RazorPDF将pdf文件保存到MVC4中的服务器目录

Question

我目前正在使用MVC4中的RazorPDF组装和显示PDF,并希望在返回视图的同时将PDF文件保存到文件系统.

控制器操作中的以下代码行调用视图:

return new PdfResult(claims, "PDF");

Answer 1

通过更改 RazorPDF 渲染方法的代码库，我最终能够将 pdf 写入目录系统。Rendor 方法创建一个与响应流关联的 PdfWriter 对象：

        // Associate output with response stream
        var pdfWriter = PdfWriter.GetInstance(document, viewContext.HttpContext.Response.OutputStream);
        pdfWriter.CloseStream = false;

解决方案是创建另一个与 FileStream 对象关联的 PdfWriter 对象，如下所示：

        // Create the pdf file in the directory system
        var fileStream = new FileStream(myPdfFilePath, FileMode.Create);
        var pdfWriter2 = PdfWriter.GetInstance(document, fileStream);

然后我关闭了这些对象：

        fileStream.Close();

        pdfWriter.Close();
        pdfWriter2.Close();

我必须将 RazorPDF 的 PdfResult 和 PdfView 类合并到我自己的项目中，并显着更改代码。原因是因为我还必须合并对将 pdf 发送给用户的电子邮件类的调用。

完整的 Render 方法如下所示：

    public void Render(ViewContext viewContext, TextWriter writer)
    {
        // generate view into string
        var sb = new System.Text.StringBuilder();
        TextWriter tw = new System.IO.StringWriter(sb);
        myResult.View.Render(viewContext, tw);
        var resultCache = sb.ToString();

        // detect itext (or html) format of response
        XmlParser parser;
        using (var reader = GetXmlReader(resultCache))
        {
            while (reader.Read() && reader.NodeType != XmlNodeType.Element)
            {
                // no-op
            }

            if (reader.NodeType == XmlNodeType.Element && reader.Name == "itext")
                parser = new XmlParser();
            else
                parser = new HtmlParser();
        }

        // Create a document processing context
        var document = new Document();
        document.Open();

        // Associate output with response stream
        var pdfWriter = PdfWriter.GetInstance(document, viewContext.HttpContext.Response.OutputStream);
        pdfWriter.CloseStream = false;

        // Create the pdf file in the directory system
        var fileStream = new FileStream(myPdfFilePath, FileMode.Create);
        var pdfWriter2 = PdfWriter.GetInstance(document, fileStream);

        // this is as close as we can get to being "success" before writing output
        // so set the content type now
        viewContext.HttpContext.Response.ContentType = "application/pdf";

        // parse memory through document into output
        using (var reader = GetXmlReader(resultCache))
        {
            parser.Go(document, reader);
        }

        fileStream.Close();

        // Send an email to the claimant
        Thread.Sleep(100);
        if (File.Exists(myPdfFilePath))
        {
            var subject = "PDF Documents";

            var body = Config.GetContent(ContentParams.CLAIM_DOCUMENT_EMAIL_BODY_TEXT);

            bool success;
            string errorMessage;

            Email.Send(myEmailAddress, subject, body, out success, out errorMessage, myPdfFilePath);
        }

        pdfWriter.Close();
        pdfWriter2.Close();

    }

如果此功能能够以某种方式合并到当前的 RazorPDF 项目中，那就太好了。