Re: [iText-questions] help

Tue, 05 Oct 2010 11:10:39 -0700 

The code you quoted to us won't throw that exception.
 
You're doing something like:
PdfDictionary myDict = (PdfDictionary) 
someVar.callSomeFunctionThatReturnsAPdfObject();
 
Not all PdfObject's are PdfDictionaries.  Of particular interest to you, some 
of them are indirect references to PdfObjects of one sort or another.
 
What you want is more like:
PdfObject myObj = someVar.callSome...();
myObj = PdfReader.getObject( myObj );
if (myObj instanceof PdfDictionary) {
  PdfDictionary myDict = (PdfDictionary)myObj;
}
 
If you tell us which function you're calling to get the PdfObject, we might be 
able to help you further.
 
 
PS: Including a huge block of commented out imports?  Not very helpful.  In 
fact in sample code like this, we don't need to see any of it.  We DO need to 
see your exception stack trace, including the lines of your code that actually 
threw the exception.
 
--Mark Storer
  Senior Software Engineer
  Cardiff.com
 
import legalese.Disclaimer;
Disclaimer<Cardiff> DisCard = null;
 
 


________________________________

        From: Humayan Kabir [mailto:[email protected]] 
        Sent: Monday, October 04, 2010 4:20 PM
        To: [email protected]
        Subject: [iText-questions] help
        
        

        Why this code gives me this error message-à an Exception in thread 
"main" java.lang.ClassCastException: com.itextpdf.text.pdf.PRIndirectReference 
cannot be cast to com.itextpdf.text.pdf.PdfDictionary.

         

         

        //----------------------------------------------my codes

         

         

         

         

        /*

        import java.io.File;

        import java.io.FileOutputStream;

        import java.io.IOException;

        import java.io.PrintWriter;

         import com.itextpdf.text.DocumentException;

        import com.itextpdf.text.pdf.parser.PdfContentReaderTool;

        import java.awt.Color;

         import com.itextpdf.text.BaseColor;

        import com.itextpdf.text.Document;

        import com.itextpdf.text.DocumentException;

        import com.itextpdf.text.PageSize;

        import com.itextpdf.text.Paragraph;

        import com.itextpdf.text.Section;

        import com.itextpdf.text.Anchor;

        import com.itextpdf.text.pdf.PdfReader;

        import com.itextpdf.text.pdf.PdfWriter;

        import com.itextpdf.text.pdf.PdfStamper;

        import com.itextpdf.text.pdf.PdfImage;

        import com.itextpdf.text.pdf.PdfContentByte;

        import com.itextpdf.text.pdf.BaseFont;

        import com.itextpdf.text.pdf.PdfName;

        import com.itextpdf.text.pdf.PdfNumber;

        import java.io.PrintWriter;

        */

         

        import com.itextpdf.text.pdf.PdfStamper;

        import java.io.FileOutputStream;

        import java.io.IOException;

        import com.itextpdf.text.*;

        import java.util.Iterator;

        import com.itextpdf.text.pdf.PdfLayer;

        import java.util.Map;

        import com.itextpdf.text.pdf.PdfReader;

        import com.itextpdf.text.pdf.PdfWriter;

        import com.itextpdf.text.Document;

        import com.itextpdf.text.pdf.PdfDictionary;

         

         

        import java.lang.String;

         

        import java.io.File;

        import java.io.FileOutputStream;

        import java.io.IOException;

        import java.io.PrintWriter;

         

        import com.itextpdf.text.DocumentException;

        import com.itextpdf.text.pdf.PdfArray;

        import com.itextpdf.text.pdf.PdfContentByte;

        import com.itextpdf.text.pdf.PdfCopy;

        import com.itextpdf.text.pdf.PdfLayer;

        import com.itextpdf.text.pdf.parser.PdfContentReaderTool;

        import java.io.FileNotFoundException;

        import java.util.Set;

        import java.util.HashMap;

        import java.util.HashSet;

         

        import com.itextpdf.text.pdf.PdfWriter;

        import java.util.Dictionary;

        import java.util.Iterator;

        import com.itextpdf.text.pdf.PdfDictionary;

        import com.itextpdf.text.pdf.PdfIndirectReference;

        import com.itextpdf.text.pdf.PdfName;

        import com.itextpdf.text.pdf.PdfSignatureAppearance;

        import java.util.Collection;

        import java.util.Hashtable;

         

         

         

         

         

         

         

        public class info {

         

            public static void main(String[] args) throws 
FileNotFoundException, DocumentException,

        IOException {

                

         

         

                PdfReader reader = new PdfReader("personalize.pdf");     // 
personalize.pdf is a pdf file with 4 layers

         

         

                

              

                if (isWatermarked(reader))

                    System.out.println("is marked");

                else

                    System.out.println("is not marked");

                 reader.close();

            }

         

            public static boolean isWatermarked(PdfReader reader) throws 
DocumentException, IOException{

         

         

         PdfStamper stamper = new PdfStamper (reader, new 
FileOutputStream("myTest2.pdf"));

         

         

        Map<String, PdfLayer> layers =(Map) stamper.getPdfLayers();

                boolean wm=false;

                if (!layers.isEmpty()) {

                    Set<String> keys = layers.keySet();

                    for (String key : keys) {

                        if(key.toString().equalsIgnoreCase("layout"))

                            wm=true;

                        System.out.println("Layer name: " + key);

                        //PdfLayer layer = layers.get(key);

                        // do stuff with layer...

                    }

                }

               

                

         

           

         

                stamper.close();

                return wm;

         

         

            }

         

           

         

         

         

         

              

         

            

         

         

        }// end of class

         

         

         

         

         

         

         

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10/04/10 11:35:00
        

        


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