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package org.pdfbox.examples.fdf;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import org.pdfbox.cos.COSArray;
import org.pdfbox.cos.COSDictionary;
import org.pdfbox.cos.COSDocument;
import org.pdfbox.cos.COSName;
import org.pdfbox.cos.COSString;
import org.pdfbox.pdfparser.PDFParser;
import org.pdfbox.pdmodel.PDDocument;
import org.pdfbox.pdmodel.PDDocumentCatalog;
import org.pdfbox.pdmodel.annotation.interactive.PDAcroForm;
import org.pdfbox.pdmodel.annotation.interactive.PDField;
import org.pdfbox.pdfwriter.COSWriter;
import org.pdfbox.examples.AbstractExample;
/**
* This example will take a PDF document and fill the fields with data from the
* FDF fields. This will not set the appearance stream in the document. If you
* open a document with fields that have been set by this application then you
* need to click on the field to get it to show on the screen.
*
* I would be interested in anybody that is willing to submit some code that shows
* how to create the appearance stream.
*
* @author Ben Litchfield (ben@csh.rit.edu)
* @version $Revision: 1.7 $
*/
public class ImportFDF extends AbstractExample
{
/**
* Creates a new instance of ImportFDF
*/
public ImportFDF()
{
}
/**
* This will takes the values from the fdf document and import them into the
* PDF document.
*
* @param pdfDocument The document to put the fdf data into.
* @param fdfDocument The FDF document to get the data from.
*
* @throws IOException If there is an error setting the data in the field.
*/
public void importFDF( PDDocument pdfDocument, COSDocument fdfDocument ) throws IOException
{
PDDocumentCatalog docCatalog = pdfDocument.getDocumentCatalog();
PDAcroForm acroForm = docCatalog.getAcroForm();
acroForm.setCacheFields( true );
COSDictionary trailer = fdfDocument.getTrailer();
COSDictionary root = (COSDictionary)trailer.getDictionaryObject( COSName.ROOT );
COSDictionary fdf = (COSDictionary)root.getDictionaryObject( COSName.getPDFName( "FDF" ) );
if( fdf != null )
{
COSArray fields = (COSArray)fdf.getDictionaryObject( COSName.getPDFName( "Fields" ) );
for( int i=0; i<fields.size(); i++ )
{
COSDictionary fdfField = (COSDictionary)fields.getObject( i );
COSString fieldName = (COSString)fdfField.getDictionaryObject( COSName.getPDFName( "T" ) );
System.out.println( "Processing " + fieldName );
PDField docField = acroForm.getField( fieldName.getString() );
if( docField != null )
{
docField.importFDF( fdfField );
}
}
}
}
/**
* This will import an fdf document and write out another pdf.
* <br />
* see usage() for commandline
*
* @param args command line arguments
*
* @throws Exception If there is an error importing the FDF document.
*/
public static void main(String[] args) throws Exception
{
PDDocument pdf = null;
COSDocument fdf = null;
FileInputStream pdfStream = null;
FileInputStream fdfStream = null;
FileOutputStream output = null;
PDFParser pdfParser = null;
PDFParser fdfParser = null;
COSWriter writer = null;
try
{
if( args.length != 3 )
{
usage();
}
else
{
ImportFDF importer = new ImportFDF();
pdfStream = new FileInputStream( args[0] );
fdfStream = new FileInputStream( args[1] );
output = new FileOutputStream( args[2] );
pdfParser = new PDFParser( pdfStream );
fdfParser = new PDFParser( fdfStream );
pdfParser.parse();
fdfParser.parse();
pdf = pdfParser.getPDDocument();
fdf = fdfParser.getDocument();
importer.importFDF( pdf, fdf );
writer = new COSWriter( output );
writer.write( pdf );
}
}
finally
{
close( fdf );
close( pdf );
close( pdfStream );
close( fdfStream );
close( output );
close( writer );
}
}
/**
* This will print out a message telling how to use this example.
*/
private static void usage()
{
System.err.println( "usage: org.pdfbox.examples.fdf.ImportFDF <pdf-file> <fdf-file> <output-file>" );
}
}