转换HTML Contenttpo Word文档时出现错误

Question

您好，我正在使用HTml Agility和Openxml将我的html内容转换为word文件内容。

<div>
<div id="container">
<div>
<div>
<!--content starts here//-->
<form name="questions" method="post">
<img src="../../content/0/Static UPload/Divya_3LevelLeftMenu_Operating System v8.0 English/unit9/lesson27/../../images/less_title_27.jpg" width="750" height="75">
<div id="title">Exercise
<table border="0" cellspacing="20" cellpadding="0">
  <tr>
    <td><b> Student's Name:&nbsp;</b><br>
      <input type="text" name="b1" size="45"></td>
    <td><b>Class:</b><br>
      <input type="text" name="b2" size="45"></td>
  </tr>
</table>
<td width="176" align="left">&nbsp;</td>
    <tr><td width="779" align="left">&nbsp;</td>
    </tr>
       <ol>
      <li>Describe the purpose of Windows Update. 
      <p align="left"><textarea name="a1" rows="10" wrap="VIRTUAL" cols="55"></textarea></p>
      </li>
    </ol>

    <ol start="2">
      <li>Explain why using Windows Update is critical to maintaining an operating system.
        <p align="left"><textarea name="a2" rows="10" wrap="VIRTUAL" cols="55"></textarea></p>
      </li>
    </ol>
    <ol start="3">
      <li>Summarize the process used to access and install Windows Updates.  
        <p align="left"><textarea name="a3" rows="10" wrap="VIRTUAL" cols="55"></textarea></p>
      </li>
    </ol>
    <ol start="4">
      <li>Compare and contrast using Windows Update and using a Windows Service Pack. 
        <p align="left"><textarea name="a4" rows="10" wrap="VIRTUAL" cols="55"></textarea></p>
      </li>
    </ol>
    <center><p><b>Note: You must print your completed exercise
    to submit to your instructor.</b><br>
    <b class="style1"><u>Do Not</u></b> close this window without printing your exercise or your answers will be lost.<br><br>
            <input onclick="reLoadMe(document.questions) " type="button" value="Print Preview">
      </p>
    </center>
</form>
    <div align="center"><a href="#top"><img src="../../content/0/Static UPload/Divya_3LevelLeftMenu_Operating System v8.0 English/unit9/lesson27/../../images/back_to_top.jpg" alt="" width="40" height="21" border="0"></a>

</div></div></div></div></div></div>

这是我用来转换的html内容。但是解析时出现以下错误。

   at NotesFor.HtmlToOpenXml.TableContext.get_CurrentTable()
   at NotesFor.HtmlToOpenXml.HtmlConverter.ProcessTableColumn(HtmlEnumerator en)
   at NotesFor.HtmlToOpenXml.HtmlConverter.ProcessHtmlChunks(HtmlEnumerator en, String endTag)
   at NotesFor.HtmlToOpenXml.HtmlConverter.Parse(String html)
   at WebApplication3.WebForm3.Button1_Click(Object sender, EventArgs e) in C:\Users\USER\Documents\Visual Studio 2008\Projects\Piyush_training\WebApplication3\WebForm3.aspx.cs:line 102

我的代码如下。

   using DocumentFormat.OpenXml.Drawing;
    using NotesFor.HtmlToOpenXml;
    using System.IO;
    using DocumentFormat.OpenXml.Packaging;
    using DocumentFormat.OpenXml.Wordprocessing;
    using wp = DocumentFormat.OpenXml.Drawing.Wordprocessing;
    using DocumentFormat.OpenXml;
    using HtmlAgilityPack;
    using System.Text;
 protected void Button1_Click(object sender, EventArgs e)
    {
        const string filename = "C:/Temp/test.docx";
        Response.ContentEncoding = System.Text.Encoding.UTF7;
        System.Text.StringBuilder SB = new System.Text.StringBuilder();
        System.IO.StringWriter SW = new System.IO.StringWriter();

string pagecontent = html内容之上; HtmlAgilityPack.HtmlDocument doc =新的HtmlAgilityPack.HtmlDocument（）; doc.LoadHtml（pagecontent）; 如果（doc == null）; doc.OptionCheckSyntax = true; doc.OptionAutoCloseOnEnd = true; doc.OptionFixNestedTags = true; int errorCount = doc.ParseErrors.Count（）; 字符串输出=“”;

            doc.Save(SW);
            System.Web.UI.HtmlTextWriter htmlTW = new System.Web.UI.HtmlTextWriter(SW);
            strBody = "<html>" + "<body>" + "<div><b>" + htmlTW.InnerWriter.ToString() + "</b></div>" + "</body>" + "</html>";

            string html = strBody; 

           try
            {
                using (MemoryStream generatedDocument = new MemoryStream())
                {
                    using (WordprocessingDocument package = WordprocessingDocument.Create(generatedDocument, WordprocessingDocumentType.Document))
                    {
                        MainDocumentPart mainPart = package.MainDocumentPart;
                        if (mainPart == null)
                        {
                            mainPart = package.AddMainDocumentPart();
                            new Document(new Body()).Save(mainPart);
                        }

                        HtmlConverter converter = new HtmlConverter(mainPart);
                        converter.ExcludeLinkAnchor = true;
                        converter.RefreshStyles();
                        converter.ImageProcessing = ImageProcessing.AutomaticDownload;
                        Body body = mainPart.Document.Body;
                        converter.ConsiderDivAsParagraph = false;

                        var paragraphs = converter.Parse(html);
                        for (int i = 0; i < paragraphs.Count; i++)
                        {
                            body.Append(paragraphs[i]);
                        }

