iTextSharp合并并保留插件 [英] iTextSharp merge and preserve plugins
问题描述
我有一个PDF,该PDF在一页上有一个插件控件.我需要将其与另一个pdf合并,但是当我这样做时,插件会重新呈现为空白矩形.有没有一种合并和保留插件控件的方法?如果重要的话,该插件是通过 http://www.3ds.com/products/3dvia/3dvia-composer/resource-center/
I have a PDF that has a plugin control on one page. I need to merge it with another pdf but when I do, the plugin is redendered as a blank rectangle. Is there a way to merge and preserve the plugin control? If important, the plugin is a Dessault Systemes 3D Via Composer Player control as installed from http://www.3ds.com/products/3dvia/3dvia-composer/resource-center/
我使用的代码是简单编写器getinstance,contentbyte directcontent,getimportedpage和addtemplate.没什么.
The code I'm using is simple writer getinstance, contentbyte directcontent, getimportedpage, addtemplate. Nothing fancy.
FileStream docStream = new FileStream(@"C:\Temp\Merged.pdf", FileMode.Create);
Document newDocument = new Document(PageSize.A4.Rotate());
PdfWriter pdfWriter = PdfWriter.GetInstance(newDocument, docStream);
try
{
newDocument.Open();
PdfContentByte pdfContentByte = pdfWriter.DirectContent;
newDocument.NewPage();
PdfReader mainPage = new PdfReader(@"C:\Temp\PageWithPlugin.pdf");
PdfImportedPage importedPage1 = pdfWriter.GetImportedPage(mainPage, 1);
pdfContentByte.AddTemplate(importedPage1, 0, 0);
mainPage.Close();
PdfReader smgPages = new PdfReader(@"C:\Temp\MorePages.pdf");
for (int page = 1; page <= smgPage.NumberOfPages; page++)
{
newDocument.NewPage();
PdfImportedPage importedPage = pdfWriter.GetImportedPage(smgPages, page);
pdfContentByte.AddTemplate(importedPage, 0, 0);
}
smgPages.Close();
}
finally
{
docStream.Flush();
if (newDocument != null)
newDocument.Close();
docStream.Close();
}
推荐答案
尝试一下.
List<byte[]> fileList = new List<byte[]>();
using (FileStream fileSteam = File.OpenRead((@"C:\Temp\PageWithPlugin.pdf")))
{
Byte[] byteArray = new byte[fileSteam.Length];
fileSteam.Read(byteArray, 0, byteArray.Length);
fileList.Add(byteArray);
}
using (FileStream fileSteam = File.OpenRead((@"C:\Temp\MorePages.pdf")))
{
Byte[] byteArray = new byte[fileSteam.Length];
fileSteam.Read(byteArray, 0, byteArray.Length);
fileList.Add(byteArray);
}
using(MemoryStream msOutput = new MemoryStream())
{
PdfReader pdfFile = new PdfReader(fileList[0]);
Document doc = new Document();
PdfWriter pCopy = new PdfSmartCopy(doc, msOutput);
doc.Open();
for (int k = 0; k < fileList.Count; k++)
{
for (int i = 1; i < pdfFile.NumberOfPages + 1; i++)
{
pdfFile = new PdfReader(fileList[k]);
((PdfSmartCopy)pCopy).AddPage(pCopy.GetImportedPage(pdfFile, i));
pCopy.FreeReader(pdfFile);
}
}
pdfFile.Close();
pCopy.Close();
doc.Close();
fileList.Clear();
byte[] form = msOutput.ToArray();
using (FileStream fileSteam = new FileStream(@"C:\Temp\Merged.pdf", FileMode.Create))
{
fileStream.Write(form, 0, form.Length);
}
}
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