FtpWebRequest ListDirectory不会返回所有文件

本文介绍了FtpWebRequest ListDirectory不会返回所有文件的处理方法，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

我试图从一个拥有大约9000个文件的FTP位置检索文件列表。

但是下面的代码总是只给出97个文件。在第98个文件的循环开始处， StreamReader.Peek（）变为-1

输出test.txt总是只有前97个文件，因为FTP响应本身只包含97个文件。

欣赏任何帮助。

requestList =（FtpWebRequest）WebRequest.Create（xxx）; requestList.Credentials = new NetworkCredential（xx，xx）; requestList.Method = WebRequestMethods.Ftp.ListDirectoryDe​​tails; responseList =（FtpWebResponse）requestList.GetResponse（）; responseListStream = responseList.GetResponseStream（）; listReader = new StreamReader（responseListStream）; using（StreamWriter w = new StreamWriter（test.txt）） { while（listReader.Peek（）> = 0） { w.WriteLine（listReader.ReadLine（））; } w.Close（）;

解决方案 Peek（）条件是错误的。它会打破你的循环，只要暂时没有数据准备好阅读。

使用此代码：

字符串行; while（！string.IsNullOrEmpty（line = listReader.ReadLine（））） { w.WriteLine（line）; }

虽然如果您只需复制流，请使用：

w.Write（listReader.ReadToEnd（））;

甚至更好（更高效）： }

I am trying to retrieve the list of files from a FTP location which has about 9000 files.

But the following code always gives only 97 files. In the beginning of the loop for the 98th file, the StreamReader.Peek() turns to -1

The output "test.txt" always has only the first 97 files, as in, the FTP response itself contains only 97 files.

Appreciate any help.

requestList = (FtpWebRequest)WebRequest.Create("xxx"); requestList.Credentials = new NetworkCredential("xx", "xx"); requestList.Method = WebRequestMethods.Ftp.ListDirectoryDetails; responseList = (FtpWebResponse)requestList.GetResponse(); responseListStream = responseList.GetResponseStream(); listReader = new StreamReader(responseListStream); using (StreamWriter w = new StreamWriter("test.txt")) { while (listReader.Peek() >= 0) { w.WriteLine(listReader.ReadLine()); } w.Close(); }

解决方案

The Peek() condition is wrong. It breaks your loop whenever there's momentarily no data ready for reading.

Use this code:

string line; while (!string.IsNullOrEmpty(line = listReader.ReadLine())) { w.WriteLine(line); }

Though if you just need to copy the stream, use this:

w.Write(listReader.ReadToEnd());

Or even better (more efficient):

using (Stream fileStream = File.Create("test.txt")) { responseListStream.CopyTo(fileStream); }