C#操作FTP, FTPHelper和SFTPHelper
1. FTPHelper
1 using System; 2 using System.Collections.Generic; 3 using System.IO; 4 using System.Net; 5 using System.Text; 6 7 public class FTPHelper 8 { 9 /// <summary> 10 /// 上传文件 11 /// </summary> 12 /// <param name="fileinfo">需要上传的文件</param> 13 /// <param name="targetDir">目标路径</param> 14 /// <param name="hostname">ftp地址</param> 15 /// <param name="username">ftp用户名</param> 16 /// <param name="password">ftp密码</param> 17 public static void UploadFile(FileInfo fileinfo, string targetDir, string hostname, string username, string password) 18 { 19 //1. check target 20 string target; 21 if (targetDir.Trim() == "") 22 { 23 return; 24 } 25 string filename = fileinfo.Name; 26 if (!string.IsNullOrEmpty(filename)) 27 target = filename; 28 else 29 target = Guid.NewGuid().ToString(); //使用临时文件名 30 31 string URI = "FTP://" + hostname + "/" + targetDir + "/" + target; 32 ///WebClient webcl = new WebClient(); 33 System.Net.FtpWebRequest ftp = GetRequest(URI, username, password); 34 35 //设置FTP命令 设置所要执行的FTP命令， 36 //ftp.Method = System.Net.WebRequestMethods.Ftp.ListDirectoryDetails;//假设此处为显示指定路径下的文件列表 37 ftp.Method = System.Net.WebRequestMethods.Ftp.UploadFile; 38 //指定文件传输的数据类型 39 ftp.UseBinary = true; 40 ftp.UsePassive = true; 41 42 //告诉ftp文件大小 43 ftp.ContentLength = fileinfo.Length; 44 //缓冲大小设置为2KB 45 const int BufferSize = 2048; 46 byte[] content = new byte[BufferSize - 1 + 1]; 47 int dataRead; 48 49 //打开一个文件流 (System.IO.FileStream) 去读上传的文件 50 using (FileStream fs = fileinfo.OpenRead()) 51 { 52 try 53 { 54 //把上传的文件写入流 55 using (Stream rs = ftp.GetRequestStream()) 56 { 57 do 58 { 59 //每次读文件流的2KB 60 dataRead = fs.Read(content, 0, BufferSize); 61 rs.Write(content, 0, dataRead); 62 } while (!(dataRead < BufferSize)); 63 rs.Close(); 64 } 65 66 } 67 catch (Exception ex) { } 68 finally 69 { 70 fs.Close(); 71 } 72 73 } 74 75 ftp = null; 76 } 77 78 /// <summary> 79 /// 下载文件 80 /// </summary> 81 /// <param name="localDir">下载至本地路径</param> 82 /// <param name="FtpDir">ftp目标文件路径</param> 83 /// <param name="FtpFile">从ftp要下载的文件名</param> 84 /// <param name="hostname">ftp地址即IP</param> 85 /// <param name="username">ftp用户名</param> 86 /// <param name="password">ftp密码</param> 87 public static void DownloadFile(string localDir, string FtpDir, string FtpFile, string hostname, string username, string password) 88 { 89 string URI = "FTP://" + hostname + "/" + FtpDir + "/" + FtpFile; 90 string tmpname = Guid.NewGuid().ToString(); 91 string localfile = localDir + @"\" + tmpname; 92 93 System.Net.FtpWebRequest ftp = GetRequest(URI, username, password); 94 ftp.Method = System.Net.WebRequestMethods.Ftp.DownloadFile; 95 ftp.UseBinary = true; 96 ftp.UsePassive = false; 97 98 using (FtpWebResponse response = (FtpWebResponse)ftp.GetResponse()) 99 { 100 using (Stream responseStream = response.GetResponseStream()) 101 { 102 //loop to read & write to file 103 using (FileStream fs = new FileStream(localfile, FileMode.CreateNew)) 104 { 105 try 106 { 107 byte[] buffer = new byte[2048]; 108 int read = 0; 109 do 110 { 111 read = responseStream.Read(buffer, 0, buffer.Length); 112 fs.Write(buffer, 0, read); 113 } while (!