我试图通过C#中的FtpWebRequest类来实现ftp/sftp,但直到现在还没有成功.
我不想使用任何第三方免费或付费的dll.
凭证就像
我能够使用IP地址实现ftp,但无法使用凭据获取上述主机名的sftp.
对于sftp,我已将FtpWebRequest类的EnableSsl属性设置为true,但是错误无法连接到远程服务器.
我能够使用相同的凭据和主机名与Filezilla连接,但不能通过代码连接.
我观察了filezilla,它将主机名从sftp.xyz.com更改为文本框中的sftp://sftp.xyz.com,在命令行中将用户标识更改为abc@sftp.xyz.com
我在代码中做了同样的事情,但sftp没有成功.
请急需帮助.提前致谢.
以下是我目前的代码:
private static void ProcessSFTPFile()
{
try
{
string[] fileList = null;
StringBuilder result = new StringBuilder();
string uri = "ftp://sftp.xyz.com";
FtpWebRequest ftpRequest = (FtpWebRequest)WebRequest.Create(new Uri(uri));
ftpRequest.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
ftpRequest.EnableSsl = true;
ftpRequest.Credentials = new NetworkCredential("abc@sftp.xyz.com", "123");
ftpRequest.UsePassive = true;
ftpRequest.Timeout = System.Threading.Timeout.Infinite;
//ftpRequest.AuthenticationLevel = Security.AuthenticationLevel.MutualAuthRequested;
//ftpRequest.Proxy = null;
ftpRequest.KeepAlive = true;
ftpRequest.UseBinary = true;
//Hook a callback to verify the remote certificate
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(ValidateServerCertificate);
//ServicePointManager.ServerCertificateValidationCallback = ((sender, certificate, chain, sslPolicyErrors) => true);
FtpWebResponse response = (FtpWebResponse)ftpRequest.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream());
string line = reader.ReadLine();
while (line != null)
{
result.Append("ftp://sftp.xyz.com" + line);
result.Append("\n");
line = reader.ReadLine();
}
if (result.Length != 0)
{
// to remove the trailing '\n'
result.Remove(result.ToString().LastIndexOf('\n'), 1);
// extracting the array of all ftp file paths
fileList = result.ToString().Split('\n');
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message.ToString());
Console.ReadLine();
}
}
public static bool ValidateServerCertificate(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
{
if (certificate.Subject.Contains("CN=sftp.xyz.com"))
{
return true;
}
else
{
return false;
}
}
use*_*426 12
如果使用BizTalk,则可以使用ESB Toolkit使用SFTP适配器.它自2010年以来一直得到支持.人们不禁要问为什么它没有成功.Net Framework
-
不幸的是,目前只需要与框架有很多工作要做.放置sftp协议前缀是不够的,make-it-work今天仍然没有内置的.Net Framework支持,可能在未来.
-------------------------------------------------- -------
1)一个很好的图书馆可以试用SSHNet.
-------------------------------------------------- -------
它有:
文档中的示例代码:
列表目录
/// <summary>
/// This sample will list the contents of the current directory.
/// </summary>
public void ListDirectory()
{
string host = "";
string username = "";
string password = "";
string remoteDirectory = "."; // . always refers to the current directory.
using (var sftp = new SftpClient(host, username, password))
{
sftp.Connect();
var files = sftp.ListDirectory(remoteDirectory);
foreach (var file in files)
{
Console.WriteLine(file.FullName);
}
}
}
上传文件
/// <summary>
/// This sample will upload a file on your local machine to the remote system.
/// </summary>
public void UploadFile()
{
string host = "";
string username = "";
string password = "";
string localFileName = "";
string remoteFileName = System.IO.Path.GetFileName(localFile);
using (var sftp = new SftpClient(host, username, password))
{
sftp.Connect();
using (var file = File.OpenRead(localFileName))
{
sftp.UploadFile(remoteFileName, file);
}
sftp.Disconnect();
}
}
下载文件
/// <summary>
/// This sample will download a file on the remote system to your local machine.
/// </summary>
public void DownloadFile()
{
string host = "";
string username = "";
string password = "";
string localFileName = System.IO.Path.GetFileName(localFile);
string remoteFileName = "";
using (var sftp = new SftpClient(host, username, password))
{
sftp.Connect();
using (var file = File.OpenWrite(localFileName))
{
sftp.DownloadFile(remoteFileName, file);
}
sftp.Disconnect();
}
}
-------------------------------------------------- -------
2)另一个替代库是WinSCP
-------------------------------------------------- -------
以下为例:
using System;
using WinSCP;
class Example
{
public static int Main()
{
try
{
// Setup session options
SessionOptions sessionOptions = new SessionOptions
{
Protocol = Protocol.Sftp,
HostName = "example.com",
UserName = "user",
Password = "mypassword",
SshHostKeyFingerprint = "ssh-rsa 2048 xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx"
};
using (Session session = new Session())
{
// Connect
session.Open(sessionOptions);
// Upload files
TransferOptions transferOptions = new TransferOptions();
transferOptions.TransferMode = TransferMode.Binary;
TransferOperationResult transferResult;
transferResult = session.PutFiles(@"d:\toupload\*", "/home/user/", false, transferOptions);
// Throw on any error
transferResult.Check();
// Print results
foreach (TransferEventArgs transfer in transferResult.Transfers)
{
Console.WriteLine("Upload of {0} succeeded", transfer.FileName);
}
}
return 0;
}
catch (Exception e)
{
Console.WriteLine("Error: {0}", e);
return 1;
}
}
}
同意 Tejs。只是为了澄清：
带有 EnableSsl = true 的 FtpWebRequest 表示它是 ftps，显式模式，或者在 Filezilla 中：“FTPES - FTP over Explicit TLS/SSL，默认端口 21”。你可以用内置的 .net 东西来做到这一点。
对于隐式 ftps（在 Filezilla 中，“FTPS - FTP over Implicit TLS/SSL，默认端口 990”）您必须使用第 3 方（例如 ftps.codeplex.com）。
对于 sftp（在 Filezilla 中，“SSH 文件传输协议，默认端口 22”）您还必须使用 3rd 方（例如 sshnet.codeplex.com）。
正如 Joachim Isaksson 所说，如果你不能使用 3rd 方，你必须自己实现它。