在c#中将多个文件上载到FTP

本文关键字：文件 上载 FTP | 更新日期: 2024-06-14 07:02:52

我使用以下方法将文件从本地服务器上传到FTP服务器，在这里我创建一个新连接，并启动一个新会话，每个文件上传和关闭都是一样的。如何在c中的单启动会话中实现这一点。

这是我的代码

public bool UploadTempFilesToFTP()
    {
        string[] fileList;
        try
        {
            ConfiguredValues conObj = new ConfiguredValues();
            conObj.PickTheValuesFromConfigFile();
            fileList = Directory.GetFiles(conObj.tempPath);
            foreach (string FileName in fileList)
            {
                FtpWebRequest upldrequest = (FtpWebRequest)FtpWebRequest.Create(conObj.tempOutboundURL + FileName);

                upldrequest.UseBinary = true;
                upldrequest.KeepAlive = false;
                upldrequest.Timeout = -1;
                upldrequest.UsePassive = true;
                upldrequest.Credentials = new NetworkCredential(conObj.user, conObj.pass);
                upldrequest.Method = WebRequestMethods.Ftp.UploadFile;
                string destinationAddress = conObj.tempPath;
                FileStream fs = File.OpenRead(destinationAddress + FileName);
                byte[] buffer = new byte[fs.Length];
                fs.Read(buffer, 0, buffer.Length);
                fs.Close();
                Stream requestStr = upldrequest.GetRequestStream();
                requestStr.Write(buffer, 0, buffer.Length);
                requestStr.Close();
                requestStr.Flush();
                FtpWebResponse response = (FtpWebResponse)upldrequest.GetResponse();
                response.Close();
                File.Delete(destinationAddress + FileName);
            }
            Console.WriteLine("Uploaded Successfully to Temp folder");
            return true;
        }
        catch (Exception ex)
        {
            Console.WriteLine("Upload failed. {0}", ex.Message);
            return false;
        }
    }

在c#中将多个文件上载到FTP

奇怪的是，我回答了一个老问题，但我几乎尝试了所有的方法将多个文件上传到ftp，但没有成功，而解决方案非常简单有效，使用LOOPING-foreach为我解决了问题我使用下面的函数在一个简单的步骤中上传文件。。

public void Uploadbulkftpfiles(string[] list)
    {
        bool ife;// is folder exists
        try
        {
            FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://ftpsite.com/folder");
            request.Credentials = new NetworkCredential("Username", "Password");
            request.Method = WebRequestMethods.Ftp.ListDirectory;
            FtpWebResponse response = (FtpWebResponse)request.GetResponse();
            ife = true;
        }
        catch (Exception)
        {
            ife = false;
        }
        /////////////////////////////////////////////begin of upload process
        
        if (ife)//the folder is already exists
        {
            foreach (var str in list)
            {
                try
                {
                    FtpWebRequest requestUP2 = (FtpWebRequest)WebRequest.Create("ftp://ftpsite.com/folder" + str);
                    requestUP2.Credentials = new NetworkCredential("UserName", "Password");
                    requestUP2.Method = WebRequestMethods.Ftp.UploadFile;
                    requestUP2.KeepAlive = false;
                    requestUP2.UsePassive = true;
                    using (Stream fileStream = File.OpenRead("ftp://ftpsite.com/folder" + str))
                    using (Stream ftpStream = requestUP2.GetRequestStream())
                    {
                        fileStream.CopyTo(ftpStream);
                    }
                }
                catch (Exception ex1)
                {
                    
                    MessageBox.Show(ex1.Message);
                }
                
            }
        }
        else if (!ife)
        {
            //CREATE THE FOLDER
            try
            {
                FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp:ftpsite/folder");
                request.Credentials = new NetworkCredential("UserName", "Password");
                request.Method = WebRequestMethods.Ftp.MakeDirectory;
                FtpWebResponse response = (FtpWebResponse)request.GetResponse();
            }
            catch (Exception excr) { MessageBox.Show(excr.Message); }
            
            
            //UPLOAD THE FILES
            foreach (var str in list)
            {
                try
                {
                    FtpWebRequest requestUP2 = (FtpWebRequest)WebRequest.Create("ftp://ftpsite.com/folder" + str);
                    requestUP2.Credentials = new NetworkCredential("UserName", "Password");
                    requestUP2.Method = WebRequestMethods.Ftp.UploadFile;
                    requestUP2.KeepAlive = false;
                    requestUP2.UsePassive = true;
                    using (Stream fileStream = File.OpenRead("ftp://ftpsite.com/folder" + str))
                    using (Stream ftpStream = requestUP2.GetRequestStream())
                    {
                        fileStream.CopyTo(ftpStream);
                    }
                }
                catch (Exception ex1)
                {
                    
                    MessageBox.Show(ex1.Message);
                }
                
            }
        }
    }

ftp协议旨在根据请求工作。

您使用一个方法（在您的案例中为UploadFile）启动一个请求。

你唯一能做的就是保持你的请求，以避免连接关闭

upldrequest.KeepAlive = true;

除了最后一个请求之外，您创建的每一个请求。这将使登录仅成为第一个FTPWebRequest。

然后，当您创建最后一个FTPWebRequest时，设置

upldrequest.KeepAlive = false;

完成后，它将关闭连接。

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