extractordriver.java

《Java与模式》一书的源代码

package com.javapatterns.observer.xmlparser;

import java.io.OutputStreamWriter;
import java.io.Writer;
import org.xml.sax.ContentHandler;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.XMLReaderFactory;

public class ExtractorDriver
{

    public static void main(String[] args)
    {

        if (args.length <= 0)
        {
            System.out.println("Usage: java ExtractorDriver url");
            return;
        }

        try
        {
            XMLReader parser = XMLReaderFactory.createXMLReader();

            // Since this just writes onto the console, it's best
            // to use the system default encoding, which is what
            // we get by not specifying an explicit encoding here.
            Writer out = new OutputStreamWriter(System.out);
            ContentHandler handler = new TextExtractor(out);
            parser.setContentHandler(handler);

            //      parser.parse("file:////c://myxml.xml");
            parser.parse(args[0]);

            out.flush();
        }
        catch (Exception e)
        {
            System.err.println(e);
        }

    }
}