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
/// <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;
}
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());
}
}
记录一下
呵呵，批处理可以搞定吧。^_^