我正在使用iTextSharp將PDF文檔合併在一起。我的問題是我想合併一個包含書籤的大型PDF。我目前的功能是使用PdfWriter來合併文檔。我知道PdfStamper會工作,但我無法弄清楚如何改變功能正常工作。itextsharp從pdfwriter更改爲pdfstamper以保留PDF中的書籤
當我在下面的示例中將PdfWriter更改爲PdfStamper時,出現錯誤。
代碼示例:
writer = PdfStamper.GetInstance(pdfDoc, New FileStream(outputPath, FileMode.OpenOrCreate))
錯誤消息:
'的GetInstance' 不是 'iTextSharp.text.pdf.PdfStamper'
這裏是一個整體構件功能:
Public Shared Function MergePdfFiles(ByVal pdfFiles() As String, ByVal outputPath As String) As Boolean
Dim result As Boolean = False
Dim pdfCount As Integer = 0
Dim f As Integer = 0
Dim fName As String
Dim reader As iTextSharp.text.pdf.PdfReader = Nothing
Dim pageCount As Integer = 0
Dim pdfDoc As iTextSharp.text.Document = Nothing
Dim writer As PdfWriter = Nothing
Dim cb As PdfContentByte = Nothing
Dim page As PdfImportedPage = Nothing
Dim rotation As Integer = 0
Try
pdfCount = pdfFiles.Length
If pdfCount > 1 Then
fName = pdfFiles(f)
reader = New iTextSharp.text.pdf.PdfReader(fName)
pageCount = reader.NumberOfPages
pdfDoc = New iTextSharp.text.Document(reader.GetPageSizeWithRotation(1), 18, 18, 18, 18)
writer = PdfWriter.GetInstance(pdfDoc, New FileStream(outputPath, FileMode.OpenOrCreate))
With pdfDoc
.Open()
End With
cb = writer.DirectContent
While f < pdfCount
Dim i As Integer = 0
While i < pageCount
i += 1
pdfDoc.SetPageSize(reader.GetPageSizeWithRotation(i))
pdfDoc.NewPage()
page = writer.GetImportedPage(reader, i)
rotation = reader.GetPageRotation(i)
If rotation = 90 Then
cb.AddTemplate(page, 0, -1.0F, 1.0F, 0, 0, reader.GetPageSizeWithRotation(i).Height)
ElseIf rotation = 270 Then
cb.AddTemplate(page, 0, 1.0F, -1.0F, 0, reader.GetPageSizeWithRotation(i).Width + 60, -30)
Else
cb.AddTemplate(page, 1.0F, 0, 0, 1.0F, 0, 0)
End If
End While
f += 1
If f < pdfCount Then
fName = pdfFiles(f)
reader = New iTextSharp.text.pdf.PdfReader(fName)
pageCount = reader.NumberOfPages
End If
End While
pdfDoc.Close()
result = True
End If
Catch ex As Exception
MessageBox.Show(ex.Message)
Return False
End Try
Return result
End Function