图像不以PDF格式显示

Question

我有一个相当简单的HTML页面通过asp.net呈现.通过HtmlRenderer.PdfSharp运行后,它在PDF中看起来很漂亮,除了图像没有出现.只是PDF中缺少图像的红色X,即使网页本身确实正确显示图像.

这是我的HtmlRenderer.PdfSharp代码:

public void BuildPDF( string url, string pdfPath ) {
   string html = GetHTML(url);
   Byte[] res = null;
   using( MemoryStream ms = new MemoryStream() ) {
      using( FileStream file = new FileStream(pdfPath, FileMode.Create, FileAccess.Write) ) {
         byte[] bytes = new byte[ms.Length];
         var pdf = TheArtOfDev.HtmlRenderer.PdfSharp.PdfGenerator.GeneratePdf(html, PdfSharp.PageSize.A4);
         pdf.Save(ms);
         res = ms.ToArray();
         file.Write(res, 0, res.Length);
         ms.Close();
      }
   }
}

private string GetHTML(string url) {
   string html = string.Empty;
   HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
   request.AutomaticDecompression = DecompressionMethods.GZip;

   using( HttpWebResponse response = (HttpWebResponse)request.GetResponse() )
   using( Stream stream = response.GetResponseStream() )
   using( StreamReader reader = new StreamReader(stream) ) {
      html = reader.ReadToEnd();
   }

   return html;
}

以下是PDF中不呈现的img HTML: <img src="images/ChartImg.png" />

我怎么解决这个问题？

Answer 1

使用图像的绝对路径.

<img src="http://example.org/images/ChartImg.png" />

您可以解析html并在将其传递给pdf转换器之前先进行字符串替换.