java读取XML

SAX版

	package com.mobi.bean;    

	import org.xml.sax.helpers.DefaultHandler;    
	import javax.xml.parsers.*;    
	import org.xml.sax.*;    
	import org.xml.sax.helpers.*;    
	import java.util.*;    
	import java.io.*;    

	public class SAXReader extends DefaultHandler    
	{    
	    java.util.Stack tags = new java.util.Stack();    

	    // --------------XML Content-------------    
	    String text = null;    

	    String url = null;    

	    String author = null;    

	    String description = null;    

	    String day = null;    

	    String year = null;    

	    String month = null;    

	    // ----------------------------------------------    

	    public void endDocument() throws SAXException    
	    {    
	        System.out.println("------Parse End--------");    
	    }    

	    public void startDocument() throws SAXException    
	    {    
	        System.out.println("------Parse Begin--------");    

	    }    

	    public void startElement(String p0, String p1, String p2, Attributes p3)    
	            throws SAXException    
	    {    
	        tags.push(p1);    
	    }    

	    public void endElement(String p0, String p1, String p2) throws SAXException    
	    {    
	        tags.pop();    
	        if (p1.equals("link")) printout();    
	    }    

	    public void characters(char[] p0, int p1, int p2) throws SAXException    
	    {    
	        String tag = (String) tags.peek();    
	        if (tag.equals("text"))    
	            text = new String(p0, p1, p2);    
	        else   
	            if (tag.equals("url"))    
	                url = new String(p0, p1, p2);    
	            else   
	                if (tag.equals("author"))    
	                    author = new String(p0, p1, p2);    
	                else   
	                    if (tag.equals("day"))    
	                        day = new String(p0, p1, p2);    
	                    else   
	                        if (tag.equals("month"))    
	                            month = new String(p0, p1, p2);    
	                        else   
	                            if (tag.equals("year"))    
	                                year = new String(p0, p1, p2);    
	                            else   
	                                if (tag.equals("description"))    
	                                    year = new String(p0, p1, p2);    
	    }    

	    private void printout()    
	    {    
	        System.out.print("Content: ");    
	        System.out.println(text);    
	        System.out.print("URL: ");    
	        System.out.println(url);    
	        System.out.print("Author: ");    
	        System.out.println(author);    
	        System.out.print("Date: ");    
	        System.out.println(day + "-" + month + "-" + year);    
	        System.out.print("Description: ");    
	        System.out.println(description);    
	        System.out.println();    
	    }    

	    static public void main(String[] args)    
	    {    
	        String filename = null;    
	        boolean validation = false;    
	        filename = "links.xml";    
	        SAXParserFactory spf = SAXParserFactory.newInstance();    
	        SAXParser saxParser = null;    

	        try   
	        {    
	            saxParser = spf.newSAXParser();    
	        }    
	        catch (Exception ex)    
	        {    
	            System.err.println(ex);    
	            System.exit(1);    
	        }    
	        try   
	        {    
	            saxParser.parse(new File(filename), new SAXReader());    
	        }    
	        catch (SAXException se)    
	        {    
	            System.err.println(se.getMessage());    
	            System.exit(1);    
	        }    
	        catch (IOException ioe)    
	        {    
	            System.err.println(ioe);    
	            System.exit(1);    
	        }    
	    }    

	}   

Factory版

	package com.mobi.bean;   

	import javax.xml.parsers.*;   
	import org.w3c.dom.*;   

	public class xmldisplay   
	{   
	    public static void main(String args[])   
	    {   
	        try  
	        {   
	            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();   
	            DocumentBuilder builder = factory.newDocumentBuilder();   
	            Document doc = builder.parse("links.xml");   
	            doc.normalize();   
	            NodeList links = doc.getElementsByTagName("link");   
	            for (int i = 0; i < links.getLength(); i++)   
	            {   
	                Element link = (Element) links.item(i);   
	                System.out.print("Content: ");   
	                System.out.println(link.getElementsByTagName("text").item(0).getFirstChild().getNodeValue());   
	                System.out.print("URL: ");   
	                System.out.println(link.getElementsByTagName("url").item(0).getFirstChild().getNodeValue());   
	                System.out.print("Author: ");   
	                System.out.println(link.getElementsByTagName("author").item(0).getFirstChild().getNodeValue());   
	                System.out.print("Date: ");   
	                Element linkdate = (Element) link.getElementsByTagName("date").item(0);   
	                String day = linkdate.getElementsByTagName("day").item(0).getFirstChild().getNodeValue();   
	                String month = linkdate.getElementsByTagName("month").item(0).getFirstChild().getNodeValue();   
	                String year = linkdate.getElementsByTagName("year").item(0).getFirstChild().getNodeValue();   
	                System.out.println(day + "-" + month + "-" + year);   
	                System.out.print("Description: ");   
	                System.out.println(link.getElementsByTagName("description").item(0).getFirstChild().getNodeValue());   
	                System.out.println();   
	            }   
	        }   
	        catch (Exception e)   
	        {   
	            e.printStackTrace();   
	        }   

	    }   
	}