itextsharp“剃刀到html”工作正常，但“到pdf”忽略样式

Question

我想知道 itextsharp 是否只接受<table>。使用<div>s 有问题吗？

下面的外部 css 文件是从 cshtml 调用的。相同的代码可以很好地创建 html，使用 pdf 失败。我正在使用XMLWorkerHelper。

RenderViewToString 方法：

public class HtmlViewRenderer
{
    public string RenderViewToString(Controller controller, string viewName, object viewData)
    {
        var renderedView = new StringBuilder();
        using (var responseWriter = new StringWriter(renderedView))
        {
            var fakeResponse = new HttpResponse(responseWriter);
            var fakeContext = new HttpContext(HttpContext.Current.Request, fakeResponse);
            var fakeControllerContext = new ControllerContext(new HttpContextWrapper(fakeContext), controller.ControllerContext.RouteData, controller.ControllerContext.Controller);

            var oldContext = HttpContext.Current;
            HttpContext.Current = fakeContext;

            using (var viewPage = new ViewPage())
            {
                var html = new HtmlHelper(CreateViewContext(responseWriter, fakeControllerContext), viewPage);
                html.RenderPartial(viewName, viewData);
                HttpContext.Current = oldContext;
            }
        }

   return renderedView.ToString();
}
private static ViewContext CreateViewContext(TextWriter responseWriter, ControllerContext fakeControllerContext)
{
        return new ViewContext(fakeControllerContext, new FakeView(), new ViewDataDictionary(), new TempDataDictionary(), responseWriter);
}
}

StandardPdfRenderClass - 渲染方法：

public class StandardPdfRenderer
{
    private const int HorizontalMargin = 10;
    private const int VerticalMargin = 10;

    public byte[] Render(string htmlText, string pageTitle)
    {

        byte[] renderedBuffer;

        //BaseFont Vn_Helvetica = BaseFont.CreateFont(@"C:\Windows\Fonts\arial.ttf", "Identity-H", iTextSharp.text.pdf.BaseFont.EMBEDDED);
        BaseFont Vn_Helvetica = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252, false);
        Font fontNormal = new Font(Vn_Helvetica, 12, iTextSharp.text.Font.NORMAL);
        using (var outputMemoryStream = new MemoryStream())
        {
            using (var pdfDocument = new Document(PageSize.A3, HorizontalMargin, HorizontalMargin, 110, 30))
            {
                PdfWriter pdfWriter = PdfWriter.GetInstance(pdfDocument, outputMemoryStream);
                pdfWriter.CloseStream = false;
                pdfWriter.PageEvent = new PrintHeaderFooter();

                using (var htmlViewReader = new StringReader(TurkceKarakter(htmlText)))
                {
                   pdfDocument.Open(); 
                   XMLWorkerHelper.GetInstance().ParseXHtml(pdfWriter, pdfDocument, htmlViewReader);
                    //used to be like this. Changed it to include XMLWorkerHelper up there.
                    //using (var htmlWorker = new HTMLWorker(pdfDocument))
                    //{                          
                    //    htmlWorker.Parse(htmlViewReader);
                    //}
                }
            }

            renderedBuffer = new byte[outputMemoryStream.Position];
            outputMemoryStream.Position = 0;
            outputMemoryStream.Read(renderedBuffer, 0, renderedBuffer.Length);
        }

        return renderedBuffer;
    }

    public string TurkceKarakter(string text)
    {

        text = text.Replace("İ", "I");
        text = text.Replace("ı", "i");
        text = text.Replace("Ş", "S");
        text = text.Replace("ş", "s");
        text = text.Replace("Ğ", "G");
        text = text.Replace("ğ", "g");
        text = text.Replace("Ö", "Ö");
        text = text.Replace("ö", "ö");
        text = text.Replace("ç", "c");
        text = text.Replace("Ç", "C");
        text = text.Replace("ü", "ü");
        text = text.Replace("Ü", "Ü");
        return text;
    }
}

这是cshtml：

<div id="maincontainer">
<div id="maincontent">        
    <div class="section group">
        <div class="col span_1_of_1">
            <div class="baslik"><span class="mavi">.</span><h3>CV</h3></div>
        </div>
    </div>
    <div class="section group">
        <div class="col span_1_of_2">
            <div> 
                <img src="@(helper.StaticUrl + helper.Detay.Detay.GenelBilgi.Resim)" width="180" alt="Resim" />                       
            </div>
            <br /><br /><br /><br />
            <div class="col span_1_of_1 clearfix">
            <div class="isim">
                <span class="adisoyadi">@(helper.Detay.Detay.GenelBilgi.AdiSoyadi.ToUpper())</span> 
                               </div>
            </div>
        </div>          
        <div class="col span_1_of_2 clearfix">
            <dl class="iletisim">
                <dt class="uk-icon-mobile">Telefon</dt>
                <dd>@(helper.Detay.Detay.GenelBilgi.CepTelefonUlkeKod) @(helper.Detay.Detay.GenelBilgi.CepTelefon) </dd>
                <dt class=" uk-icon-email">E-mail</dt>
                <dd>@(helper.Detay.Detay.GenelBilgi.Email)</dd>
                <dt class="uk-icon-adres">Adres</dt>
                <dd>@(helper.Detay.Detay.GenelBilgi.Adres) </dd>
                <dt class="uk-icon-adres">Doğum Tarihi</dt>
                <dd>@(helper.Detay.Detay.GenelBilgi.DogumTarihi)</dd>
                <dt class="uk-icon-adres">Medeni Durum</dt>
                <dd>@(helper.Detay.Detay.GenelBilgi.MedeniDurum)</dd>
                @if (!string.IsNullOrEmpty(helper.Detay.Detay.GenelBilgi.AskerlikDurum))
                {
                    <dt class=" uk-icon-adres">Askerlik</dt>
                    <dd>@(helper.Detay.Detay.GenelBilgi.AskerlikDurum)</dd>
                }
                <dt class="uk-icon-adres">Çalışma Durumu</dt>
                <dd>@(helper.Detay.Detay.GenelBilgi.CalismaDurum.HasValue ? helper.Detay.Detay.GenelBilgi.CalismaDurum.Value ? "Çalışıyor" : "Çalışmıyor" : "")</dd>
            </dl>
        </div>          
        <div class="col span_1_of_1 aciklama">              
        </div>
    </div>   
 </div>
 </div>

Answer 1

您可以将它用于非常基本的 html 到 pdf，但即使他们的网站也表示 xml worker 确实是一个模板系统。 itext functionality comparison。它确实不支持高级布局等...我最近在我参与的一个项目中遇到了这个问题，以及为什么我开始研究不同的工具，例如下面的工具。

如果您有能力使用不同的工具，您可以尝试使用像 TuesPechkin 这样的库，它是 wkhtmltopdf 的 .net 包装器。 wkhtmltopdf 使用 QT Webkit 渲染引擎，并且对 html5/css3 有强大的支持。