使用OpenXml调用AddAlternativeFormatImportPart后损坏文档

我试图在.docx文件中创建一个AddAlternativeFormatImportPart，以便通过AltChunk在文档中引用它。 问题是下面的代码导致docx文件读取为Word损坏，无法打开。

string html = "some html code." string altChunkId = "html234"; var document = WordprocessingDocument.Open(inMemoryPackage, true); var mainPart = document.MainDocumentPart.Document; var mainDocumentPart = document.MainDocumentPart; AlternativeFormatImportPart chunk = mainDocumentPart.AddAlternativeFormatImportPart (AlternativeFormatImportPartType.Xhtml, altChunkId); Stream contentStream = chunk.GetStream(FileMode.Open,FileAccess.ReadWrite); StreamWriter contentWriter = new StreamWriter(contentStream); contentWriter.Write(html); contentWriter.Flush(); { ... } mainPart.Save(); 

Answer 1

我想你可能是如何处理来自AlternativeFormatImportPart的流。 请尝试使用FeedData，如下面的示例所示。

  StringBuilder xhtmlBuilder = new StringBuilder(); xhtmlBuilder.Append(""); xhtmlBuilder.Append(""); xhtmlBuilder.Append("Hello world!"); xhtmlBuilder.Append(""); xhtmlBuilder.Append(""); using (WordprocessingDocument doc = WordprocessingDocument.Open(inputFilePath, true)) { string altChunkId = "chunk1"; AlternativeFormatImportPart chunk = doc.MainDocumentPart.AddAlternativeFormatImportPart (AlternativeFormatImportPartType.Xhtml, altChunkId); using (MemoryStream xhtmlStream = new MemoryStream(System.Text.Encoding.UTF8.GetBytes(xhtmlBuilder.ToString()))) { chunk.FeedData(xhtmlStream); AltChunk altChunk = new AltChunk(); altChunk.Id = altChunkId; doc.MainDocumentPart.Document.Body.Append(altChunk); } doc.MainDocumentPart.Document.Save(); } 

Answer 2

我认为这是因为您无法将AltChunk导入到从内存流中打开的文档中。 我遇到过同样的问题。 我正在从内存流中打开模板，如下所示：

 Private Sub UpdateDoc(templatePath As String) Using fs As FileStream = File.OpenRead(templatePath) Using ms As New MemoryStream CopyStream(fs, ms) Using doc As WordprocessingDocument = WordprocessingDocument.Open(ms, True) 'update the document doc.MainDocumentPart.Document.Save() End Using End Using End Using End Sub Private Sub CopyStream(source As Stream, target As Stream) Dim buffer() As Byte Dim bytesRead As Integer = 1 ReDim buffer(32768) While bytesRead > 0 bytesRead = 0 bytesRead = source.Read(buffer, 0, buffer.Length) target.Write(buffer, 0, bytesRead) End While End Sub 

这适用于内容控件等的正常更新，当流回客户端或保存为docx时，文档很好。 但它在插入AltChunk时会破坏doc。

从物理文件路径打开文档时，在插入AltChunk可以这样工作：

  Using doc As WordprocessingDocument = WordprocessingDocument.Open(strTempFile, True) Dim altChunkId As String = "AltChunkId1" Dim mainDocPart As MainDocumentPart = doc.MainDocumentPart Dim chunk As AlternativeFormatImportPart = mainDocPart.AddAlternativeFormatImportPart(AlternativeFormatImportPartType.Xhtml, altChunkId) Dim strHTML As String = "
Html Heading
This is an html document in a string literal.
" Using chunkStream As Stream = chunk.GetStream(FileMode.Create, FileAccess.Write) Using sr As StreamWriter = New StreamWriter(chunkStream) sr.Write(strHTML) End Using End Using Dim altChunk As New AltChunk altChunk.Id = altChunkId mainDocPart.Document.Body.InsertAfter(altChunk, mainDocPart.Document.Body.Elements(Of Paragraph)().Last()) mainDocPart.Document.Save() End Using 

您似乎无法将AltChunk导入到内存流中，只有在打开物理文件进行写入时才能执行此操作。 谁能解释一下这件事？

Answer 3

我知道这是一个老post，但我有同样的问题。 在文件中使用AltChunk时，它可以工作，但不能在MemoryStream中使用。 如果有人知道这一点会很棒。 这就是我启动WordprocessingDocument的方法

 var byteArrayWithFileFrom360 = ProcessFileHandler.GetFileContent(204735); var wordDocMemoryStream = new MemoryStream(); wordDocMemoryStream.Write(byteArrayWithFileFrom360, 0, byteArrayWithFileFrom360.Length); var myDoc = WordprocessingDocument.Open(wordDocMemoryStream, true);