C# 利用Rar压缩文件并FTP上传

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1.利用Rar压缩文件

        /// <summary>        /// 使用Rar压缩文件        /// </summary>        /// <param name="fromFilePath">待压缩文件路径</param>        /// <param name="rarFilePath">压缩后的文件路径</param>        /// <returns>返回压缩结果</returns>        public string RarFile(string fromFilePath, string rarFilePath)        {            try            {                //Rar程序安装目录                var fileName = @"C:\Program Files\WinRAR\rar.exe";                //命令行参数                  var arguments = " a " + rarFilePath + " " + fromFilePath;                var startInfo = new ProcessStartInfo();                startInfo.FileName = fileName;                startInfo.Arguments = arguments;                startInfo.WindowStyle = ProcessWindowStyle.Hidden;                //打包文件存放目录                  var dir = Path.GetDirectoryName(fromFilePath);                if (dir != null)                {                    startInfo.WorkingDirectory = dir;                    var process = new Process { StartInfo = startInfo };                    process.StartInfo.RedirectStandardOutput = true;                    process.StartInfo.RedirectStandardError = true;                    process.StartInfo.UseShellExecute = false;                    process.StartInfo.CreateNoWindow = true;                    process.Start();                    process.WaitForExit();                    var output = process.StandardOutput.ReadToEnd();                    var errMsg = process.StandardError.ReadToEnd();                    process.Close();                    //rar可能是中文版或英文版                    if (output.IndexOf("完成", StringComparison.Ordinal) > -1 || output.ToLower().IndexOf("done", StringComparison.Ordinal) > -1)                    {                        return "完成";                    }                }                return "文件所在目录不存在";            }            catch (Exception ex)            {                return ex.Message;            }        }

调用方法：

//将文件压缩到同级目录
var fromFile = "";
var dir = Path.GetDirectoryName(fromFile);
var name = Path.GetFileNameWithoutExtension(fromFile);
var tofile = dir.Combine(name + ".zip");
var result = RarFile(fromFile, tofile);

2.通过FTP上传文件

       /// <summary>        /// Ftp上传文件        /// </summary>        /// <param name="localFile">本地文件路径</param>        /// <param name="ftpServer">ftp服务器地址</param>        /// <param name="ftpUserName">ftp用户名</param>        /// <param name="ftpPassword">ftp用户密码</param>        /// <returns></returns>        public string Upload(string localFile, string ftpServer, string ftpUserName, string ftpPassword)        {            if (File.Exists(localFile))            {                var fileInfo = new FileInfo(localFile);                using (var fileStream = fileInfo.OpenRead())                {                    var length = fileStream.Length;                    var request = (FtpWebRequest)WebRequest.Create("ftp://" + ftpServer + "/" + fileInfo.Name);                    request.Credentials = new NetworkCredential(ftpUserName, ftpPassword);                    request.Method = WebRequestMethods.Ftp.UploadFile;                    request.UseBinary = true;                    request.ContentLength = length;                    request.Timeout = 10 * 1000;                    try                    {                        var stream = request.GetRequestStream();                        var BufferLength = 1024 * 1024; //1M                           var b = new byte[BufferLength];                        int i;                        while ((i = fileStream.Read(b, 0, BufferLength)) > 0)                        {                            stream.Write(b, 0, i);                        }                        stream.Close();                        stream.Dispose();                        return "上传完毕";                    }                    catch (Exception ex)                    {                        return ex.Message;                    }                }            }            return "本地文件不存在!";        }

通过以上方式，再做个定时任务，可以将服务器文件定期备份到指定的ftp上。

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