else if (qName.equals("currency")) {
- rates.currencies.add(currency);
- }
- else if (qName.equals("code")) {
- currency.code = buffer.toString();
- }
- else if (qName.equals("rate")) {
- currency.rate = buffer.toString();
- }
- }
- public void characters(char[] ch, int start, int length) {
- buffer.append(ch, start, length);
- }
- }
输入xml文件:
- <?xml version="1.0" encoding="UTF-8" ?>
- <response code="200">
- <date>2008-11-07</date>
- <title>Exchange rates for 2008-11-07</title>
- <rates>
- <currency>
- <code>EUR</code>
- <rate>1.220</rate>
- </currency>
- <currency>
- <code>USD</code>
- <rate>1.275</rate>
- </currency>
- </rates>
- </response>
输出:
- Response Code:200
- Date:2008-11-07
- Title:Exchange rates for 2008-11-07
- Rates:
- Code:EUR - Rate:1.0
- Code:USD - Rate:1.275600
来源: http://www.phpxs.com/code/1002543/