C# FTP删除文件以及文件夹
1.FTP文件操作类 FtpClient
1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Text; 5 using System.IO; 6 using System.Net; 7 using System.Xml.Serialization; 8 using System.Threading; 9 using System.Data; 10 using System.Data.SqlClient; 11 using System.Xml; 12 using System.Xml.Linq; 13 14 namespace XMDD.NewWeb 15 { 16 public class FtpClient 17 { 18 private string _ftpServerIp; 19 private string _ftpRemotePath; 20 21 public string FtpRemotePath 22 { 23 get { return _ftpRemotePath; } 24 set 25 { 26 _ftpRemotePath = value; 27 if (!string.IsNullOrWhiteSpace(_ftpRemotePath)) 28 this._ftpUri = "ftp://" + _ftpServerIp + "/" + _ftpRemotePath + "/"; 29 else 30 this._ftpUri = "ftp://" + _ftpServerIp + "/"; 31 } 32 } 33 private string _ftpUserId; 34 private string _ftpPassword; 35 private string _localSavePath; 36 private string _ftpUri; 37 38 public void InitFtp(string ftpServerIp, string ftpRemotePath, string ftpUserId, string ftpPassword, string localSavePath) 39 { 40 this._ftpServerIp = ftpServerIp; 41 this._ftpUserId = ftpUserId; 42 this._ftpPassword = ftpPassword; 43 this._localSavePath = localSavePath; 44 45 FtpRemotePath = ftpRemotePath; 46 if (!string.IsNullOrWhiteSpace(this._localSavePath) && !Directory.Exists(this._localSavePath)) 47 { 48 try 49 { 50 Directory.CreateDirectory(this._localSavePath); 51 } 52 catch { } 53 } 54 } 55 56 public void InitFtp(string ftpServerIp, string ftpUserId, string ftpPassword, string localSavePath) 57 { 58 InitFtp(ftpServerIp,"",ftpUserId,ftpPassword,localSavePath); 59 } 60 61 /// <summary> 62 /// 上传 63 /// </summary> 64 /// <param name="filename"></param> 65 public void Upload(string filename) 66 { 67 FileInfo fileInf = new FileInfo(filename); 68 string uri = _ftpUri + fileInf.Name; 69 FtpWebRequest reqFTP; 70 71 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri)); 72 reqFTP.Credentials = new NetworkCredential(_ftpUserId, _ftpPassword); 73 reqFTP.KeepAlive = false; 74 reqFTP.Method = WebRequestMethods.Ftp.UploadFile; 75 reqFTP.UseBinary = true; 76 reqFTP.ContentLength = fileInf.Length; 77 int buffLength = 2048; 78 byte[] buff = new byte[buffLength]; 79 int contentLen; 80 FileStream fs = null; 81 try 82 { 83 fs = fileInf.OpenRead(); 84 Stream strm = reqFTP.GetRequestStream(); 85 contentLen = fs.Read(buff, 0, buffLength); 86 while (contentLen != 0) 87 { 88 strm.Write(buff, 0, contentLen); 89 contentLen = fs.Read(buff, 0, buffLength); 90 } 91 strm.Close(); 92 } 93 catch (Exception ex) 94 { 95 throw ex; 96 } 97 finally 98 { 99 if(fs!=null) 100 fs.Close(); 101 } 102 } 103 104 public void Upload(byte[] buffer, string filename) 105 { 106 string uri = _ftpUri + filename; 107 FtpWebRequest reqFTP; 108 109 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri)); 110 reqFTP.Credentials = new NetworkCredential(_ftpUserId, _ftpPassword); 111 reqFTP.KeepAlive = false; 112 reqFTP.Method = WebRequestMethods.Ftp.UploadFile; 113 reqFTP.UseBinary = true; 114 reqFTP.ContentLength = buffer.Length; 115 try 116 { 117 Stream strm = reqFTP.GetRequestStream(); 118 strm.Write(buffer, 0, buffer.Length); 119 strm.Close(); 120 } 121 catch (Exception ex) 122 { 123 throw ex; 124 } 125 } 126 127 public void Upload(string ftpUri,string ftpUserId,string ftpPassword, string filename) 128 { 129 FileStream fs = null; 130 try 131 { 132 FileInfo fileInf = new FileInfo(filename); 133 string uri = ftpUri + fileInf.Name; 134 FtpWebRequest reqFTP; 135 136 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri)); 