Java 类com.lowagie.text.pdf.PRAcroForm 实例源码

public static void encrypt(PDFDocument doc, OutputStream os, String newUserPassword, String newOwnerPassword, int permissions, int encryption) throws ApplicationException, DocumentException, IOException {
    byte[] user = newUserPassword==null?null:newUserPassword.getBytes();
    byte[] owner = newOwnerPassword==null?null:newOwnerPassword.getBytes();

    PdfReader pr = doc.getPdfReader();
    List bookmarks = SimpleBookmark.getBookmark(pr);
    int n = pr.getNumberOfPages();

    Document document = new Document(pr.getPageSizeWithRotation(1));
    PdfCopy writer = new PdfCopy(document, os);
    if(encryption!=ENCRYPT_NONE)writer.setEncryption(user, owner, permissions, encryption);
    document.open();


    PdfImportedPage page;
    for (int i = 1; i <= n; i++) {
        page = writer.getImportedPage(pr, i);
        writer.addPage(page);
    }
    PRAcroForm form = pr.getAcroForm();
    if (form != null)writer.copyAcroForm(pr);
    if (bookmarks!=null)writer.setOutlines(bookmarks);
    document.close();
}