我正在尝试使用以下代码使用iTextSharp 5.1.3将多个PDFA文档连接到一个文件中:
Try
Dim f As Integer = 0
Dim outFile As String = destinationFile
Dim document As iTextSharp.text.Document = Nothing
Dim writer As PdfSmartCopy = Nothing
While f < sourceFiles.Length
' Create a reader for a certain document
Dim reader As New PdfReader(sourceFiles(f))
' Retrieve the total number of pages
Dim n As Integer = reader.NumberOfPages
If f = 0 Then
document = New iTextSharp.text.Document(reader.GetPageSizeWithRotation(1))
writer = New PdfSmartCopy(document, New FileStream(outFile, FileMode.Create))
document.Open()
End If
Dim page As PdfImportedPage
Dim i As Integer = 0
While i < n
i += 1
page = writer.GetImportedPage(reader, i)
writer.AddPage(page)
End While
Dim form As PRAcroForm = reader.AcroForm
If form IsNot Nothing Then
writer.CopyAcroForm(reader)
End If
f += 1
End While
document.Close()
Catch generatedExceptionName As Exception
End Try
如果我在Acrobat Reader X中打开任何输入文件,我会收到一条消息,说明它们确实是PDFA,但如果我打开上面代码创建的输出文件则不会。因此,我新创建的连接PDF文档似乎不符合PDFA。
我已经尝试将writer.PDFXConformance属性设置为PdfWriter.PDFA1A,但这没有帮助。
有谁知道是否有可能实现我想要做的事情?
答案 0 :(得分:1)
使用PDFXConformance
时,您还需要在CreateXmpMetadata
对象上调用writer
。我通常在关闭文档之前就这样做了,我并不是100%肯定它需要去那里但是其他人都会把它放在那里。
End While
writer.CreateXmpMetadata()
document.Close()
然后,当你实例化你的编写器时,就像你一样设置一致性属性:
writer = New PdfSmartCopy(document, New FileStream(outFile, FileMode.Create))
writer.PDFXConformance = PdfWriter.PDFA1A