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 currencies = new LinkedList();

}

@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:

2008-11-07

Exchange rates for 2008-11-07

EUR

1.220

USD

1.275

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