我正在使用 System.Net.FtpClient 程序集将文件上传到测试 FTP 站点。当我运行下面的代码时,文件不会出现在远程位置,除非我按照下面的方式使用 Thread.Sleep (我不想使用):
using System;
using System.IO;
using System.Net;
using System.Net.FtpClient;
using System.Security.Cryptography.X509Certificates;
using System.Threading;
namespace FtpsUploadTest
{
/// <summary>
/// The ftp publisher.
/// </summary>
public class FtpPublisher
{
private readonly FtpsSettings _settings;
private readonly IFtpClient _ftpClient;
/// <summary>
/// Initializes a new instance of the <see cref="FtpPublisher"/> class.
/// </summary>
public FtpPublisher()
{
_ftpClient = new FtpClient();
_settings = SettingsReader.GetMySettings();
Init();
}
/// <summary>
/// The publish.
/// </summary>
/// <param name="fileToUpload">
/// The input file path.
/// </param>
public void Publish(string fileToUpload)
{
var remoteFileName = Path.GetFileName(fileToUpload);
Console.WriteLine("FTPS host: {0} remote path: {1}", _settings.FtpsRemoteHost, _settings.FtpsRemotePath);
if (!_ftpClient.IsConnected)
{
_ftpClient.Connect();
}
var fullRemotePath = string.Format("{0}/{1}", _settings.FtpsRemotePath, remoteFileName);
using (var ftpStream = _ftpClient.OpenWrite(fullRemotePath))
using (var inputStream = new FileStream(fileToUpload, FileMode.Open))
{
inputStream.CopyTo(ftpStream);
Thread.Sleep(5000); // <------------------- DOESNT WORK IF REMOVE THIS SLEEP!!
}
Console.WriteLine("File '{0}' published successfully", fileToUpload);
}
private void Init()
{
_ftpClient.Host = _settings.FtpsRemoteHost;
_ftpClient.Port = _settings.FtpsRemotePort;
_ftpClient.DataConnectionConnectTimeout = 60000;
_ftpClient.ConnectTimeout = 60000;
_ftpClient.Credentials = new NetworkCredential(_settings.FtpsUserId, string.Empty);
_ftpClient.DataConnectionType = 0;
if (string.IsNullOrEmpty(_settings.CertFile) || string.IsNullOrEmpty(_settings.CertPassword))
{
return;
}
_ftpClient.ClientCertificates.Add(CreateCertificate(_settings.CertFile, _settings.CertPassword));
_ftpClient.EncryptionMode = (FtpEncryptionMode)2;
_ftpClient.DataConnectionEncryption = true;
}
private X509Certificate CreateCertificate(string certFile, string certPassword)
{
return new X509Certificate(certFile, certPassword, X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.PersistKeySet);
}
}
}
有人知道如何在不使用 Thread.Sleep 的情况下让它工作吗?我尝试过冲洗、关闭流,但这没有帮助。
远程 FTP 服务器的操作与您的代码完全异步。根据服务器的配置,它可能会在使文件可用之前执行扫描病毒或其他簿记等操作。除非您可以直接控制 FTP 服务器,否则您对此无能为力。即使如此,它可能需要一些相当深入的配置更改,甚至不同的软件包。
可能对您有用的一件事是在完成上传后“轮询”文件。创建一个循环来检查文件,等待 1 秒,然后重复,直到找到文件或放弃。如果出现问题,异步/等待模式或来自不同线程的回调可以帮助您消除任何 UI 冻结。
本文内容由网友自发贡献,版权归原作者所有,本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容,请联系:hwhale#tublm.com(使用前将#替换为@)