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POiTextSharp Parse HTML Memory leak? HTMLWorker.ParseToList or Parse
 

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  1. POiTextSharp Parse HTML Memory leak? HTMLWorker.ParseToList or Parse
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    <p>When I try to parse a large html file with iTextSharp, my memory is increasing with 200mb +=</p> <p>I tried following methods:</p> <pre><code>public byte[] CreatePdfToBytArray(string foundText, StyleSheet styles = null, bool landscape = false) { using (var d = new Document()) { if (landscape) { d.SetPageSize(PageSize.A4.Rotate()); } using (var stream = new MemoryStream()) { foundText = foundText.Replace("&lt;br&gt;", "/n"); PdfWriter.GetInstance(d, stream); var stringReader = new StringReader(foundText); d.Open(); var parser = new HTMLWorker(d); List&lt;IElement&gt; parsedList = HTMLWorker.ParseToList(stringReader, styles); foreach (object item in parsedList) { d.Add((IElement) item); } d.Close(); stringReader.Close(); stringReader.Dispose(); return stream.ToArray(); } } } </code></pre> <p>And</p> <pre><code>protected byte[] ConvertHTMLToPDF(string HTMLCode) { using (var stream = new MemoryStream()) { //Render PlaceHolder to temporary stream var stringWrite = new StringWriter(); var htmlWrite = new HtmlTextWriter(stringWrite); var reader = new StringReader(HTMLCode); //Create PDF document var doc = new Document(PageSize.A4); var parser = new HTMLWorker(doc); PdfWriter.GetInstance(doc, stream); doc.Open(); doc.Add(new Paragraph("I hope this works for you.")); try { parser.Parse(reader); } catch (Exception ex) { //Display parser errors in PDF. var paragraph = new Paragraph("Error!" + ex.Message); Chunk text = paragraph.Chunks[0]; if (text != null) { text.Font.Color = BaseColor.RED; } doc.Add(paragraph); } finally { doc.Close(); parser.Close(); parser.FlushContent(); parser.Dispose(); reader.Close(); reader.Dispose(); } return stream.ToArray(); } } </code></pre> <p>Both make my memory spike, I know the issue is in the HTMLWorker.ParseToList method or the parse method, is there any way i can clear the memory?</p> <p>Thanks</p>
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    1. COJust so you know, `HTMLWorker` has been deprecated for many years in favor of `XMLWorker` so even if there was a memory leak it probably won't be fixed. How are you measuring memory usage? How "large" is a large HTML file? Is your HTML deeply nested and/or with a bunch of tables? You say "spike" which generally means "up then down", is that what you mean? Or do you mean if you called your code in a loop you would see a steady increase and it never releases? Both examples use a `MemoryStream`, if you get rid of that and just `ParseToList()` and just throw away does it still happen?
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      1. POiTextSharp Parse HTML Memory leak? HTMLWorker.ParseToList or Parse
      1. USChris Haas
    2. COThe HTML page is just a big table, the file is 200 kb and about 80 pages, my app pool memory is going up and stays that way --> 200 mb to 400, with the next pdf 600, ... And it stays that way. I also read that XMLWorker is in favor, but I cannot find this class, can you tell me in what NameSpace I can find it
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      1. POiTextSharp Parse HTML Memory leak? HTMLWorker.ParseToList or Parse
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    3. CO`XMLWorker` lives in a separate library, http://sourceforge.net/projects/itextsharp/files/xmlworker/
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      1. USChris Haas
 

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