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(转)C#对FTP的操作(上传,下载,重命名文件,删除文件,文件存在检查)

(转)C#对FTP的操作(上传,下载,重命名文件,删除文件,文件存在检查)
  1. 转自:http://blog.csdn.net/hejialin666/article/details/3522815
  2.   1 using System;
      2 using System.Collections.Generic;
      3 using System.Text;
      4 using System.Net;
      5 using System.Data;
      6 using System.IO;
      7 using System.ComponentModel;
      8 namespace Common
      9 {
     10     public class FTPClient
     11     {
     12         private string ftpServerIP = String.Empty;
     13         private string ftpUser = String.Empty;
     14         private string ftpPassword = String.Empty;
     15         private string ftpRootURL = String.Empty;        
     16         public FTPClient(string url, string userid,string password)
     17         {
     18             this.ftpServerIP = ftp的IP地址;
     19             this.ftpUser = 用户名;
     20             this.ftpPassword = 密码;
     21             this.ftpRootURL = "ftp://" + url + "/";
     22         }
     23         /// <summary>
     24         /// 上传
     25         /// </summary>
     26         /// <param name="localFile">本地文件绝对路径</param>
     27         /// <param name="ftpPath">上传到ftp的路径</param>
     28         /// <param name="ftpFileName">上传到ftp的文件名</param>
     29         public bool fileUpload(FileInfo localFile, string ftpPath, string ftpFileName)
     30         {
     31             bool success = false;
     32             FtpWebRequest ftpWebRequest = null;
     33             FileStream localFileStream = null;
     34             Stream requestStream = null;
     35             try
     36             {
     37                 string uri = ftpRootURL + ftpPath + ftpFileName;
     38                 ftpWebRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
     39                 ftpWebRequest.Credentials = new NetworkCredential(ftpUser, ftpPassword);
     40                 ftpWebRequest.UseBinary = true;
     41                 ftpWebRequest.KeepAlive = false;
     42                 ftpWebRequest.Method = WebRequestMethods.Ftp.UploadFile;
     43                 ftpWebRequest.ContentLength = localFile.Length;
     44                 int buffLength = 2048;
     45                 byte[] buff = new byte[buffLength];
     46                 int contentLen;
     47                 localFileStream = localFile.OpenRead();
     48                 requestStream = ftpWebRequest.GetRequestStream();
     49                 contentLen = localFileStream.Read(buff, 0, buffLength);
     50                 while (contentLen != 0)
     51                 {
     52                     requestStream.Write(buff, 0, contentLen);
     53                     contentLen = localFileStream.Read(buff, 0, buffLength);
     54                 }
     55                 success = true;
     56             }
     57             catch (Exception)
     58             {
     59                 success = false;
     60             }
     61             finally
     62             { 
     63                 if (requestStream != null)
     64                 {
     65                     requestStream.Close();
     66                 }
     67                 if (localFileStream != null)
     68                 {
     69                     localFileStream.Close();
     70                 }
     71             }
     72             return success;
     73         }
     74         /// <summary>
     75         /// 上传文件
     76         /// </summary>
     77         /// <param name="localPath">本地文件地址(没有文件名)</param>
     78         /// <param name="localFileName">本地文件名</param>
     79         /// <param name="ftpPath">上传到ftp的路径</param>
     80         /// <param name="ftpFileName">上传到ftp的文件名</param>
     81         public bool fileUpload(string localPath, string localFileName, string ftpPath, string ftpFileName)
     82         {
     83             bool success = false;
     84             try
     85             {
     86                 FileInfo localFile = new FileInfo(localPath + localFileName);
     87                 if (localFile.Exists)
     88                 {
     89                     success = fileUpload(localFile, ftpPath, ftpFileName);
     90                 }
     91                 else
     92                 {
     93                     success = false;
     94                 }
     95             }
     96             catch (Exception)
     97             {
     98                 success = false;
     99             }
    100             return success;
    101         }
    102         /// <summary>
    103         /// 下载文件
    104         /// </summary>
    105         /// <param name="localPath">本地文件地址(没有文件名)</param>
    106         /// <param name="localFileName">本地文件名</param>
    107         /// <param name="ftpPath">下载的ftp的路径</param>
    108         /// <param name="ftpFileName">下载的ftp的文件名</param>
    109         public bool fileDownload(string localPath, string localFileName, string ftpPath, string ftpFileName)
    110         {
    111             bool success = false;
    112             FtpWebRequest ftpWebRequest = null;
    113             FtpWebResponse ftpWebResponse = null;
    114             Stream ftpResponseStream = null;
    115             FileStream outputStream = null;
    116             try
    117             {
    118                 outputStream = new FileStream(localPath + localFileName, FileMode.Create);
    119                 string uri = ftpRootURL + ftpPath + ftpFileName;
    120                 ftpWebRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
    121                 ftpWebRequest.Credentials = new NetworkCredential(ftpUser, ftpPassword);
    122                 ftpWebRequest.UseBinary = true;
    123                 ftpWebRequest.Method = WebRequestMethods.Ftp.DownloadFile;
    124                 ftpWebResponse = (FtpWebResponse)ftpWebRequest.GetResponse();
    125                 ftpResponseStream = ftpWebResponse.GetResponseStream();
    126                 long contentLength = ftpWebResponse.ContentLength;
    127                 int bufferSize = 2048;
    128                 byte[] buffer = new byte[bufferSize];
    129                 int readCount;
    130                 readCount = ftpResponseStream.Read(buffer, 0, bufferSize);
    131                 while (readCount > 0)
    132                 {
    133                     outputStream.Write(buffer, 0, readCount);
    134                     readCount = ftpResponseStream.Read(buffer, 0, bufferSize);
    135                 }
    136                 success = true;
    137             }
    138             catch (Exception)
    139             {
    140                 success = false;
    141             }
    142             finally
    143             {
    144                 if (outputStream != null)
