Question

基本上，我具有许多Custom > Properties的原始XFA文件，可以将其转换为PDF-A，但是转换后所有属性都丢失了。

这是我的ConvertToPDFa代码：

 public byte[] ConvertToPDFa3(byte[] OriginPDF,byte[] FileStore,string XML)
    {
        //***************************************
        // Convert PDF to PDFa3 and Attach XML .
        //***************************************
        //Create Reader for Reading PDF in  byte[]

        using (var reader = new PdfReader(OriginPDF))
        {
            // Open Stream for Converting
            using (var Convertstream = new MemoryStream())
            {
                // New Doc for PDF/A-3
                Document pdfAdocument = new Document();

                //Init instance for pdfAdocument
                PdfAWriter writer = PdfAWriter.GetInstance(pdfAdocument, Convertstream, PdfAConformanceLevel.PDF_A_3U);
                writer.CreateXmpMetadata();

                if (!pdfAdocument.IsOpen())
                    pdfAdocument.Open();

                PdfContentByte cb = writer.DirectContent; // Holds the PDF data 
                //Count original PDF pages and uses for pdfa-3
                PdfImportedPage page;
                int pageCount = reader.NumberOfPages;
                for (int i = 0; i < pageCount; i++)
                {
                    pdfAdocument.NewPage();
                    page = writer.GetImportedPage(reader, i + 1);
                    cb.AddTemplate(page, 0, 0);
                }
                //Create Output Intents 
                ICC_Profile icc = ICC_Profile.GetInstance(AppDomain.CurrentDomain.BaseDirectory + "res\\sRGB Color Space Profile.icm");
                writer.SetOutputIntents("sRGB IEC61966-2.1", "", "http://www.color.org", "sRGB IEC61966-2.1", icc);

                //Embedded File to PDFa3 
                writer.AddFileAttachment("XML for : " + certRefNumber, FileStore, XML, lblRefNo.Text + ".xml");
                //Close all file to finish 
                pdfAdocument.Close();
                reader.Close();

                //Test writes output in Phys path
                //File.WriteAllBytes(@"OutPDFa.pdf", Convertstream.ToArray());
                byte[] filledPDfa = Convertstream.ToArray();
                return filledPDfa;
            }     
        }
        // End Convert and Attached
    }

我尝试使用以下代码获取原始属性：

static Dictionary<string, string> GetPdfProperties(byte[] originfile)
    {
        Dictionary<string, string> propertyInfo = null;

        using (PdfReader reader = new PdfReader(originfile))
        {
            propertyInfo = reader.Info;
            reader.Close();
        }

        return propertyInfo;
    }

然后将原始属性复制到PDF-A：

static byte[] CopyProps(byte[] fileinput,byte[] fileOrigin,PdfAWriter wr)
    {
            using (var rd = new PdfReader(fileinput))
            {
                using (var outp = new MemoryStream())
                {
                    using (var stamper = new PdfAStamper(rd, outp,PdfAConformanceLevel.PDF_A_3U))
                    {
                        var info = rd.Info;
                        Dictionary<string, string> propertyInfo = GetPdfProperties(fileOrigin);
                    foreach (KeyValuePair<string, string> property in propertyInfo)
                    {
                        info[property.Key] = property.Value;
                    }
                    stamper.MoreInfo = info;

                    using (var ms = new MemoryStream())
                        {
                            wr.CreateXmpWriter(ms,info); //****error was here
                            stamper.XmpMetadata = ms.ToArray();
                        }
                    }
                return outp.ToArray();
                } 
            }  
    }

，但由于受保护级别而发现错误是无法解决的我应该将错误行放置到另一个行吗？

或

对于这些问题还有其他解决方案吗？请帮助：（

我使用iTextSharp 5.5.13

iTextSharp如何将自定义属性添加到PDF-A？

0 个答案: