asp.net实现FTP客户端

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原作者: [db:作者] 来自: [db:来源] 收藏邀请

下载文件

/// <summary>
/// 下载文件
/// </summary>
/// <param name="filename"></param>
private static void DownLoadFile(string filename)
{
FtpWebRequest req = (FtpWebRequest)WebRequest.Create("ftp://" + FtpAddress + "/" + filename);
req.Method = WebRequestMethods.Ftp.DownloadFile;
req.UseBinary = true;
req.UsePassive = true;
req.Credentials = new NetworkCredential(FtpUid, FtpPwd);
try
{
using (FtpWebResponse res = (FtpWebResponse)req.GetResponse())
{
string localfile = Path.Combine(LocalPath, filename);
FileStream fs = new FileStream(localfile, FileMode.Create, FileAccess.Write);
int buffer = 1024; //1K缓冲
byte[] b = new byte[buffer];
int i = 0;
Stream stream = res.GetResponseStream();
while ((i = stream.Read(b, 0, buffer)) > 0)
{
fs.Write(b, 0, i);
}
}
Console.WriteLine(filename + " download!");
Log(filename + "下载成功");
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
Log(ex.ToString());
}
finally
{
}
}

/// <summary>         /// 下载文件         /// </summary>         /// <param name="filename"></param>         private static void DownLoadFile(string filename)         {             FtpWebRequest req = (FtpWebRequest)WebRequest.Create("ftp://" + FtpAddress + "/" + filename);             req.Method = WebRequestMethods.Ftp.DownloadFile;             req.UseBinary = true;             req.UsePassive = true;             req.Credentials = new NetworkCredential(FtpUid, FtpPwd);             try             {                 using (FtpWebResponse res = (FtpWebResponse)req.GetResponse())                 {                     string localfile = Path.Combine(LocalPath, filename);                     FileStream fs = new FileStream(localfile, FileMode.Create, FileAccess.Write);                     int buffer = 1024;  //1K缓冲                     byte[] b = new byte[buffer];                     int i = 0;                     Stream stream = res.GetResponseStream();                     while ((i = stream.Read(b, 0, buffer)) > 0)                     {                         fs.Write(b, 0, i);                     }                 }                 Console.WriteLine(filename + " download!");                 Log(filename + "下载成功");              }             catch (Exception ex)             {                 Console.WriteLine(ex.ToString());                 Log(ex.ToString());             }             finally             {              }         }

获取文件列表

/// <summary>
/// 获取FTP文件列表
/// </summary>
/// <returns></returns>
private static List<String> GetFileList()
{
List<string> list = new List<string>();
FtpWebRequest req = (FtpWebRequest)WebRequest.Create(new Uri("ftp://" + FtpAddress + FtpRemotePath));
req.Credentials = new NetworkCredential(FtpUid, FtpPwd);
req.Method = WebRequestMethods.Ftp.ListDirectory;
req.UseBinary = true;
req.UsePassive = true;
try
{
using (FtpWebResponse res = (FtpWebResponse)req.GetResponse())
{
using (StreamReader sr = new StreamReader(res.GetResponseStream()))
{
string s;
while ((s = sr.ReadLine()) != null)
{
list.Add(s);
}
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
Log("下载文件列表失败:");
Log(ex.ToString());
}
return list;
}

/// <summary>         /// 获取FTP文件列表         /// </summary>         /// <returns></returns>         private static List<String> GetFileList()         {             List<string> list = new List<string>();             FtpWebRequest req = (FtpWebRequest)WebRequest.Create(new Uri("ftp://" + FtpAddress + FtpRemotePath));             req.Credentials = new NetworkCredential(FtpUid, FtpPwd);             req.Method = WebRequestMethods.Ftp.ListDirectory;             req.UseBinary = true;             req.UsePassive = true;             try             {                 using (FtpWebResponse res = (FtpWebResponse)req.GetResponse())                 {                     using (StreamReader sr = new StreamReader(res.GetResponseStream()))                     {                         string s;                         while ((s = sr.ReadLine()) != null)                         {                              list.Add(s);                         }                     }                 }             }             catch (Exception ex)             {                 Console.WriteLine(ex.ToString());                 Log("下载文件列表失败:");                 Log(ex.ToString());             }             return list;          }

上传文件

private static void UploadFile(string localFile)
{
FileInfo fi = new FileInfo(localFile);
FileStream fs = fi.OpenRead();
long length = fs.Length;
FtpWebRequest req = (FtpWebRequest)WebRequest.Create("ftp://" + FtpAddress + FtpRemotePath + fi.Name);
req.Credentials = new NetworkCredential(FtpUid, FtpPwd);
req.Method = WebRequestMethods.Ftp.UploadFile;
req.UseBinary = true;
req.ContentLength = length;
req.Timeout = 10 * 1000;
try
{
Stream stream = req.GetRequestStream();
int BufferLength = 2048; //2K
byte[] b = new byte[BufferLength];
int i;
while ((i = fs.Read(b, 0, BufferLength)) > 0)
{
stream.Write(b, 0, i);
}
stream.Close();
stream.Dispose();
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}