C# Net 使用 openxml 提取word中的文本和图片并转为Html

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加入包：OpenXml

创建文件：Read.cs

复制下面全部代码到文件 Read.cs

using DocumentFormat.OpenXml; using DocumentFormat.OpenXml.Packaging; using DocumentFormat.OpenXml.Wordprocessing; using System; using System.Collections.Generic; using System.IO; using System.Text; using System.Xml; using System.Xml.Xsl; namespace YCBX.Office.WordXml { public class WordRead { public static List<string> ReadToHtml(string wordPathStr) { return ReadToHtml(new FileStream(wordPathStr, FileMode.Open)); } public static List<string> ReadToHtml(Stream wordStream) { using (WordprocessingDocument doc = WordprocessingDocument.Open(wordStream, false)) { //XmlWriterSettings settings = new XmlWriterSettings() { OmitXmlDeclaration = true, ConformanceLevel = ConformanceLevel.Auto,DoNotEscapeUriAttributes=true}; List<string> paragraphHtmls = new List<string>(); MainDocumentPart mainPart = doc.MainDocumentPart; Body body = doc.MainDocumentPart.Document.Body; //段落 foreach (var paragraph in body.Elements<Paragraph>()) { StringBuilder paragraphHtml = new StringBuilder(); //块 foreach (var run in paragraph.ChildElements) { if (run is Run) { foreach (OpenXmlElement openXmlElement in run.Elements()) { //软回车 if (openXmlElement is Break br) { paragraphHtmls.Add(paragraphHtml.ToString()); paragraphHtml = new StringBuilder(); } //文字块 else if (openXmlElement is Text text) { paragraphHtml.Append(text.Text); } //图像块 else if (openXmlElement is Drawing drawing) { //得到图像的内嵌ID（外嵌没做处理） var inline = drawing.Inline; var extent = inline.Extent; var pic = inline.Graphic.GraphicData.GetFirstChild<DocumentFormat.OpenXml.Drawing.Pictures.Picture>(); var embed = pic.BlipFill.Blip.Embed.Value; //得到图像流 var part = mainPart.GetPartById(embed); var stream = part.GetStream(); //流转2进制 byte[] bytes = new byte[stream.Length]; stream.Read(bytes, 0, bytes.Length); //2进制转base64 string imgHtml = $"<img width='{ImageExtent.EMU_TO_PX((decimal)extent.Cx.Value).ToString("0.")}' height='{ImageExtent.EMU_TO_PX((decimal)extent.Cy.Value).ToString("0.")}' src='data:{part.ContentType};base64," + Convert.ToBase64String(bytes) + "' />"; paragraphHtml.Append(imgHtml); } } } //else if(run is DocumentFormat.OpenXml.Math.OfficeMath math) //{ // var x = new XmlDocument(); // x.LoadXml(math.OuterXml); // using var ms = ConvertToMatchMl(x, settings); // paragraphHtml.Append(ConvertToLatex(settings, ms)); //} } paragraphHtmls.Add(paragraphHtml.ToString()); } return paragraphHtmls; } } /// <summary> /// 合并文档 /// </summary> /// <param name="finalFile"></param> /// <param name="files"></param> public static void Combine(string finalFile, List<string> files) { if (files.Count < 2) { return; } File.Copy(files[0], finalFile, true); using (WordprocessingDocument doc = WordprocessingDocument.Open(finalFile, true)) { Body b = doc.MainDocumentPart.Document.Body; for (int i = 1; i < files.Count; i++) { using (WordprocessingDocument doc1 = WordprocessingDocument.Open(files[i], true)) { foreach (var inst in doc1.MainDocumentPart.Document.Body.Elements()) { b.Append(inst.CloneNode(true)); } } } } } private string ConvertToLatex(XmlWriterSettings settings, Stream ms) { var latexTransform = new XslCompiledTransform(); latexTransform.Load(Path.Combine(AppContext.BaseDirectory, "xsltml", "mmltex.xsl"), new XsltSettings(true,true),new XmlUrlResolver() ); using var la = new MemoryStream(); latexTransform.Transform(new XmlTextReader(ms), XmlWriter.Create(la, settings)); la.Seek(0, SeekOrigin.Begin); StreamReader sr = new StreamReader(la, Encoding.UTF8); return sr.ReadToEnd(); } private Stream ConvertToMatchMl(XmlDocument xmlDocument, XmlWriterSettings settings) { var ms = new MemoryStream(); var xslTransform = new XslCompiledTransform(); xslTransform.Load(Path.Combine(AppContext.BaseDirectory, "xsltml", "OMML2MML.XSL")); xslTransform.Transform(xmlDocument, XmlWriter.Create(ms, settings)); ms.Seek(0, SeekOrigin.Begin); return ms; } } }

创建文件：ImageExtent.cs

复制下面全部代码到文件 ImageExtent.cs

using System; using System.Collections.Generic; using System.Text; namespace YCBX.Office.WordXml { /// <summary> /// 图像长度单位转换 /// </summary> public class ImageExtent { private const decimal CM_TO_PX = 96M; private const decimal INCH_TO_CM = 2.54M; /// <summary> /// 厘米到EMU（English Metric Unit) /// </summary> private const decimal CM_TO_EMU = 360000M; /// <summary> /// EMU（English Metric Unit) 到像素（px） /// </summary> /// <param name="EMU"></param> public static decimal EMU_TO_PX(decimal EMU) { return EMU / CM_TO_EMU / INCH_TO_CM * CM_TO_PX; } } }

调用方法：

1	`var` `sss =` `new` `Read().ParagraphHtmlAll("1.docx");`

word文件中为：

创建一个test.html，将代码放在<body></body>中，查看效果为：

完成

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