Question

我已经构建了一个ActionResult来将数据输出到Word文档。我在编译或运行时没有错误，但在尝试打开文件时，我收到消息：'我们很抱歉，我们无法打开filename.docx，因为我们发现其内容有问题。'。

这是我正在尝试做的事情：

public override void ExecuteResult(ControllerContext context)
{
    //Create a response stream to create and write the Excel file
    HttpContext curContext = HttpContext.Current;
    curContext.Response.Clear();
    curContext.Response.AddHeader("content-disposition", "attachment;filename=text.docx");
    curContext.Response.Charset = "";
    curContext.Response.Cache.SetCacheability(HttpCacheability.NoCache);
    curContext.Response.ContentType = "application/vnd.ms-word";

    //Write the stream back to the response
    var ms = new MemoryStream();

    var repData = "<b>Mark's Test Book: With a Special Sub Title</b><br /><br /><b>Chapter: Chapter Title 1: Chapter Title sub</b><br /><br />";

    Document.CreateAndAddHtmlToWordprocessingStream(ms, repData);

    curContext.Response.OutputStream.Write(ms.GetBuffer(), 0, ms.GetBuffer().Length);

    curContext.Response.End();

}

静态方法如下：

public static void CreateAndAddHtmlToWordprocessingStream(Stream stream, string inputBody)
{
    // Open a WordProcessingDocument based on a stream.
    WordprocessingDocument wordprocessingDocument =
        WordprocessingDocument.Create(stream, WordprocessingDocumentType.Document);

    // Add a main document part. 
    MainDocumentPart mainPart = wordprocessingDocument.AddMainDocumentPart();

    // Create the document structure.
    mainPart.Document = new DocumentFormat.OpenXml.Wordprocessing.Document();

    // Create the document body.
    mainPart.Document.AppendChild(new Body());

    var ms = new MemoryStream(System.Text.Encoding.Default.GetBytes("<html><head></head><body style=\"font-family:'Calibri';\">" + inputBody + "</body></html>"));

    var altChunkId = "id";
    var formatImportPart = mainPart.AddAlternativeFormatImportPart(AlternativeFormatImportPartType.Html, altChunkId);

    formatImportPart.FeedData(ms);

    var altChunk = new AltChunk { Id = altChunkId };

    mainPart.Document.Body.Append(altChunk);

    mainPart.Document.Save();

    // Close the document handle.
    wordprocessingDocument.Close();

    // Caller must close the stream.
}

我看过这两篇文章，但没有找到任何帮助：

C# return memory stream from OpenXML resulting to a corrupted word file

Streaming In Memory Word Document using OpenXML SDK w/ASP.NET results in "corrupt" document

Answer 1

ms.GetBuffer()将返回自动管理和调整大小的缓冲区。这将从您编写的数据开始，但在您继续\0的情况下，最后可能包含额外的.Write()个字节。

要返回MemoryStream，您可以使用以下任一方法：

ms.Position = 0;
ms.CopyTo(curContext.Response.OutputStream);

或：

var msResult = ms.ToArray();
curContext.Response.OutputStream.Write(msResult, 0, msResult.Length);

Answer 2

你可以创建一个像这样的方法来处理内存流和文件名格式

private static void DynaGenWordDoc(string fileName, Page page, WordprocessingDocument wdoc)
{
    page.Response.ClearContent();
    page.Response.ClearHeaders();
    page.Response.ContentType = "application/vnd.ms-word";
    page.Response.AppendHeader("Content-Disposition", string.Format("attachment;filename={0}.docx", fileName));

    using (MemoryStream memoryStream = new MemoryStream())
    {
        wdoc.SaveAs(memoryStream);
        memoryStream.WriteTo(page.Response.OutputStream);
        memoryStream.Close();
    }
    page.Response.Flush();
    page.Response.End();
}

试图用OpenXml创建一个内存Word Doc，说它已经腐败了

2 个答案: