我尝试使用C＃将文件上传到FTP服务器。 文件已上传，但字节为零。
private void button2_Click(object sender, EventArgs e)
{
var dirPath = @"C:/Documents and Settings/sander.GD/Bureaublad/test/";
ftp ftpClient = new ftp("ftp://example.com/", "username", "password");
string[] files = Directory.GetFiles(dirPath,"*.*");
var uploadPath = "/httpdocs/album";
foreach (string file in files)
{
ftpClient.createDirectory("/test");
ftpClient.upload(uploadPath + "/" + Path.GetFileName(file), file);
}
if (string.IsNullOrEmpty(txtnaam.Text))
{
MessageBox.Show("Gelieve uw naam in te geven !");
}
}
现有的答案是有效的，但是为什么要重新发明轮子，并且在WebClient已经很好地实现FTP上传的同时又打扰较低级别的WebRequest类型：
using (var client = new WebClient())
{
client.Credentials = new NetworkCredential(ftpUsername, ftpPassword);
client.UploadFile("ftp://host/path.zip", WebRequestMethods.Ftp.UploadFile, localFile);
}
public void UploadFtpFile(string folderName, string fileName)
{
FtpWebRequest request;
string folderName;
string fileName;
string absoluteFileName = Path.GetFileName(fileName);
request = WebRequest.Create(new Uri(string.Format(@"ftp://{0}/{1}/{2}", "127.0.0.1", folderName, absoluteFileName))) as FtpWebRequest;
request.Method = WebRequestMethods.Ftp.UploadFile;
request.UseBinary = 1;
request.UsePassive = 1;
request.KeepAlive = 1;
request.Credentials = new NetworkCredential(user, pass);
request.ConnectionGroupName = "group";
using (FileStream fs = File.OpenRead(fileName))
{
byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
fs.Close();
Stream requestStream = request.GetRequestStream();
requestStream.Write(buffer, 0, buffer.Length);
requestStream.Flush();
requestStream.Close();
}
}
如何使用
UploadFtpFile("testFolder", "E:\\filesToUpload\\test.img");
在你的foreach中使用它
而且您只需要创建一次文件夹
创建一个文件夹
request = WebRequest.Create(new Uri(string.Format(@"ftp://{0}/{1}/", "127.0.0.1", "testFolder"))) as FtpWebRequest;
request.Method = WebRequestMethods.Ftp.MakeDirectory;
FtpWebResponse ftpResponse = (FtpWebResponse)request.GetResponse();
使用.NET框架将文件上传到FTP服务器的最简单的方法是使用WebClient.UploadFile方法 ：
WebClient client = new WebClient();
client.Credentials = new NetworkCredential("username", "password");
client.UploadFile("ftp://ftp.example.com/remote/path/file.zip", @"C:\local\path\file.zip");
如果需要更大的控制权（ WebClient不提供）（如TLS / SSL加密 ，ASCII模式，活动模式等），请使用FtpWebRequest 。 简单的方法是使用Stream.CopyTo将FileStream复制到FTP流：
FtpWebRequest request =
(FtpWebRequest)WebRequest.Create("ftp://ftp.example.com/remote/path/file.zip");
request.Credentials = new NetworkCredential("username", "password");
request.Method = WebRequestMethods.Ftp.UploadFile;
using (Stream fileStream = File.OpenRead(@"C:\local\path\file.zip"))
using (Stream ftpStream = request.GetRequestStream())
{
fileStream.CopyTo(ftpStream);
}
如果需要监视上传进度，则必须自己逐块复制内容：
FtpWebRequest request =
(FtpWebRequest)WebRequest.Create("ftp://ftp.example.com/remote/path/file.zip");
request.Credentials = new NetworkCredential("username", "password");
request.Method = WebRequestMethods.Ftp.UploadFile;
using (Stream fileStream = File.OpenRead(@"C:\local\path\file.zip"))
using (Stream ftpStream = request.GetRequestStream())
{
byte[] buffer = new byte[10240];
int read;
while ((read = fileStream.Read(buffer, 0, buffer.Length)) > 0)
{
ftpStream.Write(buffer, 0, read);
Console.WriteLine("Uploaded {0} bytes", fileStream.Position);
}
}
有关GUI进度（WinForms ProgressBar ），请参见以下C＃示例：
我们如何显示使用FtpWebRequest上传的进度条
如果要从文件夹上载所有文件，请参见
使用WebClient上传文件目录 。
以下对我有用：
public virtual void Send(string fileName, byte[] file)
{
ByteArrayToFile(fileName, file);
var request = (FtpWebRequest) WebRequest.Create(new Uri(ServerUrl + fileName));
request.Method = WebRequestMethods.Ftp.UploadFile;
request.UsePassive = false;
request.Credentials = new NetworkCredential(UserName, Password);
request.ContentLength = file.Length;
var requestStream = request.GetRequestStream();
requestStream.Write(file, 0, file.Length);
requestStream.Close();
var response = (FtpWebResponse) request.GetResponse();
if (response != null)
response.Close();
}
您无法读取代码中的send file参数，因为它只是文件名。
使用以下内容：
byte[] bytes = File.ReadAllBytes(dir + file);
要获取文件，可以将其传递给Send方法。
public static void UploadFileToFtp(string url, string filePath, string username, string password)
{
var fileName = Path.GetFileName(filePath);
var request = (FtpWebRequest)WebRequest.Create(url + fileName);
