/// <summary>
/// 获得目录和文件列表
/// </summary>
/// <param name="path">上级目录</param>
public List <FileDirectoryInfo> GetFileFolders(string path)
{
List <FileDirectoryInfo> directorys = new List <FileDirectoryInfo>();
FtpWebRequest reqFTP = CreateFtpConnection(path);
reqFTP.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
reqFTP.KeepAlive = false;
WebResponse response = null;
try
{
response = reqFTP.GetResponse();
}
catch
{
//patch：当前连接或最近一次连接的“KeepAlive=false”时，ftp可能返回501错误。出错后再尝试一次。
reqFTP = CreateFtpConnection(path);
reqFTP.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
reqFTP.KeepAlive = false;
response = reqFTP.GetResponse();
}
Encoding encoding = Encoding.Default;
if (this._decodeType == DecodeType.UTF8)
{
encoding = Encoding.UTF8;
}
StreamReader reader = new StreamReader(response.GetResponseStream(), encoding);
string line = reader.ReadLine();
FileListStyle fileListStyle = FileListStyle.Unknown;
if (line != null)
{
fileListStyle = GetFileListStyle(line);
}
while (line != null)
{
fileListStyle = GetFileListStyle(line);
FileDirectoryInfo temp = ConvertToDirectory(line, fileListStyle);
if (temp != null)
{
if (!temp.DisplayName.StartsWith("."))
{
directorys.Add(temp);
}
}
line = reader.ReadLine();
}
reader.Close();
response.Close();
return(directorys);
}
/// <summary>
/// 将文件详细信息字符串转换为文件类
/// </summary>
private FileDirectoryInfo ConvertToDirectory(string fileName, FileListStyle style)
{
Match m = GetMatchingRegex(fileName);
if (m == null)
{
return(null);
}
FileDirectoryInfo result = new FileDirectoryInfo();
result.DisplayName = m.Groups["name"].Value;
if (m.Groups["size"].Value != string.Empty)
{
result.FileSize = long.Parse(m.Groups["size"].Value);
}
if (m.Groups["timestamp"].Value != string.Empty)
{
DateTimeFormatInfo formatProvider = new CultureInfo("en-US", false).DateTimeFormat;
try
{
string dateStr = m.Groups["timestamp"].Value;
switch (style)
{
case FileListStyle.UnixStyle:
//example1：“Jan 18 2009”；example2：“Jan 11 12:29”
if (dateStr.IndexOf(":") != -1)
{
dateStr = string.Format("{0} {1}", DateTime.Now.Year, dateStr);
}
result.LastEditTime = DateTime.Parse(dateStr, formatProvider);
//距离当前时间（以文件服务器时间为参考点）半年以内的时间不带年份
if (result.LastEditTime.Month > DateTime.Now.Month)
{
result.LastEditTime = result.LastEditTime.AddYears(-1);
}
break;
case FileListStyle.WindowsStyle:
//example3：“01-11-11 06:23PM”
case FileListStyle.Unknown:
default:
result.LastEditTime = DateTime.Parse(dateStr, formatProvider);
break;
}
}
catch (Exception ex)
{
throw new ApplicationException(string.Format("获取文件修改时间出错[{0}]", fileName), ex);
}
}
string _dir = m.Groups["dir"].Value;
if (_dir != "" && _dir != "-")
{
result.FileInfoType = DirectoryEntryTypes.目录;
}
else
{
result.FileInfoType = DirectoryEntryTypes.文件;
}
return(result);
}
