c#上传Ftp文件，创建文件夹

 

  FtpWebRequest reqFTP;

public void Upload(string filename)
{
FileInfo fileInf = new FileInfo(filename);

string localFile = ftpFilePath + "/" + DateTime.Now.Year;

if (!Check(localFile))//判断是否存在该文件夹
{
FtpMakeDir(localFile);//创建文件夹 因为一次只能创建一个文件夹，我想创建三层所以就写了三个判断
}
localFile = localFile + "/" + DateTime.Now.Month;
if (!Check(localFile))//判断是否存在该文件夹
{
FtpMakeDir(localFile);//创建文件夹
}
localFile = localFile + "/" + DateTime.Now.Day;
if (!Check(localFile))//判断是否存在该文件夹
{
FtpMakeDir(localFile);//创建文件夹
}
string uri = "ftp://" + ftpServerIP + "/" + localFile +"/"+ fileInf.Name;
Connect(uri);//连接
// 默认为true，连接不会被关闭
// 在一个命令之后被执行
reqFTP.KeepAlive = false;
// 指定执行什么命令
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
// 上传文件时通知服务器文件的大小
reqFTP.ContentLength = fileInf.Length;
// 缓冲大小设置为kb
int buffLength = 2048;
byte[] buff = new byte[buffLength];

int contentLen;
// 打开一个文件流(System.IO.FileStream) 去读上传的文件
FileStream fs = fileInf.OpenRead();

try
{
// 把上传的文件写入流
Stream strm = reqFTP.GetRequestStream();
// 每次读文件流的kb
contentLen = fs.Read(buff, 0, buffLength);
// 流内容没有结束
while (contentLen != 0)
{
// 把内容从file stream 写入upload stream
strm.Write(buff, 0, contentLen);
contentLen = fs.Read(buff, 0, buffLength);
}

// 关闭两个流
strm.Close();
fs.Close();
}
catch (Exception ex)
{
CommonHelper.PrintLog("FTP传输文件出错！");
}
}

//判断是否存在该文件
public Boolean Check(string localFile)
{
bool flag = true;
try
{
reqFTP = (FtpWebRequest)WebRequest.Create("ftp://" + ftpServerIP + "/" + localFile);
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
reqFTP.Method = WebRequestMethods.Ftp.ListDirectory;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
response.Close();
}
catch (Exception)
{
reqFTP.Abort();
flag = false;
}
return flag;
}

//创建目录
public Boolean FtpMakeDir(string localFile)
{
reqFTP = (FtpWebRequest)WebRequest.Create("ftp://" + ftpServerIP + "/" + localFile);
CommonHelper.PrintLog("创建路径" + "ftp://" + ftpServerIP + "/" + localFile);
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;
try
{
reqFTP.UsePassive = true;
reqFTP.UseBinary = false;
reqFTP.KeepAlive = false;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
response.Close();
}
catch (Exception ex)
{
CommonHelper.PrintLog("创建文件报错" + ex.ToString());
reqFTP.Abort();
return false;
}
reqFTP.Abort();
return true;
}

/// <summary>
/// FTP连接
/// </summary>
/// <param name="path"></param>

public 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.UseBinary = true;
// ftp用户名和密码
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);

}