I have the following method that shrink the page to 50% :
private void shrinkDocuments(List<PdfDocument> documentsToBeMerged){
for (PdfDocument pdfDoc : documentsToBeMerged) {
for (int p = 1; p <= pdfDoc.getNumberOfPages(); p++) {
PdfPage page = pdfDoc.getPage(p);
Rectangle media = page.getCropBox();
if (media == null) {
media = page.getMediaBox();
}
// Shrink the page to 50%
Rectangle crop = new Rectangle(0, 0, media.getWidth() / 2, media.getHeight() / 2);
page.setMediaBox(crop);
page.setCropBox(crop);
}
pdfDoc.close();
}
}
Debugging I see that the program throws a com.itextpdf.kernel.PdfException: Document was closed. It is impossible to execute action
.
How can I solve this ? How can I open again this documents?