iTextSharp -合并一批PDF字节数组

using System;
using System.IO;
using iTextSharp.text;
using iTextSharp.text.pdf;

public class PDFMerger
{
    public static void MergePDFByteArrays(byte[][] pdfByteArrays, string outputFilePath)
    {
        using (FileStream fs = new FileStream(outputFilePath, FileMode.Create))
        {
            Document document = new Document();
            PdfCopy copy = new PdfCopy(document, fs);
            document.Open();

            foreach (byte[] pdfByteArray in pdfByteArrays)
            {
                PdfReader reader = new PdfReader(pdfByteArray);
                int pageCount = reader.NumberOfPages;

                for (int pageIndex = 1; pageIndex <= pageCount; pageIndex++)
                {
                    PdfImportedPage importedPage = copy.GetImportedPage(reader, pageIndex);
                    copy.AddPage(importedPage);
                }

                reader.Close();
            }

            document.Close();
        }
    }
}