递归删除给定 FTP 路径中的所有文件和文件夹
本文关键字:文件 文件夹 删除 FTP 路径 递归 | 更新日期: 2023-09-27 18:30:23
我正在尝试创建一个程序,该程序将递归删除给定FTP路径中的所有文件和文件夹。如果给定路径中只有几个文件或目录,我的程序运行良好。但是,出于某种原因,如果一个目录中有多个文件,它只会挂在ReadLine()
行上,最终出现IO错误。这是我的代码:
class Program
{
private const string FtpSite = "myftpsite.com";
private const string FtpUserName = "myusername";
private const string FtpPassword = "mypassword";
static void Main(string[] args)
{
DeleteFilesAndFolders("/");
}
private static void DeleteFilesAndFolders(string path)
{
if (path != null && (path.StartsWith(@"''") || path.StartsWith("//")))
path = path.Remove(0, 1);
List<FileObject> files = DirectoryListing(path);
foreach (FileObject file in files.Where(file => !file.IsDirectory))
{
DeleteFile(path, file.FileName);
}
foreach (FileObject file in files.Where(file => file.IsDirectory))
{
DeleteFilesAndFolders(path + "/" + file.FileName);
DeleteFolder(path + "/" + file.FileName);
}
}
private static void DeleteFile(string path, string file)
{
var clsRequest = (FtpWebRequest)WebRequest.Create("ftp://" + FtpSite + path + "/" + file);
clsRequest.Credentials = new NetworkCredential(FtpUserName, FtpPassword);
clsRequest.Method = WebRequestMethods.Ftp.DeleteFile;
using (var response = (FtpWebResponse) clsRequest.GetResponse())
{
using (Stream datastream = response.GetResponseStream())
{
if (datastream == null)
return;
using (var sr = new StreamReader(datastream))
{
sr.ReadToEnd();
sr.Close();
}
datastream.Close();
response.Close();
}
}
}
private static void DeleteFolder(string path)
{
var clsRequest = (FtpWebRequest)WebRequest.Create("ftp://" + FtpSite + path);
clsRequest.Credentials = new NetworkCredential(FtpUserName, FtpPassword);
clsRequest.Method = WebRequestMethods.Ftp.RemoveDirectory;
using (var response = (FtpWebResponse)clsRequest.GetResponse())
{
using (Stream datastream = response.GetResponseStream())
{
if (datastream == null)
return;
using (var sr = new StreamReader(datastream))
{
sr.ReadToEnd();
sr.Close();
}
datastream.Close();
response.Close();
}
}
}
private static List<FileObject> DirectoryListing(string path)
{
var regex = new Regex(@"^([d-])([rwxt-]{3}){3}'s+'d{1,}'s+.*?('d{1,})'s+('w+'s+'d{1,2}'s+(?:'d{4})?)('d{1,2}:'d{2})?'s+(.+?)'s?$",
RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.IgnoreCase | RegexOptions.IgnorePatternWhitespace);
var request = (FtpWebRequest)WebRequest.Create("ftp://" + FtpSite + path);
request.Credentials = new NetworkCredential(FtpUserName, FtpPassword);
request.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
var result = new List<FileObject>();
using (var response = (FtpWebResponse) request.GetResponse())
{
using (Stream responseStream = response.GetResponseStream())
{
if (responseStream == null)
return null;
using (var reader = new StreamReader(responseStream))
{
while (!reader.EndOfStream)
{
string r = reader.ReadLine();
if (string.IsNullOrWhiteSpace(r))
continue;
var reg = regex.Match(r);
var c = new FileObject
{
FileName = reg.Groups[6].Value,
IsDirectory = reg.Groups[1].Value.ToLower() == "d"
};
result.Add(c);
}
reader.Close();
}
response.Close();
}
}
return result;
}
}
这是我的简单容器FileObject类:
internal class FileObject
{
public bool IsDirectory { get; set; }
public string FileName { get; set; }
}
我的问题似乎通过使用主动模式而不是被动模式来解决。我将其添加到我的代码中:
request.UsePassive = false;
这似乎解决了我的问题。我在大量具有许多子目录和子子目录的文件中对其进行了测试,现在它似乎完美无缺。