如何使用iTextsharp在服务器地图路径上保存pdf

Question

我使用以下代码生成pdf,它是完美的工作:

  string strQuery = "select * from userdata";
        SqlCommand cmd = new SqlCommand(strQuery);
        DataTable dt = GetData(cmd);

        //Create a dummy GridView
        GridView GridView1 = new GridView();
        GridView1.AllowPaging = false;
        GridView1.DataSource = dt;
        GridView1.DataBind();

        Response.ContentType = "application/pdf";
        Response.AddHeader("content-disposition", "attachment;filename=GridViewExport.pdf");
        Response.Cache.SetCacheability(HttpCacheability.NoCache);
        StringWriter sw = new StringWriter();
        HtmlTextWriter hw = new HtmlTextWriter(sw);
        GridView1.RenderControl(hw);

        StringReader sr = new StringReader(sw.ToString());
        Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 10f, 0f);
        HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
        PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
        pdfDoc.Open();

        htmlparser.Parse(sr);
        pdfDoc.Close();

        Response.Write(pdfDoc);
        Response.End();  

它运作良好.但我能够将此pdf保存到服务器地图路径上.

我在pdfDoc.Close()之后写了下面的内容.

   String path  = Server.MapPath("~/mypdf.pdf");

但它不是将pdf保存到服务器映射路径.

我怎样才能做到这一点？

Answer 1

您当前正在将文档写入以下输出流: Response.OutputStream

一旦你这样做pdfDoc.Close();,PDF字节就消失了.

如果要将PDF保存到服务器,则需要替换以下行:

PdfWriter.GetInstance(pdfDoc, Response.OutputStream);

有了这条线:

PdfWriter.GetInstance(pdfDoc, new FileStream(context.Server.MapPath("~") + "mypdf.pdf");

现在您的字节不会被发送到浏览器,但PDF将在您的服务器上创建.