(read == 0)); 114 responseStream.Close(); 115 fs.Flush(); 116 fs.Close(); 117 } 118 catch (Exception) 119 { 120 //catch error and delete file only partially downloaded 121 fs.Close(); 122 //delete target file as it's incomplete 123 File.Delete(localfile); 124 throw; 125 } 126 } 127 128 responseStream.Close(); 129 } 130 131 response.Close(); 132 } 133 134 135 136 try 137 { 138 File.Delete(localDir + @"\" + FtpFile); 139 File.Move(localfile, localDir + @"\" + FtpFile); 140 141 142 ftp = null; 143 ftp = GetRequest(URI, username, password); 144 ftp.Method = System.Net.WebRequestMethods.Ftp.DeleteFile; 145 ftp.GetResponse(); 146 147 } 148 catch (Exception ex) 149 { 150 File.Delete(localfile); 151 throw ex; 152 } 153 154 // 记录日志 "从" + URI.ToString() + "下载到" + localDir + @"\" + FtpFile + "成功." ); 155 ftp = null; 156 } 157 158 159 /// <summary> 160 /// 下载文件 161 /// </summary> 162 /// <param name="localDir">下载至本地路径</param> 163 /// <param name="FtpDir">ftp目标文件路径</param> 164 /// <param name="FtpFile">从ftp要下载的文件名</param> 165 /// <param name="hostname">ftp地址即IP</param> 166 /// <param name="username">ftp用户名</param> 167 /// <param name="password">ftp密码</param> 168 public static byte[] DownloadFileBytes(string localDir, string FtpDir, string FtpFile, string hostname, string username, string password) 169 { 170 byte[] bts; 171 string URI = "FTP://" + hostname + "/" + FtpDir + "/" + FtpFile; 172 string tmpname = Guid.NewGuid().ToString(); 173 string localfile = localDir + @"\" + tmpname; 174 175 System.Net.FtpWebRequest ftp = GetRequest(URI, username, password); 176 ftp.Method = System.Net.WebRequestMethods.Ftp.DownloadFile; 177 ftp.UseBinary = true; 178 ftp.UsePassive = true; 179 180 using (FtpWebResponse response = (FtpWebResponse)ftp.GetResponse()) 181 { 182 using (Stream responseStream = response.GetResponseStream()) 183 { 184 //loop to read & write to file 185 using (MemoryStream fs = new MemoryStream()) 186 { 187 try 188 { 189 byte[] buffer = new byte[2048]; 190 int read = 0; 191 do 192 { 193 read = responseStream.Read(buffer, 0, buffer.Length); 194 fs.Write(buffer, 0, read); 195 } while (!(read == 0)); 196 responseStream.Close(); 197 198 //--- 199 byte[] mbt = new byte[fs.Length]; 200 fs.Read(mbt, 0, mbt.Length); 201 202 bts = mbt; 203 //--- 204 fs.Flush(); 205 fs.Close(); 206 } 207 catch (Exception) 208 { 209 //catch error and delete file only partially downloaded 210 fs.Close(); 211 //delete target file as it's incomplete 212 File.Delete(localfile); 213 throw; 214 } 215 } 216 217 responseStream.Close(); 218 } 219 220 response.Close(); 221 } 222 223 ftp = null; 224 return bts; 225 } 226 227 /// <summary> 228 /// 搜索远程文件 229 /// </summary> 230 /// <param name="targetDir"></param> 231 /// <param name="hostname"></param> 232 /// <param name="username"></param> 233 /// <param name="password"></param> 234 /// <param name="SearchPattern"></param> 235 /// <returns></returns> 236 public static List<string> ListDirectory(string targetDir, string hostname, string username, string password, string SearchPattern) 237 { 238 List<string> result = new List<string>(); 239 try 240 { 241 string URI = "FTP://" + hostname + "/" + targetDir + "/" + SearchPattern; 242 243 System.Net.FtpWebRequest ftp = GetRequest(URI, username, password); 244 ftp.Method = System.Net.WebRequestMethods.Ftp.ListDirectory; 245 ftp.UsePassive = true; 