问题描述

我正在编写一个使用带有凭据的 ftp 服务器的程序.我正在尝试从服务器检索目录列表，但是当我到达线路时:

I'm writing a program that uses an ftp server with credentials. I'm trying to retrieve the directory list from the server but when I get to the line:

string line = reader.ReadLine();

我得到的字符串只包含:无法打开"host:/lib1"."

the string that I get contains only : "Can't open "host:/lib1"."

如果我尝试获取另一行，则会引发下一个异常:远程服务器返回错误:(550) 文件不可用(例如，找不到文件，无法访问).

If I try to get another line, the next exception is thrown: The remote server returned an error: (550) File unavailable (e.g., file not found, no access).

我确信(使用另一个 ftp 应用程序)'lib1' 目录存在于 ftp 服务器上，并且我的凭据(用户名和密码)是正确的.

I know for sure (using another ftp application) that 'lib1' directory exists on the ftp server and my credentials (username and password) are correct.

这是我的代码:

 public class FTPClient
{
    public string UserName { get; set; }
    public string Password { get; set; }
    public string IpAddress { get; set; }
    public int Port { get; set; }

    public FTPClient(string _userName, string _password, string _address, int _port)
    {
        UserName = _userName;
        Password = _password;
        IpAddress = _address;
        Port = _port;
    }

    public void GetDirectoriesList(string _path)
    {           
        FtpWebRequest request = (FtpWebRequest)WebRequest.Create(new Uri("ftp://" + 
        IpAddress + _path));
        request.UseBinary = true;
        request.Method = WebRequestMethods.Ftp.ListDirectory;
        request.Credentials = new NetworkCredential(UserName, Password);

        FtpWebResponse response = (FtpWebResponse)request.GetResponse();
        Stream responseStream = response.GetResponseStream();
        StreamReader reader = new StreamReader(responseStream);

        string line = reader.ReadLine();
        while (line!=null)
        {
            ... //do something with line
            line = reader.ReadLine();
        }
        ...
        reader.Close();
        response.Close();


    }

我使用它如下:

FTPClient ftpClient = new FTPClient("user1", "pass1", "192.168.2.110", 21);

        string dirList = ftpClient.GetDirectoriesList("/lib1");

谁能发现问题?

推荐答案

我的解决方案:

public string[] GetDirectory()
{
    StringBuilder result = new StringBuilder();
    FtpWebRequest requestDir = (FtpWebRequest)WebRequest.Create("ftp://urserverip/");
    requestDir.Method = WebRequestMethods.Ftp.ListDirectory;
    requestDir.Credentials = new NetworkCredential("username", "password");
    FtpWebResponse responseDir = (FtpWebResponse)requestDir.GetResponse();
    StreamReader readerDir  = new StreamReader(responseDir.GetResponseStream());

    string line = readerDir.ReadLine();
    while (line != null)
    {
        result.Append(line);
        result.Append("
");
        line = readerDir.ReadLine();
    }

    result.Remove(result.ToString().LastIndexOf('
'), 1);
    responseDir.Close(); 
    return result.ToString().Split('
');
}

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