Ftp服务器文件操作

  1 using System;
  2 using System.IO;
  3 using System.Net;
  4 using System.Collections.Generic;
  5 
  6 public class FtpUtility
  7 {
  8     /// <summary>
  9     /// 获取Ftp服务器上文件列表
 10     /// </summary>
 11     /// <param name="server">Ftp服务器IP</param>
 12     /// <param name="userName">用户名</param>
 13     /// <param name="password">口令</param>
 14     /// <returns>返回一个文件列表泛型集合</returns>
 15     public static List<string> GetFiles(string server, string userName, string password)
 16     {
 17         List<string> fileList = new List<string>();
 18 
 19         try
 20         {
 21             FtpWebRequest ftpRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri(server));//"ftp://127.0.0.1/book"
 22 
 23             ftpRequest.UseBinary = true;
 24             ftpRequest.Credentials = new NetworkCredential(userName, password);
 25 
 26             ftpRequest.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
 27 
 28             WebResponse response = ftpRequest.GetResponse();
 29 
 30             StreamReader sr = new StreamReader(response.GetResponseStream());
 31 
 32             string line = sr.ReadLine();
 33 
 34             while (line != null)
 35             {
 36                 fileList.Add(line);
 37                 line = sr.ReadLine();
 38             }
 39 
 40             sr.Close();
 41             response.Close();
 42         }
 43         catch
 44         {
 45 
 46         }
 47 
 48         return fileList;
 49     }
 50 
 51     /// <summary>
 52     /// 下载Ftp服务器上指定文件
 53     /// </summary>
 54     /// <param name="server">文件路径</param>
 55     /// <param name="userName">用户名</param>
 56     /// <param name="password">口令</param>
 57     /// <returns>返回一个布尔值类型的操作结果。true为成功，false为失败。</returns>
 58     public static bool DownloadFile(string fileName, string userName, string password)
 59     {
 60         try
 61         {
 62             //创建输出文件流对象
 63             FileStream outputStream = new FileStream(fileName, FileMode.Create);
 64             //使用指定的Uri对象初始化Ftp客户端
 65             FtpWebRequest ftpRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri(fileName));//"ftp://127.0.0.1/book/setup.exe"
 66             //指定发送到服务器端的命令为文件下载
 67             ftpRequest.Method = WebRequestMethods.Ftp.DownloadFile;
 68             //指定文件传输的数据类型是否启用二进制
 69             ftpRequest.KeepAlive = true;
 70             ftpRequest.UseBinary = true;
 71             //指定连接到服务器端的用户凭证
 72             ftpRequest.Credentials = new NetworkCredential(userName, password);
 73             //返回服务器端的响应
 74             FtpWebResponse response = (FtpWebResponse)ftpRequest.GetResponse();
 75 
 76             //创建服务器上的响应流
 77             Stream ftpStream = response.GetResponseStream();
 78 
 79 
 80             //获取从服务器上接受数据的长度
 81             long cl = response.ContentLength;
 82 
 83             //设置缓冲区大小
 84             int bufferSize = 2048;
 85 
 86             //创建缓冲区
 87             byte[] buffer = new byte[bufferSize];
 88 
 89             //从响应流中读取的数据的长度
 90             int readCount = ftpStream.Read(buffer, 0, bufferSize);
 91 
 92             while (readCount > 0)
 93             {
 94                 outputStream.Write(buffer, 0, readCount);
 95 
 96                 readCount = ftpStream.Read(buffer, 0, bufferSize);
 97             }
 98 
 99             ftpStream.Close();
100 
101             outputStream.Close();
102 
103             response.Close();
104             return true;
105         }
106         catch
107         {
108             return false;
109         }
110     }
111 
112     /// <summary>
113     /// 删除Ftp服务器上指定文件
114     /// </summary>
115     /// <param name="server">文件路径</param>
116     /// <param name="userName">用户名</param>
117     /// <param name="password">口令</param>
118     /// <returns>返回一个布尔值类型的操作结果。true为成功，false为失败。</returns>
119     public static bool DeleteFile(string fileName, string userName, string password)
120     {
121         try
122         {
123             //使用指定的Uri对象初始化Ftp客户端
124             FtpWebRequest ftpRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri(fileName));//"ftp://127.0.0.1/book/setup.exe"
125             //指定发送到服务器端的命令为文件下载
126             ftpRequest.Method = WebRequestMethods.Ftp.DeleteFile;
127             //指定文件传输的数据类型是否启用二进制
128             //reqFtp.UseBinary = true;
129             //指定连接到服务器端的用户凭证
130             ftpRequest.Credentials = new NetworkCredential(userName, password);
131             //返回服务器端的响应
132             FtpWebResponse response = (FtpWebResponse)ftpRequest.GetResponse();
133 
134             response.Close();
135             return true;
136         }
137         catch
138         {
139             return false;
140         }
141     }
142 }
143