我正在尝试制作一个将 .exe
文件上传/下载到 FTP
我尝试使用 FtpWebRequest
,但我只能成功上传和下载 .txt 文件。
然后我在这里找到了使用 WebClient
下载的解决方案:
WebClient request = new WebClient();
request.Credentials = new NetworkCredential("username", "password");
byte[] fileData = request.DownloadData("ftp://myFTP.net/");
FileStream file = File.Create(destinatie);
file.Write(fileData, 0, fileData.Length);
file.Close();
这个解决方案有效。但是我看到 WebClient
有一个方法 DownloadFile
没有用。我认为是因为它仅在 HTTP
上不适用于 FTP
。我的假设是真的吗?如果不是,我怎样才能让它工作?
是否有任何其他解决方案可以使用 FtpWebRequest
将 .exe
文件上传/下载到 ftp?
最佳答案
两者都是WebClient.UploadFile
和 WebClient.DownloadFile
FTP 和二进制文件都能正常工作。
上传
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");
如果您需要更好的控制,WebClient
不提供(如 TLS/SSL encryption、ascii/文本传输模式、传输恢复等),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);
}
如果你需要监控上传进度,你必须自己分块复制内容:
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);
}
}
对于 GUI 进度(WinForms ProgressBar
),请参阅:
How can we show progress bar for upload with FtpWebRequest
如果要上传文件夹中的所有文件,请参阅
Recursive upload to FTP server in C# .
下载
WebClient client = new WebClient();
client.Credentials = new NetworkCredential("username", "password");
client.DownloadFile(
"ftp://ftp.example.com/remote/path/file.zip", @"C:\local\path\file.zip");
如果您需要更好的控制,WebClient
不提供(如 TLS/SSL encryption 、ascii/文本传输模式、resuming transfers 等),请使用 FtpWebRequest
.简单的方法是使用 Stream.CopyTo
将 FTP 响应流复制到 FileStream
:
FtpWebRequest request =
(FtpWebRequest)WebRequest.Create("ftp://ftp.example.com/remote/path/file.zip");
request.Credentials = new NetworkCredential("username", "password");
request.Method = WebRequestMethods.Ftp.DownloadFile;
using (Stream ftpStream = request.GetResponse().GetResponseStream())
using (Stream fileStream = File.Create(@"C:\local\path\file.zip"))
{
ftpStream.CopyTo(fileStream);
}
如果你需要监控下载进度,你必须自己分块复制内容:
FtpWebRequest request =
(FtpWebRequest)WebRequest.Create("ftp://ftp.example.com/remote/path/file.zip");
request.Credentials = new NetworkCredential("username", "password");
request.Method = WebRequestMethods.Ftp.DownloadFile;
using (Stream ftpStream = request.GetResponse().GetResponseStream())
using (Stream fileStream = File.Create(@"C:\local\path\file.zip"))
{
byte[] buffer = new byte[10240];
int read;
while ((read = ftpStream.Read(buffer, 0, buffer.Length)) > 0)
{
fileStream.Write(buffer, 0, read);
Console.WriteLine("Downloaded {0} bytes", fileStream.Position);
}
}
对于 GUI 进度(WinForms ProgressBar
),请参阅:
FtpWebRequest FTP download with ProgressBar
如果要从远程文件夹下载所有文件,请参阅
C# Download all files and subdirectories through FTP .
关于c# - 从 FTP 上传文件和下载文件,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/13109823/