次のようにPDFを表示して<iframe>います：
<iframe src="/itextPdfServlet" height="600px" width="700px"></iframe>
この印刷オプションを無効にしたいと思います。どうすればこれを達成できますか？
私のサーブレット
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
String fullPath = (String) request.getSession().getAttribute("fullPath");
response.setContentType("application/pdf");
ServletOutputStream out = null;
try{
File file = new File( fullPath );
FileInputStream fileIn = new FileInputStream( file );
out = response.getOutputStream();
Document document = new Document(PageSize.A4);
PdfWriter writer = PdfWriter.getInstance(document, out);
document.open();
PdfContentByte cb = writer.getDirectContent();
PdfReader reader = new PdfReader(fileIn);
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream("fullPath"));
stamper.setEncryption("reader_password".getBytes(), "permission_password".getBytes(),
~(PdfWriter.ALLOW_COPY | PdfWriter.ALLOW_PRINTING ), PdfWriter.STANDARD_ENCRYPTION_128);
stamper.close();
PdfImportedPage page = writer.getImportedPage(reader, 1);
document.newPage();
cb.addTemplate(page, 0, 0);
document.add(new Paragraph("my timestamp"));
response.setHeader("Expires", "0");
response.setHeader("Cache-Control", "must-revalidate, post-check=0, pre-check=0");
response.setHeader("Pragma", "public");
document.close();
}catch(Exception e){
}
}