ITextSharp XMLWorker不显示图像

Question

我正在开发MVC应用程序，我对XMLWorker和ImageProvider有问题。我的图像没有显示在pdf afrer渲染html，它收到。

代码如下：

        var bytes = Encoding.UTF8.GetBytes(html);
        string cssPath = HttpContext.Current.Server.MapPath("~/Content");

        using (MemoryStream input = new MemoryStream(bytes))
        {
            MemoryStream output = new MemoryStream();
            using (Document pdfDoc = new Document(PageSize.LETTER, 50, 50, 50, 50))
            {
                using (PdfWriter pdfWrt = PdfWriter.GetInstance(pdfDoc, output))
                {
                    pdfWrt.CloseStream = false;
                    pdfWrt.PageEvent = new PdfWriterEvents("watermark");
                    pdfDoc.Open();
                    HtmlPipelineContext context = new HtmlPipelineContext(null);
                    context.SetTagFactory(iTextSharp.tool.xml.html.Tags.GetHtmlTagProcessorFactory());
                    context.SetImageProvider(new MyImageProvider());
                    var cssResolver = XMLWorkerHelper.GetInstance().GetDefaultCssResolver(true);
                    cssResolver.AddCssFile(cssPath + "\\main.css", true);
                    IPipeline pipeline = new CssResolverPipeline(cssResolver, new HtmlPipeline(context, new PdfWriterPipeline(pdfDoc, pdfWrt)));
                    var worker = new XMLWorker(pipeline, true);
                    var parser = new XMLParser();
                    parser.AddListener(worker);


                    using (TextReader sr = new StringReader(html))
                    {
                        parser.Parse(sr);
                    }
                    pdfDoc.Close();
                    byte[] test = output.GetBuffer();
                    File.WriteAllBytes(HttpContext.Current.Server.MapPath("~/Content/PDFs/test.pdf"), test);

                }
            }
        }

下面是我的ImageProvider实现：

public class MyImageProvider : AbstractImageProvider
{
    public override string GetImageRootPath()
    {
        return HttpContext.Current.Server.MapPath("~/Content/Images");
    }
} 

有什么想法吗？

Answer 1

我必须更改图像源标签，使其包含整个url才能正常工作。