C# ftp判断目录是否存在，不存在则自动创建文件夹
/// <summary>
/// 判断文件的目录是否存,不存则创建
/// </summary>
/// <param name="destFilePath">本地文件目录</param>
public void CheckDirectoryAndMakeMyWilson3(string destFilePath)
{
string fullDir = destFilePath.IndexOf(':') > 0 ? destFilePath.Substring(destFilePath.IndexOf(':') + 1) : destFilePath;
fullDir = fullDir.Replace('\\', '/');
string[] dirs = fullDir.Split('/');//解析出路径上所有的文件名
string curDir = "/";
for (int i = 0; i < dirs.Length; i++)//循环查询每一个文件夹
{
if (dirs[i] == "") continue;
string dir = dirs[i];
//如果是以/开始的路径,第一个为空
if (dir != null && dir.Length > 0)
{
try
{
CheckDirectoryAndMakeMyWilson2(curDir, dir);
curDir += dir + "/";
}
catch (Exception)
{ }
}
}
}
public void CheckDirectoryAndMakeMyWilson2(string rootDir, string remoteDirName)
{
if (!DirectoryExist(rootDir, remoteDirName))//判断当前目录下子目录是否存在
MakeDir(rootDir + "\\" + remoteDirName);
}
public bool DirectoryExist(string rootDir, string RemoteDirectoryName)
{
string[] dirList = GetDirectoryList(rootDir);//获取子目录
if (dirList.Length > 0)
{
foreach (string str in dirList)
{
if (str.Trim() == RemoteDirectoryName.Trim())
{
return true;
}
}
}
return false;
}
public string[] GetDirectoryList(string dirName)
{
string[] drectory = GetFilesDetailList(dirName);
List<string> strList = new List<string>();
if (drectory.Length > 0)
{
foreach (string str in drectory)
{
if (str.Trim().Length == 0)
continue;
//会有两种格式的详细信息返回
//一种包含<DIR>
//一种第一个字符串是drwxerwxx这样的权限操作符号
//现在写代码包容两种格式的字符串
if (str.Trim().Contains("<DIR>"))
{
strList.Add(str.Substring(39).Trim());
}
else
{
if (str.Trim().Substring(0, 1).ToUpper() == "D")
{
strList.Add(str.Substring(55).Trim());
}
}
}
}
return strList.ToArray();
}
定义ftp地址：private string ftpServerIP = "IP:端口";
/// <summary>
/// 获得文件明晰
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
public string[] GetFilesDetailList(string path)
{
return GetFileList("ftp://" + ftpServerIP + "/" + path, WebRequestMethods.Ftp.ListDirectoryDetails);
}
//都调用这个
//上面的代码示例了如何从ftp服务器上获得文件列表
private string[] GetFileList(string path, string WRMethods)
{
StringBuilder result = new StringBuilder();
try
{
Connect(path);//建立FTP连接
reqFTP.Method = WRMethods;
reqFTP.KeepAlive = false;
WebResponse response = reqFTP.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream(), System.Text.Encoding.Default);//中文文件名
string line = reader.ReadLine();
while (line != null)
{
result.Append(line);
result.Append("\n");
line = reader.ReadLine();
}
// to remove the trailing '' ''
if (result.ToString() != "")
{
result.Remove(result.ToString().LastIndexOf("\n"), 1);
}
reader.Close();
response.Close();
return result.ToString().Split('\n');
}
catch (Exception ex)
{
throw new Exception("获取文件列表失败。原因： " + ex.Message);
}
}
//连接ftp
private void Connect(String path)
{
// 根据uri创建FtpWebRequest对象
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(path));
// 指定数据传输类型
reqFTP.Method = System.Net.WebRequestMethods.Ftp.UploadFile;
reqFTP.UseBinary = true;
reqFTP.UsePassive = false;//表示连接类型为主动模式
// ftp用户名和密码
reqFTP.Credentials = new NetworkCredential(FTPUSERID, FTPPASSWORD);
}
/// <summary>
/// 创建目录
/// </summary>
/// <param name="dirName"></param>
public void MakeDir(string dirName)
{
try
{
string uri = "ftp://" + ftpServerIP + "/" + dirName;
Connect(uri);//连接
reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;
reqFTP.KeepAlive = false;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
response.Close();
}
catch (Exception ex)
{
throw new Exception("创建文件失败，原因: " + ex.Message);
}
}
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