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Question

我使用ASP.NET 3.5与iTextSharp的，我有下面的代码保存在新的文件：

var templatePath = Server.MapPath(@"~/Templates/template1.pdf"); 
var newFilePath = Server.MapPath(@"~/TempFiles/new.pdf"); 

PdfReader pdfReader = new PdfReader(templatePath); 
PdfStamper pdfStamper = new PdfStamper(pdfReader, new FileStream(newFilePath, FileMode.Create)); 
AcroFields pdfFormFields = pdfStamper.AcroFields; 
pdfFormFields.SetField("Box1", "007"); 
pdfFormFields.SetField("Box2", "123456"); 
pdfStamper.FormFlattening = false; 
pdfStamper.Close(); 
Response.ClearContent(); 
Response.Buffer = true; 
Response.ContentType = "application/pdf"; 
Response.AddHeader("Content-Disposition", "attachment;filename=new.pdf")); 
Response.WriteFile(newFilePath); 
Response.End(); 

上面的代码填写一份PDF文件并保存新文件的文件夹TempFiles中。然后提示用户保存或打开文件。我可以在不将文件保存到TempFiles位置的情况下实现相同的功能吗？

Answer 1

是的，你可以直接写入响应的输出流。我没有使用过PdfStamper，但这里产生新的PDF文件时，我该怎么做：

doc = new iTextSharp.text.Document(PageSize.A4); 
writer = iTextSharp.text.pdf.PdfWriter.GetInstance(doc, Response.OutputStream); 
writer.SetFullCompression(); 
doc.Open(); 

它看起来像你通过流进PdfStamper构造，所以下面应该工作：

var templatePath = Server.MapPath(@"~/Templates/template1.pdf"); 

PdfReader pdfReader = new PdfReader(templatePath); 
Response.ClearContent(); 
Response.Buffer = true; 
Response.ContentType = "application/pdf"; 
Response.AddHeader("Content-Disposition", "attachment;filename=new.pdf")); 
PdfStamper pdfStamper = new PdfStamper(pdfReader, Response.OutputStream); 
AcroFields pdfFormFields = pdfStamper.AcroFields; 
pdfFormFields.SetField("Box1", "007"); 
pdfFormFields.SetField("Box2", "123456"); 
pdfStamper.FormFlattening = false; 
pdfStamper.Close(); 
Response.End();