[XML] SAX解析XML

测试源码

package com.david.test;

import java.io.File;
import java.io.IOException;

import javax.xml.parsers.ParserConfigurationException;
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 SaxDecode{


    public SaxDecode(String fileName){
        try {
            SAXParserFactory saxParserFactory = SAXParserFactory.newInstance();
            SAXParser saxParser = saxParserFactory.newSAXParser();
            saxParser.parse(new File(fileName), new MySAXHandler());
        } catch (ParserConfigurationException e) {
            e.printStackTrace();
        } catch (SAXException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

class MySAXHandler extends DefaultHandler{

    @Override
    public void startDocument() throws SAXException {
        System.out.println("start document");
    }

    @Override
    public void endDocument() throws SAXException {
        System.out.println("end document");
    }

    @Override
    public void startElement(String uri, String localName, String qName,
            Attributes attributes) throws SAXException {
//      System.out.println(uri+" "+localName+" "+qName+" "+attributes);
        System.out.println(qName);
        for(int i=0;i<attributes.getLength();i++){
            System.out.println(attributes.getQName(i)+" "+attributes.getValue(i));
        }
    }

    @Override
    public void endElement(String uri, String localName, String qName)
            throws SAXException {
//      System.out.println(uri+" "+localName+" "+qName);
        System.out.println(qName);
    }

    @Override
    public void characters(char[] ch, int start, int length)
            throws SAXException {
        String value = new String(ch,start,length);
        if(!value.trim().equals(""))
            System.out.println(value);
    }

}