readtitle.java

Office格式转换代码

/*
 *  ====================================================================
 *  The Apache Software License, Version 1.1
 *
 *  Copyright (c) 2000 The Apache Software Foundation.  All rights
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 *  notice, this list of conditions and the following disclaimer.
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package org.apache.poi.hpsf.examples;

import java.io.*;
import org.apache.poi.hpsf.*;
import org.apache.poi.poifs.eventfilesystem.*;

/**
 * <p>Sample application showing how to read a OLE 2 document's
 * title. Call it with the document's file name as command line
 * parameter.</p>
 *
 * <p>Explanations can be found in the HPSF HOW-TO.</p>
 *
 * @author Rainer Klute ([e-mail])
 * @version $Id: ReadTitle.java,v 1.2 2003/02/20 17:51:37 klute Exp $
 * @since 2003-02-01
 */
public class ReadTitle
{

    public static void main(String[] args) throws IOException
    {
        final String filename = args[0];
        POIFSReader r = new POIFSReader();
        r.registerListener(new MyPOIFSReaderListener(),
                           "\005SummaryInformation");
        r.read(new FileInputStream(filename));
    }


    static class MyPOIFSReaderListener implements POIFSReaderListener
    {
        public void processPOIFSReaderEvent(POIFSReaderEvent event)
        {
            SummaryInformation si = null;
            try
            {
                si = (SummaryInformation)
                    PropertySetFactory.create(event.getStream());
            }
            catch (Exception ex)
            {
                throw new RuntimeException
                    ("Property set stream \"" +
                     event.getPath() + event.getName() + "\": " + ex);
            }
            final String title = si.getTitle();
            if (title != null)
                System.out.println("Title: \"" + title + "\"");
            else
                System.out.println("Document has no title.");
        }
    }

}