/// <summary>
/// 取得指定目录在Ftp服务器上得状态.
/// </summary>
/// <returns>目录在服务器上得状态.</returns>
/// <param name="iParentUrl">上一层URL.</param>
/// <param name="iTargetDir">目标目录.</param>
/// <param name="iAccountId">账户.</param>
/// <param name="iPwd">密码.</param>
private TDirState GetDirStateOnFtpServer(
string iParentUrl, string iTargetDir,
string iAccountId, string iPwd)
{
FtpWebRequest ftpRequest = null;
FtpWebResponse response = null;
StreamReader reader = null;
TDirState state = TDirState.None;
try
{
Uri targetURI = new Uri(iParentUrl);
ftpRequest = (FtpWebRequest)FtpWebRequest.Create(targetURI);
ftpRequest.Credentials = new NetworkCredential(iAccountId, iPwd);
ftpRequest.KeepAlive = false;
ftpRequest.Method = WebRequestMethods.Ftp.ListDirectory;
ftpRequest.UseBinary = true;
response = ftpRequest.GetResponse() as FtpWebResponse;
reader = new StreamReader(
response.GetResponseStream(), System.Text.Encoding.Default);
string line = reader.ReadLine();
state = TDirState.NotExist;
// 循环遍历内容
while (line != null)
{
if (line.Equals(iTargetDir) == true)
{
state = TDirState.Exist;
break;
}
line = reader.ReadLine();
}
if (TDirState.NotExist == state)
{
UtilsLog.Info("GetDirStateOnFtpServer", "State:{0} ParentUrl:{1} TargetDir:{2}",
state.ToString(), iParentUrl, iTargetDir);
}
}
catch (WebException exp)
{
UtilsLog.Exception("GetDirStateOnFtpServer", "ParentUrl:{0} TargetDir:{1} \n WebException: \n {2}",
iParentUrl, iTargetDir, exp.Message);
state = TDirState.Exception;
}
catch (IOException exp)
{
UtilsLog.Exception("GetDirStateOnFtpServer", "ParentUrl:{0} TargetDir:{1} \n IOException: \n {2}",
iParentUrl, iTargetDir, exp.Message);
state = TDirState.Exception;
}
catch (Exception exp)
{
UtilsLog.Exception("GetDirStateOnFtpServer", "ParentUrl:{0} TargetDir:{1} \n Exception: \n {2}",
iParentUrl, iTargetDir, exp.Message);
state = TDirState.Exception;
}
finally
{
if (reader != null)
{
reader.Close();
}
if (response != null)
{
response.Close();
}
}
return(state);
}
