here's code that works - for some reason, I can't take the rectangle as
it is, I have to flip the coordinates. I wonder if this is documented.
The coordinates in the PDF are PDF coordinates (bottom is y = 0), but
the coordinates I had to use are top is y = 0)
Tilman
package org.apache.pdfbox.examples.util;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.text.PDFTextStripperByArea;
import java.awt.geom.Rectangle2D;
import java.io.File;
import java.io.IOException;
/**
* This is an example on how to extract text from a specific area on
the PDF document.
*
* @author Ben Litchfield
*/
public final class ExtractTextByArea
{
private ExtractTextByArea()
{
//utility class and should not be constructed.
}
/**
* This will print the documents text in a certain area.
*
* @param args The command line arguments.
*
* @throws IOException If there is an error parsing the document.
*/
public static void main( String[] args ) throws IOException
{
if( args.length != 1 )
{
usage();
}
else
{
PDDocument document = null;
try
{
document = PDDocument.load( new File(args[0]) );
PDFTextStripperByArea stripper = new
PDFTextStripperByArea();
stripper.setSortByPosition( true );
float pageHeight =
document.getPage(0).getCropBox().getHeight();
Rectangle2D rect = new Rectangle2D.Float( 69.75f,
pageHeight - 376.62f, 153.45f - 69.75f, 376.62f - 351.17f);
/////////////////////////////////////////////////
stripper.addRegion( "class1", rect );
PDPage firstPage = document.getPage(0);
stripper.extractRegions( firstPage );
System.out.println( "Text in the area:" + rect );
System.out.println( stripper.getTextForRegion( "class1"
) );
}
finally
{
if( document != null )
{
document.close();
}
}
}
}
/**
* This will print the usage for this document.
*/
private static void usage()
{
System.err.println( "Usage: java " +
ExtractTextByArea.class.getName() + " <input-pdf>" );
}
}
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