标头重复，并在错误的路径中调用文件 [英] Duplicate headers and Calling the file in the wrong path

问题描述

我试图通过单击链接从我的网页创建并显示pdf.但是当系统必须显示它出问题时.

I'm trying to create and showing a pdf from my webpage by clicking a link. But when the system has to show it goes something wrong.

使用此命令时

返回新的FileStreamResult(fileStream，"application/pdf");

return new FileStreamResult(fileStream, "application/pdf");

它显示了一个空的pdf文件:

It shows a empty pdf file:

///C:/用户/我/下载/C--Apps-MyWebSolution-MyWeb-Documenten-MyList_198721.pdf

///C:/Users/Me/Downloads/C--Apps-MyWebSolution-MyWeb-Documenten-MyList_198721.pdf

它保存为:C:\ Apps \ MyWebSolution \ MyWeb \ Documenten \ MyList_198721％20.pdf

It is saved as: C:\Apps\MyWebSolution\MyWeb\Documenten\MyList_198721%20.pdf

当我使用此命令时:

返回File(fileStream，"application/pdf"，fullFileName);

return File(fileStream, "application/pdf", fullFileName);

然后我收到一条错误消息:

then I get an error message:

ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_DISPOSITION

ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_DISPOSITION

我在做什么错了?

public FileStreamResult PDFGenerator(string html, string fileName)
{
    string fullFileName = Server.MapPath("~/Documenten/" + fileName + ".pdf");
    Stream fileStream = CreatePDF(html, fullFileName);

    HttpContext.Response.AddHeader("content-disposition", "attachment; filename=" + fullFileName);

    //return new FileStreamResult(fileStream, "application/pdf");
    return File(fileStream, "application/pdf", fullFileName);
}

如果我不得不发布更多内容.我会做的.但我认为这不是必需的.

If I had to post more. I'll do it. But I don't think it is needed.

推荐答案

这是我的有效结果:

这是从视图调用的

    public HttpResponseBase HitlijstNaarPdf(int? AID_Hitlijst = 0)
    {
        SelectPeriode(AID_Hitlijst);
        var model = new HitlijstModel();

        GetHitlijstSettings();
        string sHtmlInhoud = ViewRenderer.RenderView("Hitlijst", model, ControllerContext);
        string fileName = "Hitlijst_" + AID_Hitlijst.ToString() + ".pdf";

        return CreatePDF(sHtmlInhoud, fileName);
    }

    private HttpResponseBase CreatePDF(string html, string fileName)
    {
        string convertingTool = Server.MapPath("~/bin/wkhtmltopdf.exe ");

        ProcessStartInfo psi = new ProcessStartInfo(convertingTool);
        psi.UseShellExecute = false;
        psi.RedirectStandardOutput = true;
        psi.RedirectStandardInput = true;
        psi.RedirectStandardError = true;
        psi.CreateNoWindow = true;

        Process myProcess = Process.Start(psi);
        myProcess.WaitForExit();
        myProcess.Close();

        string fullFileName = Server.MapPath("~/Documenten/" + fileName);
        if (!System.IO.File.Exists(fullFileName))
        {
            Document pdfDocument = new Document(PageSize.A4, 30, 30, 30, 30);

            PdfWriter writer = PdfWriter.GetInstance(pdfDocument, new FileStream(fullFileName, FileMode.Create));
            PdfWriter.GetInstance(pdfDocument, Response.OutputStream);
            pdfDocument.Open();

            XMLWorkerHelper.GetInstance().ParseXHtml(writer, pdfDocument, new StringReader(html));
            pdfDocument.Close();
        }

        Response.Clear();
        WebClient client = new WebClient();
        Byte[] buffer = client.DownloadData(fullFileName); 
        Response.AddHeader("content-disposition", "attachment;filename=" + fileName);
        Response.ContentType = "application/pdf";
        Response.BinaryWrite(buffer);

        return Response;
    }

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