【12】FtpWebRequest上传下载

下载文件

/// <summary>   
/// 下载文件   
/// </summary>   
/// <param name="filename"></param>   
private static void DownLoadFile(string filename)   
{   
    FtpWebRequest req = (FtpWebRequest)WebRequest.Create("ftp://" + FtpAddress + "/" + filename);   
    req.Method = WebRequestMethods.Ftp.DownloadFile;   
    req.UseBinary = true;   
    req.UsePassive = true;   
    req.Credentials = new NetworkCredential(FtpUid, FtpPwd);   
    try  
    {   
        using (FtpWebResponse res = (FtpWebResponse)req.GetResponse())   
        {   
            string localfile = Path.Combine(LocalPath, filename);   
            FileStream fs = new FileStream(localfile, FileMode.Create, FileAccess.Write);   
            int buffer = 1024;  //1K缓冲   
            byte[] b = new byte[buffer];   
            int i = 0;   
            Stream stream = res.GetResponseStream();   
            while ((i = stream.Read(b, 0, buffer)) > 0)   
            {   
                fs.Write(b, 0, i);   
            }   
        }   
        Console.WriteLine(filename + " download!");   
        Log(filename + "下载成功");   

    }   
    catch (Exception ex)   
    {   
        Console.WriteLine(ex.ToString());   
        Log(ex.ToString());   
    }   
    finally  
    {   

    }   
}  

获取文件列表

/// <summary>   
/// 获取FTP文件列表   
/// </summary>   
/// <returns></returns>   
private static List<String> GetFileList()   
{   
    List<string> list = new List<string>();   
    FtpWebRequest req = (FtpWebRequest)WebRequest.Create(new Uri("ftp://" + FtpAddress + FtpRemotePath));   
    req.Credentials = new NetworkCredential(FtpUid, FtpPwd);   
    req.Method = WebRequestMethods.Ftp.ListDirectory;   
    req.UseBinary = true;   
    req.UsePassive = true;   
    try  
    {   
        using (FtpWebResponse res = (FtpWebResponse)req.GetResponse())   
        {   
            using (StreamReader sr = new StreamReader(res.GetResponseStream()))   
            {   
                string s;   
                while ((s = sr.ReadLine()) != null)   
                {   

                    list.Add(s);   
                }   
            }   
        }   
    }   
    catch (Exception ex)   
    {   
        Console.WriteLine(ex.ToString());   
        Log("下载文件列表失败:");   
        Log(ex.ToString());   
    }   
    return list;   

}  

上传文件

private static void UploadFile(string localFile)   
{   
    FileInfo fi = new FileInfo(localFile);   
    FileStream fs = fi.OpenRead();   
    long length = fs.Length;   
    FtpWebRequest req = (FtpWebRequest)WebRequest.Create("ftp://" + FtpAddress + FtpRemotePath + fi.Name);   
    req.Credentials = new NetworkCredential(FtpUid, FtpPwd);   
    req.Method = WebRequestMethods.Ftp.UploadFile;   
    req.UseBinary = true;   
    req.ContentLength = length;   
    req.Timeout = 10 * 1000;   
    try  
    {   
        Stream stream = req.GetRequestStream();   
           
        int BufferLength = 2048; //2K   
        byte[] b = new byte[BufferLength];   
        int i;   
        while ((i = fs.Read(b, 0, BufferLength)) > 0)   
        {   
            stream.Write(b, 0, i);   
        }   
        stream.Close();   
        stream.Dispose();   
           
    }   
    catch (Exception ex)   
    {   
        Console.WriteLine(ex.ToString());   
    }   
       
}