saxhandler.java

这个是学习网络编程的好好文档！ 里面有一些老师发给的学习jsp的课件！

import org.xml.sax.*;
import org.xml.sax.helpers.*;
import java.io.*;

public class SAXHandler extends DefaultHandler
{
    int level;
    public void startDocument() throws SAXException
    {
        System.out.println("StartDocument() called!");
        level = 0;
    }
    public void endDocument() throws SAXException
    {
        System.out.println("endDocument() called!");
    }
    public void startElement(String namespaceURI, String localName, 
                String qName, Attributes attr) throws SAXException
    {
        level++;
        System.out.println(levelSpace()+"Start Element:"+qName);
        for(int i=0; i<attr.getLength(); i++ )
        {
            String attrName = attr.getQName(i);
            String attrValue = attr.getValue(i);
            System.out.println(levelSpace()+"--"+attrName+":"+attrValue);
        }
    }
    public void endElement(String namespaceURI, String localName, 
                String qName) throws SAXException
    {
        System.out.println(levelSpace()+"End   Element:"+qName);
        level--;
    }
    public void characters(char[] ch, int start, int length) throws SAXException
    {
        String str = new String(ch,start,length);
        System.out.println(levelSpace()+"Value:"+str);
    }
    private String levelSpace()
    {
        String s = "";
        for(int i=0;i<2*level;i++) s += " ";
        return s;        
    }
}