Stack empty使用iTextSharp将HTML转换为PDF时出错 [英] Stack empty Error when using iTextSharp for converting HTML to PDF

问题描述

我想以PDF格式导出我的htmlcode

I want to export in pdf my htmlcode

var document = new Document();
            string filePath = Server.MapPath("~/generatedBook");
            string exceptionPath = Server.MapPath("~/exceptions");
            PdfWriter pdfWriter = PdfWriter.GetInstance(document,
            new FileStream(filePath + "/Book"+_IdSes+".pdf", FileMode.Create));
            pdfWriter.SetFullCompression();
            pdfWriter.StrictImageSequence = true;
            pdfWriter.SetLinearPageMode();


            try
            {
                document.SetPageSize(PageSize.A4.Rotate());
                document.SetPageSize(new Rectangle(792f, 612f)); // 11" x 8.5"

//这里它给我异常堆栈是空的

//here it it gives me exception stack is empty

List<iTextSharp.text.IElement> htmlarraylist = 
 iTextSharp.text.html.simpleparser.HTMLWorker.ParseToList(new 
                                         StringReader(htmlcode.ToString()), st);

// htmlcode的类型为StringBuilder

//htmlcode is of type StringBuilder

foreach (IElement t in htmlarraylist)
                {
                    document.Add((IElement)t);
                }


                document.Close();

完全例外

System.InvalidOperationException: Stack empty.
   at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource)
   at System.Collections.Generic.Stack`1.Pop()
   at iTextSharp.text.html.simpleparser.HTMLWorker.EndElement(String tag)
   at iTextSharp.text.xml.simpleparser.SimpleXMLParser.ProcessTag(Boolean start)
   at iTextSharp.text.xml.simpleparser.SimpleXMLParser.Go(TextReader reader)
   at iTextSharp.text.xml.simpleparser.SimpleXMLParser.Parse(ISimpleXMLDocHandler doc,          
   ISimpleXMLDocHandlerComment comment, TextReader r, Boolean html)
   at iTextSharp.text.html.simpleparser.HTMLWorker.Parse(TextReader reader)

有什么想法吗？提前谢谢

Any idea? thanks in advance

推荐答案

HTMLWorker已弃用，不会被维护。它被xml-worker取代。

HTMLWorker is deprecated and won't be maintained. it's replaced with xml-worker.

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