ftp上传文件和下载文件

 

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487

public class FtpService {     #region Fields and attributes     private readonly int BufLen = 2048;     /// <summary>     /// ftp服务器地址     /// </summary>     private readonly string FtpServer = Properties.Settings.Default.FtpServer;     /// <summary>     /// ftp用户名     /// </summary>     private readonly string FtpUser = Properties.Settings.Default.user;     /// <summary>     /// ftp密码     /// </summary>     private readonly string FtpPassword = Properties.Settings.Default.password;     #endregion       #region Events     /// <summary>     /// 文件上传结果     /// </summary>     /// <param>true-成功，false-失败</param>     /// <param>信息</param>     public event Action<bool, string> EventUploadResult = null;     /// <summary>     /// 文件上传进度     /// </summary>     /// <param>文件已上传大小</param>     /// <param>文件总大小</param>     /// <param>文件名称</param>     public event Action<long, long, string> EventUploadFileProgress = null;     /// <summary>     /// 所有文件上传进度     /// </summary>     /// <param>文件已上传数</param>     /// <param>文件总总数</param>     public event Action<int, int> EventUploadBatchFilesProgress = null;     /// <summary>     /// 文件下载结果     /// </summary>     /// <param>true-成功，false-失败</param>     /// <param>信息</param>     public event Action<bool, string> EventDonwloadResult = null;     /// <summary>     /// 文件下载进度     /// </summary>     /// <param>文件已下载大小</param>     /// <param>文件总大小</param>     /// <param>文件名称</param>     public event Action<long, long, string> EventDonwloadFileProgress = null;     /// <summary>     /// 所有文件下载进度     /// </summary>     /// <param>文件已下载数</param>     /// <param>文件总总数</param>     public event Action<int, int> EventDonwloadBatchFilesProgress = null;     #endregion       #region public methods     /// <summary>     /// 上传文件到FTPServer     /// </summary>     /// <param name="file"></param>     public bool UploadFile(string localFilePath)     {         if (string.IsNullOrEmpty(localFilePath))             return false;           bool ret = true;         FtpWebRequest reqFtp = null;         try         {             FileInfo localFileInfo = new FileInfo(localFilePath);             string serverFilePath = $@"{FtpServer}\{ localFileInfo.Name}";               //FtpWebRequest配置             reqFtp = (FtpWebRequest)FtpWebRequest.Create(new Uri(serverFilePath));             reqFtp.UseBinary = true;             reqFtp.Credentials = new NetworkCredential(FtpUser, FtpPassword); //设置通信凭据             reqFtp.KeepAlive = false;             reqFtp.Method = WebRequestMethods.Ftp.UploadFile;             reqFtp.ContentLength = localFileInfo.Length;               //读本地文件数据并上传             using (FileStream fileStream = localFileInfo.OpenRead())             {                 using (Stream stream = reqFtp.GetRequestStream())                 {                     long totalLen = 0;                     int contentLen = 0;                     byte[] buff = new byte[BufLen];                     while ((contentLen = fileStream.Read(buff, 0, BufLen)) > 0)                     {                         stream.Write(buff, 0, contentLen);                         totalLen += contentLen;                         if (EventUploadFileProgress != null)                             EventUploadFileProgress(totalLen, localFileInfo.Length, localFileInfo.Name);                     }                 }             }               ret = true;             if (EventUploadResult != null)                 EventUploadResult(ret, $@"{localFilePath} : 上传成功！");         }         catch (Exception ex)         {             ret = false;             if (EventUploadResult != null)                 EventUploadResult(ret, $@"{localFilePath} : 上传失败！Exception : {ex.ToString()}");         }         finally         {             if (reqFtp != null)                 reqFtp.Abort();         }           return ret;     }       /// <summary>     /// 从FTPServer上下载文件     /// </summary>     public bool DownloadFile(string fileName, long length, string localDirectory)     {         if (string.IsNullOrEmpty(localDirectory) || string.IsNullOrEmpty(fileName))             return false;           bool ret = true;         FtpWebRequest reqFtp = null;         FtpWebResponse respFtp = null;         string localFilePath = $@"{localDirectory}\{fileName}";         string serverFilePath = $@"{FtpServer}\{fileName}";           try         {             if (File.Exists(localFilePath))                 File.Delete(localFilePath);               //建立ftp连接             reqFtp = (FtpWebRequest)FtpWebRequest.Create(new Uri(serverFilePath));             reqFtp.UseBinary = true;             reqFtp.Credentials = new NetworkCredential(FtpUser, FtpPassword);             reqFtp.KeepAlive = false;             reqFtp.Method = WebRequestMethods.Ftp.DownloadFile;               //读服务器文件数据并写入本地文件             respFtp = reqFtp.GetResponse() as FtpWebResponse;             using (Stream stream = respFtp.GetResponseStream())             {                 using (FileStream fileStream = new FileStream(localFilePath, FileMode.Create))                 {                     long totalLen = 0;                     int contentLen = 0;                     byte[] buff = new byte[BufLen];                     while ((contentLen = stream.Read(buff, 0, BufLen)) > 0)                     {                         fileStream.Write(buff, 0, contentLen);                         totalLen += contentLen;                         if (EventDonwloadFileProgress != null && length > 0)                             EventDonwloadFileProgress(totalLen, length, fileName);                     }                 }             }               ret = true;             if (EventDonwloadResult != null)                 EventDonwloadResult(ret, $@"{serverFilePath} : 下载成功！");         }         catch (Exception ex)         {             ret = false;             if (EventDonwloadResult != null)                 EventDonwloadResult(ret, $@"{serverFilePath} : 下载失败！