137 reqFTP.Credentials = new NetworkCredential(ftpUserId, ftpPassword); 138 reqFTP.KeepAlive = false; 139 reqFTP.Method = WebRequestMethods.Ftp.UploadFile; 140 reqFTP.UseBinary = true; 141 reqFTP.ContentLength = fileInf.Length; 142 int buffLength = 2048; 143 byte[] buff = new byte[buffLength]; 144 int contentLen; 145 fs = fileInf.OpenRead(); 146 147 Stream strm = reqFTP.GetRequestStream(); 148 contentLen = fs.Read(buff, 0, buffLength); 149 while (contentLen != 0) 150 { 151 strm.Write(buff, 0, contentLen); 152 contentLen = fs.Read(buff, 0, buffLength); 153 } 154 strm.Close(); 155 } 156 catch (Exception ex) 157 { 158 throw ex; 159 } 160 finally 161 { 162 if (fs != null) 163 fs.Close(); 164 } 165 } 166 167 /// <summary> 168 /// 下载 169 /// </summary> 170 /// <param name="filePath"></param> 171 /// <param name="fileName"></param> 172 public string Download(string fileName) 173 { 174 if (string.IsNullOrEmpty(fileName)) 175 return null; 176 177 FtpWebRequest reqFTP; 178 FileStream outputStream=null; 179 FileStream fs = null; 180 string content = ""; 181 try 182 { 183 outputStream = new FileStream(_localSavePath + "\\" + fileName, FileMode.Create); 184 185 reqFTP = (FtpWebRequest)WebRequest.Create(new Uri(_ftpUri + fileName)); 186 187 reqFTP.Method = WebRequestMethods.Ftp.DownloadFile; 188 reqFTP.UseBinary = true; 189 reqFTP.Credentials = new NetworkCredential(_ftpUserId, _ftpPassword); 190 var response = (FtpWebResponse)reqFTP.GetResponse(); 191 var ftpStream = response.GetResponseStream(); 192 var cl = response.ContentLength; 193 var bufferSize = 2048; 194 int readCount; 195 byte[] buffer = new byte[bufferSize]; 196 197 readCount = ftpStream.Read(buffer, 0, bufferSize); 198 while (readCount > 0) 199 { 200 outputStream.Write(buffer, 0, readCount); 201 readCount = ftpStream.Read(buffer, 0, bufferSize); 202 } 203 204 ftpStream.Close(); 205 outputStream.Close(); 206 response.Close(); 207 //Buffer.Log(string.Format("Ftp文件{1}下载成功！" , DateTime.Now.ToString(), fileName)); 208 209 fs = new FileStream(_localSavePath + "\\" + fileName, FileMode.Open); 210 var sr = new StreamReader(fs); 211 212 content = sr.ReadToEnd(); 213 214 sr.Close(); 215 fs.Close(); 216 217 Delete(fileName); 218 } 219 catch (Exception ex) 220 { 221 if (outputStream != null) 222 outputStream.Close(); 223 if (fs != null) 224 fs.Close(); 225 throw ex; 226 } 227 228 return content; 229 230 } 231 232 public byte[] DownloadByte(string fileName) 233 { 234 if (string.IsNullOrEmpty(fileName)) 235 return null; 236 237 FtpWebRequest reqFTP; 238 byte[] buff = null; 239 try 240 { 241 242 reqFTP = (FtpWebRequest)WebRequest.Create(new Uri(_ftpUri + fileName)); 243 244 reqFTP.Method = WebRequestMethods.Ftp.DownloadFile; 245 reqFTP.UseBinary = true; 246 reqFTP.Credentials = new NetworkCredential(_ftpUserId, _ftpPassword); 247 var response = (FtpWebResponse)reqFTP.GetResponse(); 248 var ftpStream = response.GetResponseStream(); 249 250 MemoryStream stmMemory = new MemoryStream(); 251 byte[] buffer = new byte[64 * 1024]; 252 int i; 253 while ((i = ftpStream.Read(buffer, 0, buffer.Length)) > 0) 254 { 255 stmMemory.Write(buffer, 0, i); 256 } 257 buff = stmMemory.ToArray(); 258 stmMemory.Close(); 259 ftpStream.Close(); 260 response.Close(); 261 } 262 catch (Exception ex) 263 { 264 throw ex; 265 } 266 267 return buff; 268 269 } 270 271 /// <summary> 272 /// 删除文件 273 /// </summary> 274 /// <param name="fileName"></param> 275 public void Delete(string fileName) 276 { 277 try 278 { 279 string uri = _ftpUri + fileName; 280 FtpWebRequest reqFTP; 281 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri)); 282 283 reqFTP.Credentials = new NetworkCredential(_ftpUserId, _ftpPassword); 284 reqFTP.KeepAlive = false; 285 reqFTP.Method = WebRequestMethods.Ftp.DeleteFile; 286 287 string result = String.Empty; 288 FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse(); 289 long size = response.ContentLength; 290 Stream datastream = response.GetResponseStream(); 291 StreamReader sr = new StreamReader(datastream); 292 result = sr.ReadToEnd(); 293 sr.Close(); 294 datastream.Close(); 295 response.Close(); 296 //Buffer.Log(string.Format("Ftp文件{1}删除成功！", DateTime.Now.ToString(), fileName)); 297 } 298 catch (Exception ex) 299 { 300 throw ex; 301 } 302 } 303 304 /// <summary> 305 /// 删除文件夹（只针对空文件夹） 306 /// </summary> 307 /// <param name="folderName"></param> 308 public void RemoveDirectory(string folderName) 309 { 310 try 311 { 312 string uri = _ftpUri + folderName; 313 FtpWebRequest reqFTP; 314 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri)); 315 316 reqFTP.Credentials = new NetworkCredential(_ftpUserId, _ftpPassword); 317 reqFTP.KeepAlive = false; 318 reqFTP.Method = WebRequestMethods.Ftp.RemoveDirectory; 319 320 string result = String.Empty; 321 FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse(); 322 long size = response.ContentLength; 323 Stream datastream = response.GetResponseStream(); 324 StreamReader sr = new StreamReader(datastream); 325 result = sr.ReadToEnd(); 326 sr.Close(); 327 datastream.Close(); 328 response.Close(); 329 } 330 catch (Exception ex) 331 { 332 throw ex; 333 } 334 } 335 336 /// <summary> 337 /// 删除文件夹以及其下面的所有内容 338 /// </summary> 339 /// <param name="ftp">ftp</param> 340 public void DeleteFtpDirWithAll(FtpClient ftp) 341 { 342 string[] fileList = ftp.GetFileList("");//获取所有文件列表（仅文件） 343 //1.首先删除所有的文件 344 if (fileList != null && fileList.Length > 0) 345 { 346 foreach (string file in fileList) 347 { 348 ftp.Delete(file); 349 } 350 } 351 352 //获取所有文件夹列表（仅文件夹） 353 string[] emptyDriList = ftp.GetDirectoryList(); 354 foreach (string dir in emptyDriList) 355 { 356 //有时候会出现空的子目录，这时候要排除 357 if (string.IsNullOrWhiteSpace(dir)) 358 { 359 continue; 360 } 361 362 string curDir = "/" + dir; 363 ftp.FtpRemotePath = ftp.FtpRemotePath + curDir; 364 //是否有子文件夹存在 365 if (ftp.GetDirectoryList() != null && ftp.GetDirectoryList().Length > 0) 366 { 367 DeleteFtpDirWithAll(ftp);//如果有就继续递归 368 } 369 ftp.FtpRemotePath = ftp.FtpRemotePath.Replace(curDir, "");//回退到上级目录以删除其本身 370 ftp.RemoveDirectory(dir);//删除当前文件夹 371 } 372 } 373 374 /// <summary> 375 /// 获取当前目录下明细(包含文件和文件夹) 376 /// </summary> 377 /// <returns></returns> 378 public string[] GetFilesDetailList() 379 { 380 //string[] downloadFiles; 381 try 382 { 383 StringBuilder result = new StringBuilder(); 384 FtpWebRequest ftp; 385 ftp = (FtpWebRequest)FtpWebRequest.Create(new Uri(_ftpUri)); 386 ftp.Credentials = new NetworkCredential(_ftpUserId, _ftpPassword); 387 ftp.Method = WebRequestMethods.Ftp.ListDirectoryDetails; 388 WebResponse response = ftp.GetResponse(); 389 StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.Default); 390 391 //while (reader.Read() > 0) 392 //{ 393 394 //} 395 string line = reader.ReadLine(); 396 //line = reader.ReadLine(); 397 //line = reader.ReadLine(); 398 399 while (line != null) 400 { 401 result.Append(line); 402 result.Append("\n"); 403 line = reader.ReadLine(); 404 } 405 if (result.Length == 0) 406 return null; 407 result.Remove(result.ToString().LastIndexOf("\n"), 1); 408 reader.Close(); 409 response.Close(); 410 return result.ToString().Split('\n'); 411 } 412 catch (Exception ex) 413 { 414 415 416 return null; 417 } 418 } 419 420 /// <summary> 421 /// 获取当前目录下文件列表(仅文件) 422 /// </summary> 423 /// <returns></returns> 424 public string[] GetFileList(string mask) 425 { 426 string[] downloadFiles=null; 427 StringBuilder result = new StringBuilder(); 428 FtpWebRequest reqFTP; 429 try 430 { 431 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(_ftpUri)); 432 reqFTP.UseBinary = true; 433 reqFTP.Credentials = new NetworkCredential(_ftpUserId, _ftpPassword); 434 reqFTP.Method = WebRequestMethods.Ftp.ListDirectory; 435 WebResponse response = reqFTP.GetResponse(); 436 StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.Default); 437 438 string line = reader.ReadLine(); 439 while (line != null) 440 { 441 if (mask.Trim() != string.Empty && mask.Trim() != "*.*") 442 { 443 444 string mask_ = mask.Substring(0, mask.IndexOf("*")); 445 if (line.Substring(0, mask_.Length) == mask_) 446 { 447 result.Append(line); 448 result.Append("\n"); 449 } 450 } 451 else 452 { 453 result.Append(line); 454 result.Append("\n"); 455 } 456 line = reader.ReadLine(); 457 } 458 if (result.Length == 0) 459 return new string[]{}; 460 result.Remove(result.ToString().LastIndexOf('\n'), 1); 461 reader.Close(); 462 response.Close(); 463 downloadFiles= result.ToString().Split('\n'); 464 } 465 catch (Exception ex) 466 { 467 return new string[] { }; 468 } 469 470 if (downloadFiles == null) 471 downloadFiles = new string[] { }; 472 return downloadFiles; 473 } 474 475 public string GetSingleFile() 476 { 477 var list = GetFileList("*.*"); 478 479 if (list != null && list.Length > 0) 480 return list[0]; 481 else 482 return null; 483 } 484 485 /// <summary> 486 /// 获取当前目录下所有的文件夹列表(仅文件夹) 487 /// </summary> 488 /// <returns></returns> 489 public string[] GetDirectoryList() 490 { 491 string[] drectory = GetFilesDetailList(); 492 if (drectory == null) 493 return null; 494 string m = string.Empty; 495 foreach (string str in drectory) 496 { 497 int dirPos = str.IndexOf("<DIR>"); 498 if (dirPos>0) 499 { 500 /*判断 Windows 风格*/ 501 m += str.Substring(dirPos + 5).Trim() + "\n"; 502 } 503 else if (str.Trim().Substring(0, 1).ToUpper() == "D") 504 { 505 /*判断 Unix 风格*/ 506 string dir = str.Substring(54).Trim(); 507 if (dir != "." && dir != "..") 508 { 509 m += dir + "\n"; 510 } 511 } 512 } 513 514 char[] n = new char[] { '\n' }; 515 return m.Split(n); 516 } 517 518 /// <summary> 519 /// 判断当前目录下指定的子目录是否存在 520 /// </summary> 521 /// <param name="RemoteDirectoryName">指定的目录名</param> 522 public bool DirectoryExist(string RemoteDirectoryName) 523 { 524 string[] dirList = GetDirectoryList(); 525 if (dirList != null) 526 { 527 foreach (string str in dirList) 528 { 529 if (str.Trim() == RemoteDirectoryName.Trim()) 530 { 531 return true; 532 } 533 } 534 } 535 return false; 536 } 537 538 /// <summary> 539 /// 判断当前目录下指定的文件是否存在 540 /// </summary> 541 /// <param name="RemoteFileName">远程文件名</param> 542 public bool FileExist(string RemoteFileName) 543 { 544 string[] fileList = GetFileList("*.*"); 545 foreach (string str in fileList) 546 { 547 if (str.Trim() == RemoteFileName.Trim()) 548 { 549 return true; 550 } 551 } 552 return false; 553 } 554 555 /// <summary> 556 /// 创建文件夹 557 /// </summary> 558 /// <param name="dirName"></param> 559 public void MakeDir(string dirName) 560 { 561 FtpWebRequest reqFTP; 562 try 563 { 564 // dirName = name of the directory to create. 