我正在尝试将页码添加到使用FileStream构建的合并pdf,这些pdf是从上传到我的服务器的各个pdf构建的。我从MSSQL服务器读取了pdf文件名列表,然后合并页面。
我知道我最有可能使用pdfstamper,但大多数示例都与我的特定代码无关。
try
{
rdr = cmd2.ExecuteReader();
DataTable dt = new DataTable();
dt.Load(rdr);
List<PdfReader> readerList = new List<PdfReader>();
foreach (DataRow row in dt.Rows)
{
PdfReader pdfReader = new PdfReader("http://site.azurewebsites.net/uploads/reports/" +
Convert.ToString(row[0]));
readerList.Add(pdfReader);
}
con2.Close();
System.Net.Mime.ContentType contentType = new System.Net.Mime.ContentType();
contentType.MediaType = System.Net.Mime.MediaTypeNames.Application.Pdf;
Document document = new Document(PageSize.A4, 0, 0, 0, 0);
//Get instance response output stream to write output file.
PdfWriter writer = PdfWriter.GetInstance(document, Response.OutputStream);
document.Open();
foreach (PdfReader reader in readerList)
{
for (int i = 1; i <= reader.NumberOfPages; i++)
{
PdfImportedPage page = writer.GetImportedPage(reader, i);
document.Add(iTextSharp.text.Image.GetInstance(page));
}
}
document.Close();
Response.AppendHeader("content-disposition", "inline; filename=" + Request.QueryString["id"] + "-Final");
Response.ContentType = "application/pdf";
}
}
catch
{
Response.Redirect("~/login.aspx", false);
}
}
private void MergePDFs(string outPutFilePath, params string[] filesPath)
{
List<PdfReader> readerList = new List<PdfReader>();
foreach (string filePath in filesPath)
{
PdfReader pdfReader = new PdfReader(filePath);
readerList.Add(pdfReader);
}
//Define a new output document and its size, type
Document document = new Document(PageSize.A4, 0, 0, 0, 0);
//Create blank output pdf file and get the stream to write on it.
PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(outPutFilePath, FileMode.Create));
document.Open();
foreach (PdfReader reader in readerList)
{
for (int i = 1; i <= reader.NumberOfPages; i++)
{
PdfImportedPage page = writer.GetImportedPage(reader, i);
document.Add(iTextSharp.text.Image.GetInstance(page));
}
}
document.Close();
}
提前致谢!
答案 0 :(得分:3)
因为看起来您已经获得了将文件合并在一起的代码。如果你想在pdf中添加文本,你可以使用PdfStamper
以下代码是我用来向pdf添加文本的代码(你需要在x和y点将它带到你需要的位置)
using (var newPDF = new FileStream(outPutFile, FileMode.Create, FileAccess.ReadWrite))
{
PdfReader pdfReader = new PdfReader(reader);
PdfStamper pdfStamper = new PdfStamper(pdfReader, newPDF);
for (int page = 1; page <= pdfReader.NumberOfPages; page++)
{
PdfContentByte pdfContent = pdfStamper.GetOverContent(page);
Rectangle mediabox = pdfReader.GetPageSize(page);
pdfContent.BeginText();
pdfContent.ShowTextAligned(0, "someText", xLocation, mediabox.Height - yLocation , 0);
pdfContent.EndText();
}
pdfStamper.Close();
}
答案 1 :(得分:0)
我在这里Add Header and Footer for PDF using iTextsharp找到了解决方案(几乎显示了页码而不是总页数)。