Java核心代码例程之：(JAXP) SAX

2019-11-18 15:14:59

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import javax.xml.parsers.*;
import org.xml.sax.*;

/**
* SAXDemo uses JAXP to acquire a SAX parser to parse 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 implementation)
*
* Download JAXP (which includes these JARs) here: http://java.sun.com/xml/
* Find additional Xerces info here: http://xml.apache.org/
*
* Note: Unlike DOM, SAX parsing does not load the XML file into memory.
* SAX parsers traverse the XML file and report parse "events" to an event handler.
**/

public class SAXDemo
  extends org.xml.sax.HandlerBase
{

  /**
   * main creates and runs a SaxTest instance.
   **/
  public static void main( String[] args )
  {
    SAXDemo me = new SAXDemo();
    me.run();
  }

  public void run()
  {
    try
    {
      SAXParserFactory factory = SAXParserFactory.newInstance();
      log( "SAXParserFactory classname: " + factory.getClass().getName() );

      SAXParser saxParser = factory.newSAXParser();
      log( "SAXParser classname: " + saxParser.getClass().getName() );

      /*
      The SAXParser.parse method initiates parsing of the XML file.
      The second parameter specifies which class will handle parse events.
      This class must extend org.xml.sax.HandlerBase

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