565 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(_ftpUri + dirName)); 566 reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory; 567 reqFTP.UseBinary = true; 568 reqFTP.Credentials = new NetworkCredential(_ftpUserId, _ftpPassword); 569 FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse(); 570 Stream ftpStream = response.GetResponseStream(); 571 572 ftpStream.Close(); 573 response.Close(); 574 } 575 catch (Exception ex) 576 { 577 throw ex; 578 } 579 } 580 581 /// <summary> 582 /// 获取指定文件大小 583 /// </summary> 584 /// <param name="filename"></param> 585 /// <returns></returns> 586 public long GetFileSize(string filename) 587 { 588 FtpWebRequest reqFTP; 589 long fileSize = 0; 590 try 591 { 592 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(_ftpUri + filename)); 593 reqFTP.Method = WebRequestMethods.Ftp.GetFileSize; 594 reqFTP.UseBinary = true; 595 reqFTP.Credentials = new NetworkCredential(_ftpUserId, _ftpPassword); 596 FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse(); 597 Stream ftpStream = response.GetResponseStream(); 598 fileSize = response.ContentLength; 599 600 ftpStream.Close(); 601 response.Close(); 602 } 603 catch (Exception ex) 604 { 605 //throw new Exception("FtpWeb:GetFileSize Error --> " + ex.Message); 606 } 607 return fileSize; 608 } 609 610 /// <summary> 611 /// 改名 612 /// </summary> 613 /// <param name="currentFilename"></param> 614 /// <param name="newFilename"></param> 615 public void ReName(string currentFilename, string newFilename) 616 { 617 FtpWebRequest reqFTP; 618 try 619 { 620 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(_ftpUri + currentFilename)); 621 reqFTP.Method = WebRequestMethods.Ftp.Rename; 622 reqFTP.RenameTo = newFilename; 623 reqFTP.UseBinary = true; 624 reqFTP.Credentials = new NetworkCredential(_ftpUserId, _ftpPassword); 625 FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse(); 626 Stream ftpStream = response.GetResponseStream(); 627 628 ftpStream.Close(); 629 response.Close(); 630 } 631 catch (Exception ex) 632 { 633 throw ex; 634 } 635 } 636 637 /// <summary> 638 /// 移动文件 639 /// </summary> 640 /// <param name="currentFilename"></param> 641 /// <param name="newFilename"></param> 642 public void MovieFile(string currentFilename, string newDirectory) 643 { 644 ReName(currentFilename, newDirectory); 645 } 646 647 } 648 }
2.调用 DictionaryDelete
1 //获取FTP配置信息 2 string ftpServerIP = System.Configuration.ConfigurationManager.AppSettings["ConfigFTPAddress"].ToString();//FTP地址 3 string ftpUserName = System.Configuration.ConfigurationManager.AppSettings["ConfigFTPLoginName"].ToString();//FTP登录用户名 4 string ftpUserPwd = System.Configuration.ConfigurationManager.AppSettings["ConfigFTPLoginPwd"].ToString();//FTP登录密码 5 string dirName = "10.6.1.140";//这个IP地址只是一个文件夹的名称 6 7 /// <summary> 8 /// 删除文件夹 9 /// </summary> 10 private void DictionaryDelete() 11 { 12 FtpClient ftp = new FtpClient(); 13 ftp.InitFtp(ftpServerIP, ftpUserName, ftpUserPwd, ""); 14 ftp.FtpRemotePath = dirName; 15 ftp.DeleteFtpDirWithAll(ftp); 16 } 17 18 /// <summary> 19 /// 创建文件夹 20 /// </summary> 21 private void DictionaryCreate() 22 { 23 FtpClient ftp = new FtpClient(); 24 ftp.InitFtp(ftpServerIP, ftpUserName, ftpUserPwd, ""); 25 if (!ftp.DirectoryExist(dirName)) 26 { 27 ftp.MakeDir(dirName); 28 } 29 }
3.说明，主要方法是 FtpClient 类中的 DeleteFtpDirWithAll 方法
删除前：
删除后：
