Html转换为PDF不显示Unicode字符

Question

Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition",
             "attachment;filename=GridViewExport.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);

StringReader html = new StringReader(sb.ToString());

byte[] byteArray = Encoding.UTF8.GetBytes(sb.ToString());
MemoryStream stream = new MemoryStream(byteArray);

Response.Clear();
using (iTextSharp.text.Document document = new iTextSharp.text.Document())
{
      PdfWriter writer = PdfWriter.GetInstance(document, Response.OutputStream);
      document.Open();
      iTextSharp.tool.xml.XMLWorkerHelper.GetInstance().ParseXHtml(
      writer, document, stream, new System.Text.UTF8Encoding()
   );
}
Response.End();

那么，因为我有

，所以pdf不显示unicode字符的原因可能是什么

byte[] byteArray = Encoding.UTF8.GetBytes(sb.ToString());

和

.ParseXHtml(writer, document, stream, new System.Text.UTF8Encoding());

Answer 1

Here is the few steps to display unicode characters in converting Html to Pdf

1. 创建HTMLWorker
2. 注册unicode字体并指定它
3. 创建样式表并将编码设置为Identity-H
4. 将样式表分配给html解析器

5. 检查以下代码

       TextReader reader = new StringReader(html);
       Document document = new Document(PageSize.A4, 30, 30, 30, 30);
       PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(FileName, FileMode.Create));
       HTMLWorker worker = new HTMLWorker(document);
       document.Open();
       FontFactory.Register("C:\\Windows\\Fonts\\ARIALUNI.TTF", "arial unicode ms");
       iTextSharp.text.html.simpleparser.StyleSheet ST = new iTextSharp.text.html.simpleparser.StyleSheet();
       ST.LoadTagStyle("body", "encoding", "Identity-H");
       worker.Style = ST;
       worker.StartDocument();
   

检查以下链接以获取更多理解....

• Display Unicode characters in converting Html to Pdf

使用此方法在从HTML转换为PDF时也会显示印地语，土耳其语和特殊字符。查看下面的演示图片。