流在内存Word文档使用的OpenXML SDK瓦特/ ASP.NET结果＆QUOT;腐败＆QUOT;文件 [英] Streaming In Memory Word Document using OpenXML SDK w/ASP.NET results in "corrupt" document

问题描述

我不能流，我创建一个Word文档中飞落到浏览器。我经常收到从Microsoft Word一条消息，该文件已损坏。

I am unable to stream a word document that I create on the fly down to the browser. I am constantly getting a message from Microsoft Word that the document is corrupt.

当我通过一个控制台应用程序运行code，采取ASP.NET出来的图片，文档正确，没有任何问题产生。我相信一切围绕中心，写入文件了。

When I run the code via a Console Application and take ASP.NET out of the picture, the document is generated correctly with no problems. I believe everything centers around writing the file down.

下面是我的code：

using (MemoryStream mem = new MemoryStream())
            {
                // Create Document
                using (WordprocessingDocument wordDocument = WordprocessingDocument.Create(mem, 
          WordprocessingDocumentType.Document, true))
                {
                    // Add a main document part. 
                    MainDocumentPart mainPart = wordDocument.AddMainDocumentPart();

                    new Document(new Body()).Save(mainPart);

                    Body body = mainPart.Document.Body;
                    body.Append(new Paragraph(
                                new Run(
                                    new Text("Hello World!"))));

                    mainPart.Document.Save();
                    // Stream it down to the browser

                    // THIS IS PROBABLY THE CRUX OF THE MATTER <---
                    Response.AppendHeader("Content-Disposition", "attachment;filename=HelloWorld.docx");
                    Response.ContentType = "application/vnd.ms-word.document";
                    mem.WriteTo(Response.OutputStream);
                    Response.End();
                }

            }

我有看着在大量的<一href="http://stackoverflow.com/questions/2477564/why-are-docx-files-being-corrupted-when-downloading-from-an-asp-net-page">links - 但没有相当的工作。我很多人使用MemoryStream.WriteTo和一些使用的BinaryWrite - 在这一点上我不知道正确的方法是什么。此外，我已经试过了较长的内容类型，即应用程序/ vnd.openxmlformats-officedocument.wordpro​​cessingml.document，但没有运气。

I have looked at a lot of links - but nothing quite works. I lot of people use MemoryStream.WriteTo and some use BinaryWrite - at this point I'm not sure what the correct way is. Also I've tried the longer content type, i.e. application/vnd.openxmlformats-officedocument.wordprocessingml.document but no luck.

一些截图 - 即使你试图恢复你得到相同的部分缺失或无效

Some screenshots - even if you try to recover you get the same "parts are missing or invalid"

解决方案为那些谁无意中发现了这个问题：

在使用（）。本WordProcessingDocument的指令，则必须调用：

Within the using().. directive of the WordProcessingDocument, you must call:

wordDocument.Save（）;

wordDocument.Save();

另外要正确流将MemoryStream，使用了基于块外的：

Also to correctly stream the MemoryStream, use this in the outer using block:

Response.ContentType = "application/vnd.openxmlformats-officedocument.wordprocessingml.document";
                Response.AppendHeader("Content-Disposition", "attachment;filename=HelloWorld.docx");
                mem.Position = 0;
                mem.CopyTo(Response.OutputStream);
                Response.Flush();
                Response.End();

推荐答案

使用 CopyTo从取而代之的是在一个错误的writeTo 这使得它无法写入缓冲区的全部内容时，目标流不支持写入一切一气呵成。

Use CopyTo instead, there is a bug in WriteTo which makes it fail to write the entire content of the buffer when the target stream does not support writing everything in one go.

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