問題描述

我需要通過 C# 代碼將一個文件夾(包含子文件夾和文件)從一臺服務(wù)器上傳到另一臺服務(wù)器.我做了一些研究，發(fā)現(xiàn)我們可以使用 FTP 來實(shí)現(xiàn)這一點(diǎn).但是這樣我就只能移動文件而不是整個文件夾.任何幫助在這里表示贊賞.

I would need to upload a folder (which contains sub folders and files) from one server to another from C# code. I have done few research and found that we can achieve this using FTP. But with that I am able to move only files and not the entire folder. Any help here is appreciated.

推薦答案

FtpWebRequest(也不是 .NET 框架中的任何其他 FTP 客戶端)確實(shí)沒有任何明確支持遞歸文件操作(包括上傳).您必須自己實(shí)現(xiàn)遞歸:

The FtpWebRequest (nor any other FTP client in .NET framework) indeed does not have any explicit support for recursive file operations (including uploads). You have to implement the recursion yourself:

• 列出本地目錄
• 迭代條目、上傳文件并遞歸到子目錄(再次列出它們等)

void UploadFtpDirectory(string sourcePath, string url, NetworkCredential credentials)
{
    IEnumerable<string> files = Directory.EnumerateFiles(sourcePath);
    foreach (string file in files)
    {
        using (WebClient client = new WebClient())
        {
            Console.WriteLine($"Uploading {file}");
            client.Credentials = credentials;
            client.UploadFile(url + Path.GetFileName(file), file);
        }
    }

    IEnumerable<string> directories = Directory.EnumerateDirectories(sourcePath);
    foreach (string directory in directories)
    {
        string name = Path.GetFileName(directory);
        string directoryUrl = url + name;

        try
        {
            Console.WriteLine($"Creating {name}");
            FtpWebRequest requestDir = (FtpWebRequest)WebRequest.Create(directoryUrl);
            requestDir.Method = WebRequestMethods.Ftp.MakeDirectory;
            requestDir.Credentials = credentials;
            requestDir.GetResponse().Close();
        }
        catch (WebException ex)
        {
            FtpWebResponse response = (FtpWebResponse)ex.Response;
            if (response.StatusCode == FtpStatusCode.ActionNotTakenFileUnavailable)
            {
                // probably exists already
            }
            else
            {
                throw;
            }
        }

        UploadFtpDirectory(directory, directoryUrl + "/", credentials);
    }
}

有關(guān)創(chuàng)建文件夾的復(fù)雜代碼的背景，請參閱:
如何檢查FTP目錄是否存在

使用如下函數(shù):

string sourcePath = @"C:sourcelocalpath";
// root path must exist
string url = "ftp://ftp.example.com/target/remote/path/";
NetworkCredential credentials = new NetworkCredential("username", "password");

UploadFtpDirectory(sourcePath, url, credentials);

一個更簡單的變體，如果您不需要遞歸上傳:
使用WebClient將文件目錄上傳到FTP服務(wù)器

A simpler variant, if you do not need a recursive upload:
Upload directory of files to FTP server using WebClient

或者使用可以自行進(jìn)行遞歸的 FTP 庫.

Or use FTP library that can do the recursion on its own.

例如，使用 WinSCP .NET 程序集，您只需調(diào)用一次即可上傳整個目錄Session.PutFilesToDirectory:

For example with WinSCP .NET assembly you can upload whole directory with a single call to the Session.PutFilesToDirectory:

// Setup session options
SessionOptions sessionOptions = new SessionOptions
{
    Protocol = Protocol.Ftp,
    HostName = "ftp.example.com",
    UserName = "username",
    Password = "password",
};

using (Session session = new Session())
{
    // Connect
    session.Open(sessionOptions);

    // Download files
    session.PutFilesToDirectory(@"C:sourcelocalpath", "/target/remote/path").Check();
}

Session.PutFilesToDirectory 方法默認(rèn)是遞歸的.

The Session.PutFilesToDirectory method is recursive by default.

(我是 WinSCP 的作者)

這篇關(guān)于在 C# 中遞歸上傳到 FTP 服務(wù)器的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網(wǎng)！