FtpWebRequest上传、下载文件

接到一个任务，该任务需要从数据支持部的FTP上下载4个文件。
数据支持部的同事给了4个工具分别用下来载这4个文件
因为每天要定时下载，所以加入了计划任务。
这样一来，本可以做为一个任务来完成的东东却硬被分成了4个任务，
这还不是大问题，最大的问题是如果要下载的文件名规则有了变化，我就要分别改这4个工具的配置文件。
这4个工具虽能满足要求，但有点烦琐。看来还是不能偷懒了 - -
自己用FtpWebRequest来实现吧
下载文件

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1. /// <summary>   
2.         /// 下载文件   
3.         /// </summary>   
4.         /// <param name="filename"></param>   
5.         private static void DownLoadFile(string filename)   
6.         {   
7.             FtpWebRequest req = (FtpWebRequest)WebRequest.Create("ftp://" + FtpAddress + "/" + filename);   
8.             req.Method = WebRequestMethods.Ftp.DownloadFile;   
9.             req.UseBinary = true;   
10.             req.UsePassive = true;   
11.             req.Credentials = new NetworkCredential(FtpUid, FtpPwd);   
12.             try  
13.             {   
14.                 using (FtpWebResponse res = (FtpWebResponse)req.GetResponse())   
15.                 {   
16.                     string localfile = Path.Combine(LocalPath, filename);   
17.                     FileStream fs = new FileStream(localfile, FileMode.Create, FileAccess.Write);   
18.                     int buffer = 1024;  //1K缓冲   
19.                     byte[] b = new byte[buffer];   
20.                     int i = 0;   
21.                     Stream stream = res.GetResponseStream();   
22.                     while ((i = stream.Read(b, 0, buffer)) > 0)   
23.                     {   
24.                         fs.Write(b, 0, i);   
25.                     }   
26.                 }   
27.                 Console.WriteLine(filename + " download!");   
28.                 Log(filename + "下载成功");   
29.   
30.             }   
31.             catch (Exception ex)   
32.             {   
33.                 Console.WriteLine(ex.ToString());   
34.                 Log(ex.ToString());   
35.             }   
36.             finally  
37.             {   
38.   
39.             }   
40.         }  

/// <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

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1. /// <summary>   
2.         /// 获取FTP文件列表   
3.         /// </summary>   
4.         /// <returns></returns>   
5.         private static List<String> GetFileList()   
6.         {   
7.             List<string> list = new List<string>();   
8.             FtpWebRequest req = (FtpWebRequest)WebRequest.Create(new Uri("ftp://" + FtpAddress + FtpRemotePath));   
9.             req.Credentials = new NetworkCredential(FtpUid, FtpPwd);   
10.             req.Method = WebRequestMethods.Ftp.ListDirectory;   
11.             req.UseBinary = true;   
12.             req.UsePassive = true;   
13.             try  
14.             {   
15.                 using (FtpWebResponse res = (FtpWebResponse)req.GetResponse())   
16.                 {   
17.                     using (StreamReader sr = new StreamReader(res.GetResponseStream()))   
18.                     {   
19.                         string s;   
20.                         while ((s = sr.ReadLine()) != null)   
21.                         {   
22.   
23.                             list.Add(s);   
24.                         }   
25.                     }   
26.                 }   
27.             }   
28.             catch (Exception ex)   
29.             {   
30.                 Console.WriteLine(ex.ToString());   
31.                 Log("下载文件列表失败:");   
32.                 Log(ex.ToString());   
33.             }   
34.             return list;   
35.   
36.         }  

/// <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

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1. private static void UploadFile(string localFile)   
2.         {   
3.             FileInfo fi = new FileInfo(localFile);   
4.             FileStream fs = fi.OpenRead();   
5.             long length = fs.Length;   
6.             FtpWebRequest req = (FtpWebRequest)WebRequest.Create("ftp://" + FtpAddress + FtpRemotePath + fi.Name);   
7.             req.Credentials = new NetworkCredential(FtpUid, FtpPwd);   
8.             req.Method = WebRequestMethods.Ftp.UploadFile;   
9.             req.UseBinary = true;   
10.             req.ContentLength = length;   
11.             req.Timeout = 10 * 1000;   
12.             try  
13.             {   
14.                 Stream stream = req.GetRequestStream();   
15.                    
16.                 int BufferLength = 2048; //2K   
17.                 byte[] b = new byte[BufferLength];   
18.                 int i;   
19.                 while ((i = fs.Read(b, 0, BufferLength)) > 0)   
20.                 {   
21.                     stream.Write(b, 0, i);   
22.                 }   
23.                 stream.Close();   
24.                 stream.Dispose();   
25.                    
26.             }   
27.             catch (Exception ex)   
28.             {   
29.                 Console.WriteLine(ex.ToString());   
30.             }   
31.                
32.         }