Added errorhandling for replacePlaceholder

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@776 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c

1 files changed, 18 insertions, 3 deletions

diff --git a/src/main/java/at/knowcenter/wag/egov/egiz/pdf/BinarySignature.java b/src/main/java/at/knowcenter/wag/egov/egiz/pdf/BinarySignature.java
index bc399f0..ae1ce12 100644
--- a/src/main/java/at/knowcenter/wag/egov/egiz/pdf/BinarySignature.java
+++ b/src/main/java/at/knowcenter/wag/egov/egiz/pdf/BinarySignature.java
@@ -966,15 +966,30 @@ public abstract class BinarySignature
     }

   }

   

-  private static void replacePlaceholder(PdfStamper stamper, int pageNr, String placeholderName) throws BadElementException, MalformedURLException, IOException, BadPdfFormatException {

+  private static void replacePlaceholder(PdfStamper stamper, int pageNr, String placeholderName) throws BadElementException, MalformedURLException, IOException, BadPdfFormatException, PresentableException {

      Image img = Image.getInstance(SignaturePlaceholderData.class.getResource("empty.jpg"));

      PdfImage pImg = new PdfImage(img, "Imwurscht", null);

      PdfStamperImp stamperImp = (PdfStamperImp)stamper.getWriter();

      PdfIndirectObject ind = stamperImp.addToBody(pImg);

      

      PdfDictionary resources = stamper.getReader().getPageN(pageNr).getAsDict(PdfName.RESOURCES);

-     resources.getAsDict(PdfName.XOBJECT).put(new PdfName(placeholderName), ind.getIndirectReference());

-     stamperImp.markUsed(resources);

+     if (ind != null && resources != null)

+     {

+        PdfDictionary xobjDict = resources.getAsDict(PdfName.XOBJECT);

+        if (xobjDict != null)

+        {

+           xobjDict.put(new PdfName(placeholderName), ind.getIndirectReference());

+           stamperImp.markUsed(resources);

+        }

+        else

+        {

+           throw new PresentableException(ErrorCode.CANNOT_WRITE_PDF, new NullPointerException("Image dictionary not found in document structure!"));

+        }

+     }

+     else

+     {

+        throw new PresentableException(ErrorCode.CANNOT_WRITE_PDF, new NullPointerException("Resource dictionary not found in document structure!"));

+     }

   }