                        mainPart.Document.Save();
                    }

                    File.WriteAllBytes(filename, generatedDocument.ToArray());
                }

                System.Diagnostics.Process.Start(filename);
            }
            catch (Exception ex)
            {
                Response.Write(ex.ToString());
            }
        }

Answer 1

使用它来获取有效的图像内容。

要使用AltChunk方法，您必须使用现有文件。首先创建包含所有内容的动态文件，因为altChunk不接受空白文件。

附加html内容。

try
{
    var domainNameURL = "yoursite.com/";
    var strBody = "<html>" + "<body>" + "<div> Word File </div>" + "</body>" + "</html>";
    using (MemoryStream generatedDocument = new MemoryStream())
    {
        using (WordprocessingDocument package = WordprocessingDocument.Create(generatedDocument, WordprocessingDocumentType.Document))
        {
            MainDocumentPart mainPart = package.MainDocumentPart;
            if (mainPart == null)
            {
                mainPart = package.AddMainDocumentPart();
                new Document(new Body()).Save(mainPart);
            }

            HtmlConverter converter = new HtmlConverter(mainPart);
            converter.ExcludeLinkAnchor = true;
            converter.RefreshStyles();
            converter.ImageProcessing = ImageProcessing.AutomaticDownload;
            converter.BaseImageUrl = new Uri(domainNameURL + "Images/");

            Body body = mainPart.Document.Body;
            converter.ConsiderDivAsParagraph = false;

            var paragraphs = converter.Parse(strBody);
                for (int i = 0; i < paragraphs.Count; i++)
                {
                    body.Append(paragraphs[i]);
                }

            mainPart.Document.Save();
        }

        File.WriteAllBytes(filename, generatedDocument.ToArray());
    }

    using (WordprocessingDocument myDoc = WordprocessingDocument.Open(filename, true))
    {
        XNamespace w = "http://schemas.openxmlformats.org/wordprocessingml/2006/main";
        XNamespace r = "http://schemas.openxmlformats.org/officeDocument/2006/relationships";
        string altChunkId = "AltChunkId1";
        MainDocumentPart mainPart = myDoc.MainDocumentPart;
        AlternativeFormatImportPart chunk = mainPart.AddAlternativeFormatImportPart("application/xhtml+xml", altChunkId);

        using (Stream chunkStream = chunk.GetStream(FileMode.Create, FileAccess.Write))
        using (StreamWriter stringStream = new StreamWriter(chunkStream))
            stringStream.Write(html);
        XElement altChunk = new XElement(w + "altChunk",
        new XAttribute(r + "id", altChunkId)
        );
        XDocument mainDocumentXDoc = GetXDocument(myDoc);
        mainDocumentXDoc.Root
            .Element(w + "body")
            .Elements(w + "p")
            .Last()
            .AddAfterSelf(altChunk);
        SaveXDocument(myDoc, mainDocumentXDoc);
    }
    System.Diagnostics.Process.Start(filename);
}
catch (Exception ex)
{
    Response.Write(ex.ToString());
}

Answer 2

您可能想尝试另一种方法来从HTML组装Word文档。根据您的要求，您可以采取以下两种方法之一：

或：

使用
altChunk

altChunk，是Open XML文字处理的一项特殊功能标记，使您可以嵌入整个Open XML文档或
html页面
在文档中的特定位置[埃里克·怀特（Eric White）有许多博客文章描述了此过程，以下是他的文章的摘要，该文章突出显示了嵌入html：
使用Open XML SDK的V2：
using (WordprocessingDocument myDoc = WordprocessingDocument.Open("Test1.docx", true)) { string altChunkId = "AltChunkId1"; MainDocumentPart mainPart = myDoc.MainDocumentPart; AlternativeFormatImportPart chunk = mainPart.AddAlternativeFormatImportPart( AlternativeFormatImportPartType.WordprocessingML, altChunkId); using (FileStream fileStream = File.Open("TestInsertedContent.docx", FileMode.Open)) chunk.FeedData(fileStream); AltChunk altChunk = new AltChunk(); altChunk.Id = altChunkId; mainPart.Document .Body .InsertAfter(altChunk, mainPart.Document.Body.Elements<Paragraph>().Last()); mainPart.Document.Save(); }
整个文章以及示例代码（在底部）：How to Use altChunk for Document Assembly

Answer 3

在阅读之前的答案和此处的答案后，我使用此功能将庞大的HTML（带有嵌入式图像）转换为Word：https://stackoverflow.com/a/18152334/1863970

public static byte[] HtmlToWord(string html) { using (var generatedDocument = new MemoryStream()) { using (var package = WordprocessingDocument.Create(generatedDocument, WordprocessingDocumentType.Document)) { MainDocumentPart mainPart = package.MainDocumentPart; if (mainPart == null) { mainPart = package.AddMainDocumentPart(); new Document(new Body()).Save(mainPart); } HtmlConverter converter = new HtmlConverter(mainPart); Body body = mainPart.Document.Body; string altChunkId = "myId"; var memoryStream = new MemoryStream(Encoding.UTF8.GetBytes("<html><head></head><body>" + html + "</body></html>")); // Create alternative format import part. var formatImportPart = mainPart.AddAlternativeFormatImportPart(AlternativeFormatImportPartType.Html, altChunkId); // Feed HTML data into format import part (chunk). formatImportPart.FeedData(memoryStream); var altChunk = new AltChunk(); altChunk.Id = altChunkId; mainPart.Document.Body.Append(altChunk); mainPart.Document.Save(); } return generatedDocument.ToArray(); } }

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