SAX解析XML文件实例代码

import java.io.File;

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;



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 XMLTest extends DefaultHandler {



    public void startDocument() throws SAXException{

        System.out.println("<?xml version='1.0' encoding='UTF-8' ?>");

    }

    public void processingInstruction(String target ,String data) throws SAXException{

        System.out.println("<?"+target+" "+data+"?>");

    }

    public void startElement(String uri,String localName,

            String qName,Attributes attrs)throws SAXException {

        System.out.print("<"+qName);

        int len=attrs.getLength();

        for(int i=0;i<len;i++){

            System.out.print(" ");

            System.out.print(attrs.getQName(i));

            System.out.print("=\"");

            System.out.print(attrs.getValue(i));

            System.out.print("\"");

        }

        System.out.print(">");

        List list=new ArrayList();

    }

    public void characters(char[] ch,int start,

            int length)throws SAXException {

        System.out.println(new String(ch,start,length));

    

    }

    public void endElement(String uri,String localName,

            String qName)throws SAXException {

        System.out.println("</"+qName+">");

    

    }

    public static void main(String[] args) {

        SAXParserFactory sdf=SAXParserFactory.newInstance();

        SAXParser sp=null;

        try {

            sp=sdf.newSAXParser();

            //aa.xml里面必须有数据,可以解析出来里面的内容

            File f=new File("c:/aa.xml");

            sp.parse(f,new XMLTest());

        } catch (ParserConfigurationException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (SAXException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        

    }

}