request.Method = WebRequestMethods.Ftp.UploadFile;
request.Credentials = new NetworkCredential(username, password);
request.UsePassive = true;
request.UseBinary = true;
request.KeepAlive = false;
using (var fileStream = File.OpenRead(filePath))
{
using (var requestStream = request.GetRequestStream())
{
fileStream.CopyTo(requestStream);
requestStream.Close();
}
}
var response = (FtpWebResponse)request.GetResponse();
Console.WriteLine("Upload done: {0}", response.StatusDescription);
response.Close();
}
在第一个示例中，必须将其更改为：
requestStream.Flush();
requestStream.Close();
首先冲洗，然后关闭。
这对我有用，此方法会将SFTP文件传输到网络中的某个位置。 它使用SSH.NET.2013.4.7库，一个人可以免费下载它。
//Secure FTP
public void SecureFTPUploadFile(string destinationHost,int port,string username,string password,string source,string destination)
{
ConnectionInfo ConnNfo = new ConnectionInfo(destinationHost, port, username, new PasswordAuthenticationMethod(username, password));
var temp = destination.Split('/');
string destinationFileName = temp[temp.Count() - 1];
string parentDirectory = destination.Remove(destination.Length - (destinationFileName.Length + 1), destinationFileName.Length + 1);
using (var sshclient = new SshClient(ConnNfo))
{
sshclient.Connect();
using (var cmd = sshclient.CreateCommand("mkdir -p " + parentDirectory + " && chmod +rw " + parentDirectory))
{
cmd.Execute();
}
sshclient.Disconnect();
}
using (var sftp = new SftpClient(ConnNfo))
{
sftp.Connect();
sftp.ChangeDirectory(parentDirectory);
using (var uplfileStream = System.IO.File.OpenRead(source))
{
sftp.UploadFile(uplfileStream, destinationFileName, true);
}
sftp.Disconnect();
}
}
发布日期：06/26/2018
https://docs.microsoft.com/zh-cn/dotnet/framework/network-programming/how-to-upload-files-with-ftp
using System;
using System.IO;
using System.Net;
using System.Text;
namespace Examples.System.Net
{
public class WebRequestGetExample
{
public static void Main ()
{
// Get the object used to communicate with the server.
FtpWebRequest request =
(FtpWebRequest)WebRequest.Create("ftp://www.contoso.com/test.htm");
request.Method = WebRequestMethods.Ftp.UploadFile;
// This example assumes the FTP site uses anonymous logon.
request.Credentials = new NetworkCredential("anonymous",
"[email protected]");
// Copy the contents of the file to the request stream.
byte[] fileContents;
using (StreamReader sourceStream = new StreamReader("testfile.txt"))
{
fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd());
}
request.ContentLength = fileContents.Length;
using (Stream requestStream = request.GetRequestStream())
{
requestStream.Write(fileContents, 0, fileContents.Length);
}
using (FtpWebResponse response = (FtpWebResponse)request.GetResponse())
{
Console.WriteLine($"Upload File Complete, status
{response.StatusDescription}");
}
}
}
}
我观察到-
我已经准备了一种像这样工作的方法，您可以使用参数TargetDestinationPath替换变量ftpurl的值。 我已经在winforms应用程序上测试了此方法：
private void UploadProfileImage(string TargetFileName, string TargetDestinationPath, string FiletoUpload)
{
//Get the Image Destination path
string imageName = TargetFileName; //you can comment this
string imgPath = TargetDestinationPath;
string ftpurl = "ftp://downloads.abc.com/downloads.abc.com/MobileApps/SystemImages/ProfileImages/" + imgPath;
string ftpusername = krayknot_DAL.clsGlobal.FTPUsername;
string ftppassword = krayknot_DAL.clsGlobal.FTPPassword;
string fileurl = FiletoUpload;
FtpWebRequest ftpClient = (FtpWebRequest)FtpWebRequest.Create(ftpurl);
ftpClient.Credentials = new System.Net.NetworkCredential(ftpusername, ftppassword);
ftpClient.Method = System.Net.WebRequestMethods.Ftp.UploadFile;
ftpClient.UseBinary = true;
ftpClient.KeepAlive = true;
System.IO.FileInfo fi = new System.IO.FileInfo(fileurl);
ftpClient.ContentLength = fi.Length;
byte[] buffer = new byte[4097];
int bytes = 0;
int total_bytes = (int)fi.Length;
System.IO.FileStream fs = fi.OpenRead();
System.IO.Stream rs = ftpClient.GetRequestStream();
while (total_bytes > 0)
{
bytes = fs.Read(buffer, 0, buffer.Length);
rs.Write(buffer, 0, bytes);
total_bytes = total_bytes - bytes;
}
//fs.Flush();
fs.Close();
rs.Close();
FtpWebResponse uploadResponse = (FtpWebResponse)ftpClient.GetResponse();
string value = uploadResponse.StatusDescription;
uploadResponse.Close();
}
如有任何问题，请告诉我，或者这里还有一个链接可以为您提供帮助：
https://msdn.microsoft.com/zh-CN/library/ms229715(v=vs.110).aspx