使用 C# 将可流式内存中文档 (.docx) 上传到 FTP?

编程入门行业动态更新时间:2024-10-22 21:29:50

本文介绍了使用 C# 将可流式内存中文档 (.docx) 上传到 FTP?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！问题描述

我正在尝试将 MemoryStream 中的 .docx 文件上传到 FTP

I am trying to upload a .docx file which is in MemoryStream to FTP

但上传完成后，文件为空.

But when upload is completed, the file is empty.

MemoryStream mms = new MemoryStream(); document2.SaveToStream(mms, Spire.Doc.FileFormat.Docx); string ftpAddress = "example"; string username = "example"; string password = "example"; using (StreamReader stream = new StreamReader(mms)) { // adnu is a random file name. WebRequest request = WebRequest.Create("ftp://" + ftpAddress + "/public_html/b/" + adnu + ".docx"); request.Method = WebRequestMethods.Ftp.UploadFile; request.Credentials = new NetworkCredential(username, password); Stream reqStream = request.GetRequestStream(); reqStream.Close(); }

推荐答案

直接将文档写入请求流.使用中间 MemoryStream 没有意义.StreamReader/StreamWriter 用于处理文本文件，而 .docx 是二进制文件格式，因此也不要使用它们.

Write the document directly to the request stream. There's no point using an intermediate MemoryStream. And StreamReader/StreamWriter are for working with text files, while a .docx is a binary file format, so do not use those either.

WebRequest request = WebRequest.Create("ftp://ftp.example/remote/path/document.docx"); request.Method = WebRequestMethods.Ftp.UploadFile; request.Credentials = new NetworkCredential(username, password); using (Stream ftpStream = request.GetRequestStream()) { document2.SaveToStream(ftpStream, Spire.Doc.FileFormat.Docx); }

或使用 WebClient.OpenWrite:

using (var webClient = new WebClient()) { const string url = "ftp://ftp.example/remote/path/document.docx"; using (Stream uploadStream = client.OpenWrite(url)) { document2.SaveToStream(uploadStream, Spire.Doc.FileFormat.Docx); } }

你只需要一个中间MemoryStream，如果Spire库需要一个可搜索的流，FtpWebRequest.GetRequestStream返回的Stream是什么不是.我无法测试.

You will only need an intermediate MemoryStream, if the Spire library requires a seekable stream, what the Stream returned by FtpWebRequest.GetRequestStream is not. I cannot test that.

如果是这样，请使用:

MemoryStream memoryStream = new MemoryStream(); document2.SaveToStream(memoryStream, Spire.Doc.FileFormat.Docx); memoryStream.Seek(0, SeekOrigin.Begin); WebRequest request = WebRequest.Create("ftp://ftp.example/remote/path/document.docx"); request.Method = WebRequestMethods.Ftp.UploadFile; request.Credentials = new NetworkCredential(username, password); using (Stream ftpStream = request.GetRequestStream()) { memoryStream.CopyTo(ftpStream); }