246 ftp.UseBinary = true; 247 248 249 string str = GetStringResponse(ftp); 250 str = str.Replace("\r\n", "\r").TrimEnd('\r'); 251 str = str.Replace("\n", "\r"); 252 if (str != string.Empty) 253 result.AddRange(str.Split('\r')); 254 255 return result; 256 } 257 catch { } 258 return null; 259 } 260 261 private static string GetStringResponse(FtpWebRequest ftp) 262 { 263 //Get the result, streaming to a string 264 string result = ""; 265 using (FtpWebResponse response = (FtpWebResponse)ftp.GetResponse()) 266 { 267 long size = response.ContentLength; 268 using (Stream datastream = response.GetResponseStream()) 269 { 270 using (StreamReader sr = new StreamReader(datastream, System.Text.Encoding.Default)) 271 { 272 result = sr.ReadToEnd(); 273 sr.Close(); 274 } 275 276 datastream.Close(); 277 } 278 279 response.Close(); 280 } 281 282 return result; 283 } 284 285 /// 在ftp服务器上创建目录 286 /// </summary> 287 /// <param name="dirName">创建的目录名称</param> 288 /// <param name="ftpHostIP">ftp地址</param> 289 /// <param name="username">用户名</param> 290 /// <param name="password">密码</param> 291 public void MakeDir(string dirName, string ftpHostIP, string username, string password) 292 { 293 try 294 { 295 string uri = "ftp://" + ftpHostIP + "/" + dirName; 296 System.Net.FtpWebRequest ftp = GetRequest(uri, username, password); 297 ftp.Method = WebRequestMethods.Ftp.MakeDirectory; 298 299 FtpWebResponse response = (FtpWebResponse)ftp.GetResponse(); 300 response.Close(); 301 } 302 catch (Exception ex) 303 { 304 throw new Exception(ex.Message); 305 } 306 } 307 308 /// <summary> 309 /// 删除文件 310 /// </summary> 311 /// <param name="dirName">创建的目录名称</param> 312 /// <param name="ftpHostIP">ftp地址</param> 313 /// <param name="username">用户名</param> 314 /// <param name="password">密码</param> 315 public static void delFile(string dirName, string filename, string ftpHostIP, string username, string password) 316 { 317 try 318 { 319 string uri = "ftp://" + ftpHostIP + "/"; 320 if (!string.IsNullOrEmpty(dirName)) { 321 uri += dirName + "/"; 322 } 323 uri += filename; 324 System.Net.FtpWebRequest ftp = GetRequest(uri, username, password); 325 ftp.Method = WebRequestMethods.Ftp.DeleteFile; 326 FtpWebResponse response = (FtpWebResponse)ftp.GetResponse(); 327 response.Close(); 328 } 329 catch (Exception ex) 330 { 331 throw new Exception(ex.Message); 332 } 333 } 334 335 /// <summary> 336 /// 删除目录 337 /// </summary> 338 /// <param name="dirName">创建的目录名称</param> 339 /// <param name="ftpHostIP">ftp地址</param> 340 /// <param name="username">用户名</param> 341 /// <param name="password">密码</param> 342 public void delDir(string dirName, string ftpHostIP, string username, string password) 343 { 344 try 345 { 346 string uri = "ftp://" + ftpHostIP + "/" + dirName; 347 System.Net.FtpWebRequest ftp = GetRequest(uri, username, password); 348 ftp.Method = WebRequestMethods.Ftp.RemoveDirectory; 349 FtpWebResponse response = (FtpWebResponse)ftp.GetResponse(); 350 response.Close(); 351 } 352 catch (Exception ex) 353 { 354 throw new Exception(ex.Message); 355 } 356 } 357 358 /// <summary> 359 /// 文件重命名 360 /// </summary> 361 /// <param name="currentFilename">当前目录名称</param> 362 /// <param name="newFilename">重命名目录名称</param> 363 /// <param name="ftpServerIP">ftp地址</param> 