Exception : {ex.ToString()}");         }         finally         {             if (reqFtp != null)                 reqFtp.Abort();             if (respFtp != null)                 respFtp.Close();         }           return ret;     }       /// <summary>     /// 批量上传文件     /// </summary>     /// <param name="localFilePaths"></param>     public void UploadFiles(List<string> localFilePaths)     {         if (localFilePaths == null || localFilePaths.Count == 0)             return;           int i = 1;         foreach (var localFilePath in localFilePaths)         {             UploadFile(localFilePath);             if (EventUploadBatchFilesProgress != null)                 EventUploadBatchFilesProgress(i++, localFilePaths.Count);         }     }       /// <summary>     /// 批量下载文件     /// </summary>     /// <param name="fileNames"></param>     /// <param name="localDirectory"></param>     public void DownloadFiles(List<FileModel> files, string localDirectory)     {         if (files == null || files.Count == 0 || string.IsNullOrEmpty(localDirectory))             return;           int i = 1;         foreach (var file in files)         {             DownloadFile(file.Name, file.Size, localDirectory);             if (EventDonwloadBatchFilesProgress != null)                 EventDonwloadBatchFilesProgress(i++, files.Count);         }     }       /// <summary>     /// 异步上传文件到FTPServer     /// </summary>     /// <param name="file"></param>     public async Task<bool> UploadFileAsync(string localFilePath)     {         if (string.IsNullOrEmpty(localFilePath))             return false;           bool ret = true;         FtpWebRequest reqFtp = null;         try         {             FileInfo localFileInfo = new FileInfo(localFilePath);             string serverFilePath = $@"{FtpServer}\{ localFileInfo.Name}";               //FtpWebRequest配置             reqFtp = (FtpWebRequest)FtpWebRequest.Create(new Uri(serverFilePath));             reqFtp.UseBinary = true;             reqFtp.Credentials = new NetworkCredential(FtpUser, FtpPassword); //设置通信凭据             reqFtp.KeepAlive = false;             reqFtp.Method = WebRequestMethods.Ftp.UploadFile;             reqFtp.ContentLength = localFileInfo.Length;               //读本地文件数据并上传             using (FileStream fileStream = localFileInfo.OpenRead())             {                 using (Stream stream = await reqFtp.GetRequestStreamAsync())                 {                     long totalLen = 0;                     int contentLen = 0;                     byte[] buff = new byte[BufLen];                     while ((contentLen = await fileStream.ReadAsync(buff, 0, BufLen)) > 0)                     {                         await stream.WriteAsync(buff, 0, contentLen);                         totalLen += contentLen;                         if (EventUploadFileProgress != null)                             EventUploadFileProgress(totalLen, localFileInfo.Length, localFileInfo.Name);                     }                 }             }               ret = true;             if (EventUploadResult != null)                 EventUploadResult(ret, $@"{localFilePath} : 上传成功！");         }         catch (Exception ex)         {             ret = false;             if (EventUploadResult != null)                 EventUploadResult(ret, $@"{localFilePath} : 上传失败！Exception : {ex.ToString()}");         }         finally         {             if (reqFtp != null)                 reqFtp.Abort();         }           return ret;     }       /// <summary>     /// 异步从FTPServer上下载文件     /// </summary>     public async Task<bool> DownloadFileAsync(string fileName, long length, string localDirectory)     {         if (string.IsNullOrEmpty(localDirectory) || string.IsNullOrEmpty(fileName))             return false;           bool ret = true;         FtpWebRequest reqFtp = null;         FtpWebResponse respFtp = null;         string localFilePath = $@"{localDirectory}\{fileName}";         string serverFilePath = $@"{FtpServer}\{fileName}";           try         {             if (File.Exists(localFilePath))                 File.Delete(localFilePath);               //建立ftp连接             reqFtp = (FtpWebRequest)FtpWebRequest.Create(new Uri(serverFilePath));             reqFtp.UseBinary = true;             reqFtp.Credentials = new NetworkCredential(FtpUser, FtpPassword);             reqFtp.KeepAlive = false;             reqFtp.Method = WebRequestMethods.Ftp.DownloadFile;               //读服务器文件数据并写入本地文件             respFtp = await