远程服务器返回错误：(553)文件名不允许[C#] [FTP]
远程服务器返回错误：(553)文件名不允许[C#] [FTP]
提问于 2019-04-23 01:52:32
我正在编写一个将文件从USB复制到FTP服务器的程序，这是代码的一部分：
private const string ftp_url = @"ftp://an_ip_addrs/X";
private static void Upload(string sourceDir)
{
using (WebClient client = new WebClient())
{
try
{
client.Credentials = new NetworkCredential(ftp_username, ftp_psw);
foreach (var filename in Directory.GetFiles(sourceDir))
{
Console.WriteLine("Preparing to upload --> " + filename);
client.UploadFile(ftp_url, WebRequestMethods.Ftp.UploadFile, filename);
Console.WriteLine("File Uploaded!");
}
} catch (Exception e)
{
Console.WriteLine("Err FTP --> " + e);
}
}
}这是Preparing to upload的输出
Preparing to upload --> C:\Users\aimproxy\jn54comu\FASM - Copy (10).PDF实际上，我从try catch block得到了这个错误
"Err FTP --> System.Net.WebException: The remote server returned an error: (553) File name not allowed.
at System.Net.WebClient.UploadFile(Uri address, String method, String fileName)
at System.Net.WebClient.UploadFile(String address, String method, String fileName)
at usb_backdoor_csharp.Program.Upload(String sourceDir) in C:\Users\aimproxy\Desktop\Program.cs:line 29根据请求，这是ftp.exe的输出
Connected to 192.168.1.5.
220 Welcome to virtual FTP service.
503 USER expected.
User (192.168.1.5:(none)): upload
331 Password please.
230 User logged in.
ftp> dir
200 PORT 192.168.1.67:59392 OK
150 BINARY data connection established.
drwxrwxrwx 2 0 0 4096 Apr 22 18:07 X
226 Directory list has been submitted.
ftp: 135 bytes received in 0.02Seconds 7.50Kbytes/sec.回答 1
Stack Overflow用户
回答已采纳
发布于 2019-04-23 03:07:40
问题是WebClient UploadFile需要完整的目标文件路径，即包括目标文件名。您正在传递目标文件夹，并期望它重用源文件名-这是合理的，我很惊讶它不起作用。当然，在IMO文档中没有明确地说明这一点。
正如评论中所讨论的，这对你是有效的：
client.UploadFile(Path.Combine(ftp_url, Path.GetFileName(filename)), filename);我更喜欢网址组合函数，而不是路径组合函数，例如from this old question -类似于：
client.UploadFile(new Uri(new Uri(ftp_url), Path.GetFileName(filename)), filename);页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/55798734
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