Thank you for your reply.
I am sure that the layer is only created through the procedure which I
shown before. Will he be OCG I do not know (I do not know what OCG ist).
Until now i have not worked with iText , and after i solve this problem
unlikely to do it in the next time.
Here's how I check for wotermark layer (and it seem to work):
private boolean hasWatermark(File pdfFile) throws Exception {
File tempStemper = null;
try {
PdfReader reader = new PdfReader(pdfFile.getPath());
tempStemper = File.createTempFile(".pdf",
"hasWatermarkTemp");
PdfStamper stamper = new PdfStamper(reader, new
FileOutputStream(
tempStemper));
Map<String, PdfLayer> layers =
stamper.getPdfLayers();
boolean wm = false;
if (!layers.isEmpty()) {
Set<String> keys = layers.keySet();
for (String key : keys) {
if
(key.toString().equalsIgnoreCase("watermark"))
wm = true;
}
}
stamper.close();
return wm;
} catch (Exception e) {
throw e;
} finally {
if ((tempStemper != null) && (tempStemper.exists()))
tempStemper.delete();
}
}
I start to read "iText in Action". Could you tell exactly where in the Book
can i find example to a technique from your replay or give me a small code
fragment.
P.S.: Sorry for my English.
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