使用iTextSharp从PDF中提取PDF417条形码并获取其数据

using System;
using iTextSharp.text.pdf;
using iTextSharp.text.pdf.parser;
using iTextSharp.text.pdf.qrcode;

public class PDF417Extractor
{
    public static void Main(string[] args)
    {
        string pdfPath = "path/to/your/pdf/file.pdf";
        PdfReader reader = new PdfReader(pdfPath);

        for (int page = 1; page <= reader.NumberOfPages; page++)
        {
            PdfDictionary pageDict = reader.GetPageN(page);
            PdfArray contentArray = pageDict.GetAsArray(PdfName.CONTENTS);

            if (contentArray != null)
            {
                foreach (PdfObject contentObj in contentArray)
                {
                    if (contentObj is PRStream)
                    {
                        PRStream stream = (PRStream)contentObj;
                        byte[] contentBytes = PdfReader.GetStreamBytes(stream);
                        BarcodeQRCode barcode = new BarcodeQRCode(contentBytes, contentBytes.Length, null);
                        string barcodeData = barcode.GetBarcodeText();

                        Console.WriteLine("Barcode Data: " + barcodeData);
                    }
                }
            }
        }

        reader.Close();
    }
}