asp.net core 通过SFTP下载文件

Posted on 2024-07-04 11:00 火冰·瓶阅读(20) 评论(0) 编辑收藏举报

引用第三方库：Ssh .Net

try
{
    using (var client = new SftpClient(ftpHost, ftpPort, ftpUsername, ftpPassword))
    {
        client.Connect();
        IEnumerable<ISftpFile> fileEnumerable = client.ListDirectory(remoteDirectory, null).Where(g => !g.IsDirectory & g.Name.Contains(dateStr));//获取到文件列表
 
        foreach (var file in fileEnumerable)
        {
            var filename = $"{localDirectory}/{file.Name}";//本地需要保存文件的绝对路径
            if (!File.Exists(filename))
            {
                using (var localFile = File.OpenWrite(filename))
                    client.DownloadFile(file.FullName, localFile);
                downloadFiles.Add(file.Name);
            }
        }                 
        client.Disconnect();
    }
}
catch (SocketException socketExc)
{
    return new DownloadFileMessage
    {
        Code = DownloadFileCode.Faile,
        Message = "sftp地址连接超时(" + ftpHost + ")" + socketExc.Message
    };
}
catch (SshAuthenticationException authenExc)
{
    return new DownloadFileMessage
    {
        Code = DownloadFileCode.Faile,
        Message = "sftp账号或密码错误(" + ftpUsername + "/" + ftpPassword + ")" + authenExc.Message
    };
}

try {
    using (var client = new SftpClient(ftpHost, ftpPort, ftpUsername, ftpPassword))
    {
        client.Connect();
 
        var byt = client.ReadAllBytes(remoteZipPath);  //remoteZipPath是ftp上的路径
        File.WriteAllBytes(localZipPath, byt);  //localZipPath是本地的绝对路径
 
        client.Disconnect();
    }
}
catch (SocketException socketExc) 
{
    return "\"sftp地址连接超时(\" + ftpHost + \")\" + socketExc.Message";                    
}
catch (SshAuthenticationException authenExc)
{
    return "sftp账号或密码错误(" + ftpUsername + "/" + ftpPassword + ")" + authenExc.Message;
}
catch (SftpPathNotFoundException pathNotFoundExc)
{
    return "sftp没有找到对应的文件（" + remoteZipPath + "）" + pathNotFoundExc.Message;
}