364 /// <param name="username">用户名</param> 365 /// <param name="password">密码</param> 366 public void Rename(string currentFilename, string newFilename, string ftpServerIP, string username, string password) 367 { 368 try 369 { 370 371 FileInfo fileInf = new FileInfo(currentFilename); 372 string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name; 373 System.Net.FtpWebRequest ftp = GetRequest(uri, username, password); 374 ftp.Method = WebRequestMethods.Ftp.Rename; 375 376 ftp.RenameTo = newFilename; 377 FtpWebResponse response = (FtpWebResponse)ftp.GetResponse(); 378 379 response.Close(); 380 } 381 catch (Exception ex) 382 { 383 throw new Exception(ex.Message); 384 } 385 } 386 387 private static FtpWebRequest GetRequest(string URI, string username, string password) 388 { 389 //根据服务器信息FtpWebRequest创建类的对象 390 FtpWebRequest result = (FtpWebRequest)FtpWebRequest.Create(URI); 391 //提供身份验证信息 392 result.Credentials = new System.Net.NetworkCredential(username, password); 393 //设置请求完成之后是否保持到FTP服务器的控制连接，默认值为true 394 result.KeepAlive = false; 395 return result; 396 } 397 398 /* 399 /// <summary> 400 /// 向Ftp服务器上传文件并创建和本地相同的目录结构 401 /// 遍历目录和子目录的文件 402 /// </summary> 403 /// <param name="file"></param> 404 private void GetFileSystemInfos(FileSystemInfo file) 405 { 406 string getDirecName = file.Name; 407 if (!ftpIsExistsFile(getDirecName, "192.168.0.172", "Anonymous", "") && file.Name.Equals(FileName)) 408 { 409 MakeDir(getDirecName, "192.168.0.172", "Anonymous", ""); 410 } 411 if (!file.Exists) return; 412 DirectoryInfo dire = file as DirectoryInfo; 413 if (dire == null) return; 414 FileSystemInfo[] files = dire.GetFileSystemInfos(); 415 416 for (int i = 0; i < files.Length; i++) 417 { 418 FileInfo fi = files[i] as FileInfo; 419 if (fi != null) 420 { 421 DirectoryInfo DirecObj = fi.Directory; 422 string DireObjName = DirecObj.Name; 423 if (FileName.Equals(DireObjName)) 424 { 425 UploadFile(fi, DireObjName, "192.168.0.172", "Anonymous", ""); 426 } 427 else 428 { 429 Match m = Regex.Match(files[i].FullName, FileName + "+.*" + DireObjName); 430 //UploadFile(fi, FileName+"/"+DireObjName, "192.168.0.172", "Anonymous", ""); 431 UploadFile(fi, m.ToString(), "192.168.0.172", "Anonymous", ""); 432 } 433 } 434 else 435 { 436 string[] ArrayStr = files[i].FullName.Split('\\'); 437 string finame = files[i].Name; 438 Match m = Regex.Match(files[i].FullName, FileName + "+.*" + finame); 439 //MakeDir(ArrayStr[ArrayStr.Length - 2].ToString() + "/" + finame, "192.168.0.172", "Anonymous", ""); 440 MakeDir(m.ToString(), "192.168.0.172", "Anonymous", ""); 441 GetFileSystemInfos(files[i]); 442 } 443 } 444 } 445 * */ 446 447 /// <summary> 448 /// 判断ftp服务器上该目录是否存在 449 /// </summary> 450 /// <param name="dirName"></param> 451 /// <param name="ftpHostIP"></param> 452 /// <param name="username"></param> 453 /// <param name="password"></param> 454 /// <returns></returns> 455 private bool ftpIsExistsFile(string dirName, string ftpHostIP, string username, string password) 456 { 457 bool flag = true; 458 try 459 { 460 string uri = "ftp://" + ftpHostIP + "/" + dirName; 461 System.Net.FtpWebRequest ftp = GetRequest(uri, username, password); 462 ftp.Method = WebRequestMethods.Ftp.ListDirectory; 463 464 FtpWebResponse response = (FtpWebResponse)ftp.GetResponse(); 465 response.Close(); 466 } 467 catch (Exception) 468 { 469 flag = false; 470 } 471 return flag; 472 } 473 }
