1、最开始用的spire.doc,但是spire.doc只能在windows上使用,部署到docker上无法使用,原因是spire.doc使用了库 system.drawing.common
2、 之后使用aspose.words,示例代码如下:
      public static void run()
        {
            document doc = new document(@"d:\testhtml.html");
            doc.save(@"d:\aspose_word.docx");
        }
可以在windows使用,也可以在linux上使用。不过免费版有水印
3、最后找到了一个库叫sautinsoft.document。可以实现功能,可以linux上使用,并且没有水印。示例代码如下
public static void convertfromstream()
        {
            // we need files only for demonstration purposes.
            // the conversion process will be done completely in memory.
            string inpfile = @"d:\testhtml2.html";
            string outfile = @"d:\sautinsoft_word2.docx";
            byte[] inpdata = file.readallbytes(inpfile);
            byte[] outdata = null;
            using (memorystream msinp = new memorystream(inpdata))
            {
                // load a document.
                documentcore dc = documentcore.load(msinp, new sautinsoft.document.htmlloadoptions());
                // save the document to docx format.
                using (memorystream outms = new memorystream())
                {
                    dc.save(outms, new docxsaveoptions());
                    outdata = outms.toarray();
                }
                // show the result for demonstration purposes.
                if (outdata != null)
                {
                    file.writeallbytes(outfile, outdata);
                    system.diagnostics.process.start(new system.diagnostics.processstartinfo(outfile) { useshellexecute = true });
                }
            }
html转doc给前端返回文件的base64示例代码如下:
          byte[] inpdata = file.readallbytes(htmlpath);
                using var msinp = new memorystream(inpdata);
                documentcore dc = documentcore.load(msinp, new sautinsoft.document.htmlloadoptions());
                using memorystream outms = new memorystream();
                dc.save(outms, new docxsaveoptions());
                var outdata = outms.toarray();
                var fileresult = new downfileresult
                {
                    filename = $"word_name.doc",
                    base64str = convert.tobase64string(outdata)
                };
 
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