/// <summary>
/// 判断remotePath是否是远程FTP目录
/// </summary>
/// <param name="ftpInfo">远程FTP信息</param>
/// <param name="remotePath">目录名</param>
/// <returns></returns>
public static bool MakeDirectory(FtpInfo ftpInfo, string remotePath)
{
try
{
//1.删除最后面的目录分隔符
string path1 = string.Format("{0}/{1}", ftpInfo.RemoteDir, remotePath);
string uri = string.Format("ftp://{0}:{1}{2}"
, ftpInfo.ServerIP
, ftpInfo.Port
, PathUtil.DeleteSeparator(path1));
//2.设置访问FTP参数
FtpWebRequest reqFTP = (FtpWebRequest)WebRequest.Create(new Uri(uri));
reqFTP.UseBinary = ftpInfo.IsUseBinary;
reqFTP.UsePassive = ftpInfo.FireMode;
reqFTP.Credentials = new NetworkCredential(ftpInfo.User, ftpInfo.Password);
reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;
reqFTP.KeepAlive = false;
//3.读取FTP信息
using (WebResponse response = reqFTP.GetResponse())
{
response.Close();
}
return(true);
}
catch (Exception)
{
return(false);
}
}
/// <summary>
/// 上传文件
/// </summary>
/// <param name="ftpInfo">上传FTP信息</param>
/// <param name="fileName">上传文件名</param>
/// <param name="data">文件内容</param>
/// <param name="errorInfo"></param>
/// <returns></returns>
public static bool Upload(FtpInfo ftpInfo, string fileName, byte[] data, ref string errorInfo)
{
Stream requestStream = null;
FtpWebRequest request;
string uri = string.Empty;
try
{
if (string.IsNullOrEmpty(ftpInfo.RemoteDir))
{
uri = string.Format("ftp://{0}:{1}/{2}"
, ftpInfo.ServerIP
, ftpInfo.Port
, Path.GetFileName(fileName)
);
}
else
{
uri = string.Format("ftp://{0}:{1}{2}/{3}"
, ftpInfo.ServerIP
, ftpInfo.Port
, PathUtil.DeleteSeparator(ftpInfo.RemoteDir)
, Path.GetFileName(fileName)
);
}
request = (FtpWebRequest)WebRequest.Create(new Uri(uri));
request.Method = WebRequestMethods.Ftp.UploadFile;
request.Credentials = new NetworkCredential(ftpInfo.User, ftpInfo.Password);
request.KeepAlive = false;
request.UseBinary = ftpInfo.IsUseBinary;
request.Timeout = ftpInfo.TimeOut;
request.UsePassive = ftpInfo.FireMode;//被动方式连接到FTP服务器
requestStream = request.GetRequestStream();
requestStream.Write(data, 0, data.Length);
return(true);
}
catch (Exception ex)
{
errorInfo = ex.Message;
return(false);
}
finally
{
if (requestStream != null)
{
requestStream.Close();
}
}
}
public FtpInfo Clone()
{
FtpInfo ftpInfo = new FtpInfo();
ftpInfo.User = User;
ftpInfo.Password = Password;
ftpInfo.FireMode = FireMode;
ftpInfo.IsUseBinary = IsUseBinary;
ftpInfo.Port = Port;
ftpInfo.RemoteDir = RemoteDir;
ftpInfo.ServerIP = ServerIP;
ftpInfo.TimeOut = TimeOut;
return(ftpInfo);
}
/// <summary>
/// 检查远程目录是否存在，如果不存在则创建远程FTP目录
/// </summary>
/// <param name="ftpInfo">远程FTP信息</param>
/// <param name="remotePath">目录名</param>
/// <returns></returns>
public static bool CheckMakeDirectory(FtpInfo ftpInfo, string remotePath)
{
string remoteDir = string.Format("{0}/{1}"
, ftpInfo.RemoteDir
, remotePath);
try
{
//1.获得目录名称
List <string> remoteDirNames = PathUtil.GetDirectoryName(remoteDir);
//2.判断远程FTP是否存在目录，如果不存在则创建此目录
FtpInfo tempFtpInfo = ftpInfo.Clone();
tempFtpInfo.RemoteDir = "";
foreach (string dirName in remoteDirNames)
{
//2.1 判断远程FTP是否存在目录
tempFtpInfo.RemoteDir = tempFtpInfo.RemoteDir + "/" + dirName;
if (CheckDirectoryExists(tempFtpInfo, string.Empty))
{
continue;
}
//2.2 如果不存在则创建此目录
if (!MakeDirectory(tempFtpInfo, string.Empty))
{
return(false);
}
}
return(true);
}