2. SFTPHelper
SFTPHelper采用第三方的Tamir.SharpSSH.dll
下载地址: http://www.tamirgal.com/blog/page/SharpSSH.aspx
1 using System; 2 using Tamir.SharpSsh.jsch; 3 using System.Collections; 4 5 6 public class SFTPHelper 7 { 8 private Session m_session; 9 private Channel m_channel; 10 private ChannelSftp m_sftp; 11 12 //host:sftp地址 user：用户名 pwd：密码 13 public SFTPHelper(string host, string user, string pwd) 14 { 15 string[] arr = host.Split(':'); 16 string ip = arr[0]; 17 int port = 22; 18 if (arr.Length > 1) port = Int32.Parse(arr[1]); 19 20 JSch jsch = new JSch(); 21 m_session = jsch.getSession(user, ip, port); 22 MyUserInfo ui = new MyUserInfo(); 23 ui.setPassword(pwd); 24 m_session.setUserInfo(ui); 25 26 } 27 28 //SFTP连接状态 29 public bool Connected { get { return m_session.isConnected(); } } 30 31 //连接SFTP 32 public bool Connect() 33 { 34 try 35 { 36 if (!Connected) 37 { 38 m_session.connect(); 39 m_channel = m_session.openChannel("sftp"); 40 m_channel.connect(); 41 m_sftp = (ChannelSftp)m_channel; 42 } 43 return true; 44 } 45 catch 46 { 47 return false; 48 } 49 } 50 51 //断开SFTP 52 public void Disconnect() 53 { 54 if (Connected) 55 { 56 m_channel.disconnect(); 57 m_session.disconnect(); 58 } 59 } 60 61 //SFTP存放文件 62 public bool Put(string localPath, string remotePath) 63 { 64 try 65 { 66 Tamir.SharpSsh.java.String src = new Tamir.SharpSsh.java.String(localPath); 67 Tamir.SharpSsh.java.String dst = new Tamir.SharpSsh.java.String(remotePath); 68 m_sftp.put(src, dst); 69 return true; 70 } 71 catch 72 { 73 return false; 74 } 75 } 76 77 //SFTP获取文件 78 public bool Get(string remotePath, string localPath) 79 { 80 try 81 { 82 Tamir.SharpSsh.java.String src = new Tamir.SharpSsh.java.String(remotePath); 83 Tamir.SharpSsh.java.String dst = new Tamir.SharpSsh.java.String(localPath); 84 m_sftp.get(src, dst); 85 return true; 86 } 87 catch 88 { 89 return false; 90 } 91 } 92 //删除SFTP文件 93 public bool Delete(string remoteFile) 94 { 95 try 96 { 97 m_sftp.rm(remoteFile); 98 return true; 99 } 100 catch 101 { 102 return false; 103 } 104 } 105 106 //获取SFTP文件列表 107 public ArrayList GetFileList(string remotePath, string fileType) 108 { 109 try 110 { 111 Tamir.SharpSsh.java.util.Vector vvv = m_sftp.ls(remotePath); 112 ArrayList objList = new ArrayList(); 113 foreach (Tamir.SharpSsh.jsch.ChannelSftp.LsEntry qqq in vvv) 114 { 115 string sss = qqq.getFilename(); 116 if (sss.Length > (fileType.Length + 1) && fileType == sss.Substring(sss.Length - fileType.Length)) 117 { objList.Add(sss); } 118 else { continue; } 119 } 120 121 return objList; 122 } 123 catch 124 { 125 return null; 126 } 127 } 128 129 130 //登录验证信息 131 public class MyUserInfo : UserInfo 132 { 133 String passwd; 134 public String getPassword() { return passwd; } 135 public void setPassword(String passwd) { this.passwd = passwd; } 136 137 public String getPassphrase() { return null; } 138 public bool promptPassphrase(String message) { return true; } 139 140 public bool promptPassword(String message) { return true; } 141 public bool promptYesNo(String message) { return true; } 142 public void showMessage(String message) { } 143 } 144 145 146 }