    145                 {
    146                     outputStream.Close();
    147                 }
    148                 if (ftpResponseStream != null)
    149                 {
    150                     ftpResponseStream.Close();
    151                 }
    152                 if (ftpWebResponse != null)
    153                 {
    154                     ftpWebResponse.Close();
    155                 }
    156             }
    157             return success;
    158         }
    159         /// <summary>
    160         /// 重命名
    161         /// </summary>
    162         /// <param name="ftpPath">ftp文件路径</param>
    163         /// <param name="currentFilename"></param>
    164         /// <param name="newFilename"></param>
    165         public bool fileRename(string ftpPath, string currentFileName, string newFileName)
    166         {
    167             bool success = false;
    168             FtpWebRequest ftpWebRequest = null;
    169             FtpWebResponse ftpWebResponse = null;
    170             Stream ftpResponseStream = null;
    171             try
    172             {
    173                 string uri = ftpRootURL + ftpPath + currentFileName;
    174                 ftpWebRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
    175                 ftpWebRequest.Credentials = new NetworkCredential(ftpUser, ftpPassword);
    176                 ftpWebRequest.UseBinary = true;
    177                 ftpWebRequest.Method = WebRequestMethods.Ftp.Rename;
    178                 ftpWebRequest.RenameTo = newFileName;
    179                 
    180                 ftpWebResponse = (FtpWebResponse)ftpWebRequest.GetResponse();
    181                 ftpResponseStream = ftpWebResponse.GetResponseStream();
    182                
    183             }
    184             catch (Exception)
    185             {
    186                 success = false;
    187             }
    188             finally
    189             {
    190                 if (ftpResponseStream != null)
    191                 {
    192                     ftpResponseStream.Close();
    193                 }
    194                 if (ftpWebResponse != null)
    195                 {
    196                     ftpWebResponse.Close();
    197                 }
    198             }
    199             return success;
    200         }
    201         /// <summary>
    202         /// 消除文件
    203         /// </summary>
    204         /// <param name="filePath"></param>
    205         public bool fileDelete(string ftpPath, string ftpName)
    206         {
    207             bool success = false;
    208             FtpWebRequest ftpWebRequest = null;
    209             FtpWebResponse ftpWebResponse = null;
    210             Stream ftpResponseStream = null;
    211             StreamReader streamReader = null;
    212             try
    213             {
    214                 string uri = ftpRootURL + ftpPath + ftpName;
    215                 ftpWebRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
    216                 ftpWebRequest.Credentials = new NetworkCredential(ftpUser, ftpPassword);
    217                 ftpWebRequest.KeepAlive = false;
    218                 ftpWebRequest.Method = WebRequestMethods.Ftp.DeleteFile;
    219                 ftpWebResponse = (FtpWebResponse)ftpWebRequest.GetResponse();
    220                 long size = ftpWebResponse.ContentLength;
    221                 ftpResponseStream = ftpWebResponse.GetResponseStream();
    222                 streamReader = new StreamReader(ftpResponseStream);
    223                 string result = String.Empty;
    224                 result = streamReader.ReadToEnd();
    225                
    226                 success = true;
    227             }
    228             catch (Exception)
    229             {
    230                 success = false;
    231             }
    232             finally
    233             {
    234                 if (streamReader != null)
    235                 {
    236                     streamReader.Close();
    237                 }
    238                 if (ftpResponseStream != null)
    239                 {
    240                     ftpResponseStream.Close();
    241                 }
    242                 if (ftpWebResponse != null)
    243                 {
    244                     ftpWebResponse.Close();
    245                 }
    246             }
    247             return success;
    248         }
    249         /// <summary>
    250         /// 文件存在检查
    251         /// </summary>
    252         /// <param name="ftpPath"></param>
    253         /// <param name="ftpName"></param>
    254         /// <returns></returns>
    255         public bool fileCheckExist(string ftpPath, string ftpName)
    256         {
    257             bool success = false;
    258             FtpWebRequest ftpWebRequest = null;
    259             WebResponse webResponse = null;            
    260             StreamReader reader = null;
    261             try
    262             {
    263                 string url = ftpRootURL + ftpPath;                
    264                 
    265                 ftpWebRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri(url));
    266                 ftpWebRequest.Credentials = new NetworkCredential(ftpUser, ftpPassword);
    267                 ftpWebRequest.Method = WebRequestMethods.Ftp.ListDirectory;
    268                 ftpWebRequest.KeepAlive = false;
    269                 webResponse = ftpWebRequest.GetResponse();
    270                 reader = new StreamReader(webResponse.GetResponseStream());
    271                 string line = reader.ReadLine();
    272                 while (line != null)
    273                 {
    274                     if (line == ftpName)
    275                     {
    276                         success = true;
    277                         break;
    278                     }
    279                     line = reader.ReadLine();
    280                 }
    281             }
    282             catch (Exception)
    283             {
    284                 success = false;
    285             }
    286             finally
    287             {
    288                 if (reader != null)
    289                 {
    290                     reader.Close();
    291                 }
    292                 if (webResponse != null)
    293                 {
    294                     webResponse.Close();
    295                 }
    296             }
    297             return success;
    298         }
    299     }
    300 }
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转载于:https://www.cnblogs.com/GS-Crazy/p/3620704.html

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