/// <summary>
/// 取服务器ftp根目录下的最新文件列表
/// </summary>
/// <param name="ip"></param>
/// <param name="port"></param>
/// <param name="uid"></param>
/// <param name="password"></param>
/// <param name="oldlist">待删除的文件名称</param>
/// <returns></returns>
public static List <BakInfo> GetNewFileList(string ip, int port, string uid, string password, ref List <BakInfo> oldlist)
{
List <BakInfo> list = new List <BakInfo>();
List <string> files = GetFileList(ip, port, uid, password, "", WebRequestMethods.Ftp.ListDirectoryDetails);
oldlist = new List <BakInfo>();
List <string> dir = new List <string>();
///列出根目录下的所有目录
if (files != null)
{
foreach (string s in files)
{
if (s.Substring(0, 2).Equals("dr"))
{
string temp = s.Substring(s.LastIndexOf(' ') + 1);
dir.Add(temp);
}
}
}
///
///分别取出目录下的最新文件和待删除的文件
///
if (dir.Count > 0)
{
foreach (string s in dir)
{
List <string> tempfiles = GetFileList(ip, port, uid, password, s);
if (tempfiles != null && tempfiles.Count > 0)
{
for (int i = 0; i < tempfiles.Count; i++)
{
BakInfo info = new BakInfo();
info.path = s;
info.filename = tempfiles[i];
if (i == tempfiles.Count - 1)
{
list.Add(info);
}
else
{
oldlist.Add(info);
}
}
}
}
}
return(list);
}
/// <summary>
/// 删除服务器上的指定文件
/// </summary>
/// <param name="ip"></param>
/// <param name="port"></param>
/// <param name="uid"></param>
/// <param name="password"></param>
/// <param name="info"></param>
/// <returns></returns>
public static void DeleteFile(string ip, int port, string uid, string password, BakInfo info)
{
FtpWebResponse response = null;
try
{
Connect(ip, port, uid, password, info.path, info.filename);
ftp.Method = WebRequestMethods.Ftp.DeleteFile;
response = (FtpWebResponse)ftp.GetResponse();
}
catch (Exception ex)
{
Utils.Log(ex.Message);
}
finally
{
if (response != null)
{
response.Close();
}
}
}
/// <summary>
/// 下载文件保存到本地目录..
/// </summary>
/// <param name="ip"></param>
/// <param name="port"></param>
/// <param name="uid"></param>
/// <param name="password"></param>
/// <param name="info"></param>
/// <returns></returns>
public static int DownLoadFile(string ip, int port, string uid, string password, BakInfo info)
{
FtpWebResponse ftpWebResponse = null;
Stream ftpResponseStream = null;
FileStream outputStream = null;
int status = 0; //失败的状态
try
{
string localroot = Utils.GetConfigInfo().localroot;
if (string.IsNullOrEmpty(localroot))
{
return(-1);
}
string localpath = localroot + info.path;
if (!Directory.Exists(localpath))
{
Directory.CreateDirectory(localpath);
}
///如果本地文件已经存在，删除本地文件，然后重新下载..
if (File.Exists(localpath + "\\" + info.filename))
{
FileInfo file = new FileInfo(localpath + "\\" + info.filename);
long remotesize = GetFileSize(ip, port, uid, password, info);
long localsize = file.Length;
///下载不完整的情况...
if (remotesize != localsize)
{
File.Delete(localpath + "\\" + info.filename);
}
else
{
///
///本地已经有最新文件，并且和服务器上大小一样
///返回
///
status = 8;
return(status);
}
}
outputStream = new FileStream(localpath + "\\" + info.filename, FileMode.Create);
Connect(ip, port, uid, password, info.path, info.filename);
ftp.Method = WebRequestMethods.Ftp.DownloadFile;
ftpWebResponse = (FtpWebResponse)ftp.GetResponse();
ftpResponseStream = ftpWebResponse.GetResponseStream();
long contentLength = ftpWebResponse.ContentLength;
int bufferSize = 2048;
byte[] buffer = new byte[bufferSize];
int readCount;
readCount = ftpResponseStream.Read(buffer, 0, bufferSize);
while (readCount > 0)
{
outputStream.Write(buffer, 0, readCount);
readCount = ftpResponseStream.Read(buffer, 0, bufferSize);
}
status = 9; //下载成功
}
catch (Exception ex)
{
Utils.Log(ex.Message);
}
finally
{
if (outputStream != null)
{
outputStream.Close();
}
if (ftpResponseStream != null)
{
ftpResponseStream.Close();
}
if (ftpWebResponse != null)
{
ftpWebResponse.Close();
}
}
return(status);
}
/// <summary>
/// 获取ftp server上指定文件的大小..
/// </summary>
/// <param name="ip"></param>
/// <param name="port"></param>
/// <param name="uid"></param>
/// <param name="password"></param>
/// <param name="info"></param>
/// <returns></returns>
public static long GetFileSize(string ip, int port, string uid, string password, BakInfo info)
{
FtpWebResponse response = null;
long size = 0;
try
{
Connect(ip, port, uid, password, info.path, info.filename);
ftp.Method = WebRequestMethods.Ftp.GetFileSize;
response = (FtpWebResponse)ftp.GetResponse();
size = response.ContentLength;
}
catch (Exception ex)
{
Utils.Log(ex.Message);
}
finally
{
if (response != null)
{
response.Close();
}
}
return(size);
}
