Java核心代码例程之：(JAXP) DOM

import Javax.XML.parsers.*;
import org.w3c.dom.*;
import org.xml.sax.*;

/**
* DOMDemo uses JAXP to acquire a DocumentBuilder to build a DOM Document from an XML file.
* The example XML file represents a shopping cart.
*
* The following JARs must be in your CLASSPATH:
* - jaxp.jar
* - xerces.jar (for SAX parser and DOM object implementations)
*
* Download JAXP (which includes these JARs) here: http://java.sun.com/xml/
* Find additional Xerces info here: http://xml.apache.org/
*
**/

public class DOMDemo
{

  public static void main( String[] args )
  {
    try
    {
      DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
      System.out.println( "DocumentBuilderFactory classname: " + factory.getClass().getName() );

      DocumentBuilder builder = factory.newDocumentBuilder();
      System.out.println( "DocumentBuilder classname: " + builder.getClass().getName() );

      //parse the XML file and create the Document
      Document document = builder.parse( "cart.xml" );

      /*
      At this point, all data in the XML file has been parsed and loaded into memory
      in the form of a DOM Document object. The Document is a tree of Node objects.
      This printNode() method simply recurses through a Node tree and displays info
      about each node.**/
      printNode( document, "" );