org.apache.poi.hpsf.examples.WriteTitle Maven / Gradle / Ivy
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package org.apache.poi.hpsf.examples;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import org.apache.poi.hpsf.Property;
import org.apache.poi.hpsf.PropertySet;
import org.apache.poi.hpsf.Section;
import org.apache.poi.hpsf.SummaryInformation;
import org.apache.poi.hpsf.Variant;
import org.apache.poi.hpsf.WritingNotSupportedException;
import org.apache.poi.hpsf.wellknown.PropertyIDMap;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
/**
* This class is a simple sample application showing how to create a property
* set and write it to disk.
*/
public class WriteTitle
{
/**
* Runs the example program.
*
* @param args Command-line arguments. The first and only command-line
* argument is the name of the POI file system to create.
* @throws IOException if any I/O exception occurs.
* @throws WritingNotSupportedException if HPSF does not (yet) support
* writing a certain property type.
*/
public static void main(final String[] args)
throws WritingNotSupportedException, IOException
{
/* Check whether we have exactly one command-line argument. */
if (args.length != 1)
{
System.err.println("Usage: " + WriteTitle.class.getName() +
"destinationPOIFS");
System.exit(1);
}
final String fileName = args[0];
/* Create a mutable property set. Initially it contains a single section
* with no properties. */
final PropertySet mps = new PropertySet();
/* Retrieve the section the property set already contains. */
final Section ms = mps.getSections().get(0);
/* Turn the property set into a summary information property. This is
* done by setting the format ID of its first section to
* SectionIDMap.SUMMARY_INFORMATION_ID. */
ms.setFormatID(SummaryInformation.FORMAT_ID);
/* Create an empty property. */
final Property p = new Property();
/* Fill the property with appropriate settings so that it specifies the
* document's title. */
p.setID(PropertyIDMap.PID_TITLE);
p.setType(Variant.VT_LPWSTR);
p.setValue("Sample title");
/* Place the property into the section. */
ms.setProperty(p);
/* Create the POI file system the property set is to be written to. */
try (final POIFSFileSystem poiFs = new POIFSFileSystem()) {
/* For writing the property set into a POI file system it has to be
* handed over to the POIFS.createDocument() method as an input stream
* which produces the bytes making out the property set stream. */
final InputStream is = mps.toInputStream();
/* Create the summary information property set in the POI file
* system. It is given the default name most (if not all) summary
* information property sets have. */
poiFs.createDocument(is, SummaryInformation.DEFAULT_STREAM_NAME);
/* Write the whole POI file system to a disk file. */
try (FileOutputStream fos = new FileOutputStream(fileName)) {
poiFs.writeFilesystem(fos);
}
}
}
}