Itext 7 - PdfReader 未使用所有者密码打开错误

I am using This example https://developers.itextpdf.com/content/itext-7-jump-start-tutorial/examples/chapter-5 for the latest Itext7 to fill in a document and I am getting this error: iText.Kernel.Crypto.BadPasswordException: PdfReader is not opened with owner password So I looked around the net I found that some people found solution to this error using PdfReader.unethicalreading = true; but when I try to use this same code it says there is no definition in PDFReader named unethicalreading

这是我的代码：

 string src = @"C:\test1.pdf";
    string dest = @"C:\Test2.pdf";
    PdfDocument pdfDoc = new PdfDocument(new PdfReader(src), new PdfWriter(dest));
    PdfAcroForm form = PdfAcroForm.GetAcroForm(pdfDoc, true);
    IDictionary<String, PdfFormField> fields = form.GetFormFields();
    PdfFormField toSet;
    fields.TryGetValue("Name", out toSet);
    toSet.SetValue("Some text");

您需要像这样更改您的代码：

string src = @"C:\test1.pdf";
string dest = @"C:\Test2.pdf";
PdfReader reader = new PdfReader(src);
reader.setUnethicalReading(true);
PdfDocument pdfDoc = new PdfDocument(reader, new PdfWriter(dest));
PdfAcroForm form = PdfAcroForm.GetAcroForm(pdfDoc, true);
IDictionary<String, PdfFormField> fields = form.GetFormFields();
PdfFormField toSet;
fields.TryGetValue("Name", out toSet);
toSet.SetValue("Some text");

这将允许您违背文档原始作者定义的权限。这也证明设置此类权限已经过时，因为自从 PDF 成为 ISO 标准以来，不再有删除这些权限的惩罚。