catch (Exception)
{
return(false);
}
}
/// <summary>
/// 上传文件
/// </summary>
/// <param name="ftpInfo">上传FTP信息</param>
/// <param name="fileName">上传文件名</param>
/// <param name="error">返回出错信息</param>
/// <returns></returns>
public static bool Upload(FtpInfo ftpInfo, string fileName, ref string error)
{
Stream requestStream = null;
FtpWebRequest request;
string uri = string.Empty;
fileName = ftpInfo.LocalPath + fileName;
try
{
if (string.IsNullOrEmpty(ftpInfo.RemoteDir))
{
uri = string.Format("ftp://{0}:{1}/{2}"
, ftpInfo.ServerIP
, ftpInfo.Port
, Path.GetFileName(fileName)
);
}
else
{
uri = string.Format("ftp://{0}:{1}{2}/{3}"
, ftpInfo.ServerIP
, ftpInfo.Port
, PathUtil.DeleteSeparator(ftpInfo.RemoteDir)
, Path.GetFileName(fileName)
);
}
request = (FtpWebRequest)WebRequest.Create(new Uri(uri));
request.Method = WebRequestMethods.Ftp.UploadFile;
request.Credentials = new NetworkCredential(ftpInfo.User, ftpInfo.Password);
request.KeepAlive = false;
request.UseBinary = ftpInfo.IsUseBinary;
request.Timeout = ftpInfo.TimeOut;
request.UsePassive = ftpInfo.FireMode;//被动方式连接到FTP服务器
const int bufferLength = 2048;
requestStream = request.GetRequestStream();
// Get the event to wait on.
byte[] buffer = new byte[bufferLength];
using (FileStream stream = File.OpenRead(fileName))
{
int count = 0;
int readBytes;
do
{
readBytes = stream.Read(buffer, 0, bufferLength);
requestStream.Write(buffer, 0, readBytes);
count += readBytes;
}while (readBytes != 0);
}
return(true);
}
catch (Exception ex)
{
error = string.Format("上传文件[{0}]到[{1}]出现异常：{2}", fileName, uri, ex.Message);
return(false);
}
finally
{
if (requestStream != null)
{
requestStream.Close();
}
}
}
/// <summary>
/// 下载文件
/// </summary>
/// <param name="ftpInfo"></param>
/// <param name="fileName"></param>
/// <param name="path"></param>
/// <param name="error"></param>
/// <returns></returns>
public static bool Download(FtpInfo ftpInfo, string fileName, string path, ref string error)
{
Stream ftpStream = null;
FtpWebRequest reqFTP;
FileStream outputStream = null;
FtpWebResponse response = null;
string uri = string.Empty;
try
{
uri = string.Format("ftp://{0}:{1}{2}/{3}"
, ftpInfo.ServerIP
, ftpInfo.Port
, PathUtil.DeleteSeparator(ftpInfo.RemoteDir)
, fileName);
outputStream = new FileStream(path, FileMode.Create);
reqFTP = (FtpWebRequest)WebRequest.Create(new Uri(uri));
reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
reqFTP.UseBinary = ftpInfo.IsUseBinary;
reqFTP.Credentials = new NetworkCredential(ftpInfo.User, ftpInfo.Password);
//被动模式(将 UsePassive 属性设置为 true 可向服务器发送“PASV”命令。此命令请求服务器侦听数据端口并等待连接，而不是在收到传输命令时启动连接。)
reqFTP.UsePassive = ftpInfo.FireMode;
response = (FtpWebResponse)reqFTP.GetResponse();
ftpStream = response.GetResponseStream();
const int bufferSize = 2048;
byte[] buffer = new byte[bufferSize];
int readCount = ftpStream.Read(buffer, 0, bufferSize);
while (readCount > 0)
{
outputStream.Write(buffer, 0, readCount);
readCount = ftpStream.Read(buffer, 0, bufferSize);
}
return(true);
}
catch (Exception ex)
{
if (File.Exists(fileName))
{
File.Delete(fileName);
}
error = string.Format("下载文件FTP上文件[{0}]到[{1}]出现异常：{2}", uri, path, ex.Message);
return(false);
}
finally
{
if (ftpStream != null)
{
ftpStream.Close();
}
if (outputStream != null)
{
outputStream.Close();
}
if (response != null)
{
response.Close();
}
}
}