reqFtp.GetResponseAsync() as FtpWebResponse;             using (Stream stream = respFtp.GetResponseStream())             {                 using (FileStream fileStream = new FileStream(localFilePath, FileMode.Create))                 {                     long totalLen = 0;                     int contentLen = 0;                     byte[] buff = new byte[BufLen];                     while ((contentLen = await stream.ReadAsync(buff, 0, BufLen)) > 0)                     {                         await fileStream.WriteAsync(buff, 0, contentLen);                         totalLen += contentLen;                         if (EventDonwloadFileProgress != null && length > 0)                             EventDonwloadFileProgress(totalLen, length, fileName);                     }                 }             }               ret = true;             if (EventDonwloadResult != null)                 EventDonwloadResult(ret, $@"{serverFilePath} : 下载成功！");         }         catch (Exception ex)         {             ret = false;             if (EventDonwloadResult != null)                 EventDonwloadResult(ret, $@"{serverFilePath} : 下载失败！Exception : {ex.ToString()}");         }         finally         {             if (reqFtp != null)                 reqFtp.Abort();             if (respFtp != null)                 respFtp.Close();         }           return ret;     }       /// <summary>     /// 异步批量上传文件     /// </summary>     /// <param name="localFilePaths"></param>     public async void UploadFilesAsync(List<string> localFilePaths)     {         if (localFilePaths == null || localFilePaths.Count == 0)             return;           int i = 1;         foreach (var localFilePath in localFilePaths)         {             await UploadFileAsync(localFilePath);             if (EventUploadBatchFilesProgress != null)                 EventUploadBatchFilesProgress(i++, localFilePaths.Count);         }     }       /// <summary>     /// 异步批量下载文件     /// </summary>     /// <param name="fileNames"></param>     /// <param name="localDirectory"></param>     public async void DownloadFilesAsync(List<FileModel> files, string localDirectory)     {         if (files == null || files.Count == 0 || string.IsNullOrEmpty(localDirectory))             return;           int i = 1;         foreach (var file in files)         {             await DownloadFileAsync(file.Name, file.Size, localDirectory);             if (EventDonwloadBatchFilesProgress != null)                 EventDonwloadBatchFilesProgress(i++, files.Count);             System.Threading.Thread.Sleep(1000);         }     }       /// <summary>     /// 读取远程文件的内容     /// </summary>     /// <param name="path"></param>     /// <returns></returns>     public string ReadFromFile(string serverFilePath)     {         if (string.IsNullOrEmpty(serverFilePath))             return "";           string ret = "";         FtpWebRequest reqFtp = null;         FtpWebResponse respFtp = null;           try         {             //建立ftp连接             reqFtp = (FtpWebRequest)FtpWebRequest.Create(new Uri(serverFilePath));             reqFtp.UseBinary = true;             reqFtp.Credentials = new NetworkCredential(FtpUser, FtpPassword);             reqFtp.KeepAlive = false;             reqFtp.Method = WebRequestMethods.Ftp.DownloadFile;               respFtp = reqFtp.GetResponse() as FtpWebResponse;             using (Stream stream = respFtp.GetResponseStream())             {                 using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))                 {                     ret = reader.ReadToEnd();                 }             }         }         catch (Exception ex)         {             ret = "";             throw ex;         }         finally         {             if (reqFtp != null)                 reqFtp.Abort();             if (respFtp != null)                 respFtp.Close();         }           return ret;     }       /// <summary>     /// 读取远程文件的内容     /// </summary>     /// <param name="path"></param>     /// <returns></returns>     public async Task<string> ReadFromFileAsync(string serverFilePath)     {         if (string.IsNullOrEmpty(serverFilePath))             return "";           string ret = "";         FtpWebRequest reqFtp = null;         FtpWebResponse respFtp = null;           try         {             //建立ftp连接             reqFtp = (FtpWebRequest)FtpWebRequest.Create(new Uri(serverFilePath));             reqFtp.UseBinary = true;             reqFtp.Credentials = new NetworkCredential(FtpUser, FtpPassword);             reqFtp.KeepAlive = false;             reqFtp.Method = WebRequestMethods.Ftp.DownloadFile;               respFtp = reqFtp.GetResponse() as FtpWebResponse;             using (Stream stream = respFtp.GetResponseStream())             {                 using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))                 {                     ret = await reader.ReadToEndAsync();                 }             }         }         catch (Exception ex)         {             ret = "";             throw ex;         }         finally         {             if (reqFtp != null)                 reqFtp.Abort();             if (respFtp != null)                 respFtp.Close();         }           return ret;     }       #endregion }