public class FTPHelper
{
private static string FTPCONSTR = "ftp://192.168.1.23:21";
private static string FTPUSERNAME = "lqwvje";//FTP服务器的用户名
private static string FTPPASSWORD = "123456";//FTP服务器的密码
/// <summary>
/// 上传文件到远程ftp
/// </summary>
/// <param name="ftpPath">ftp服务端的文件路径</param>
/// <param name="path">本地的文件目录</param>
/// <returns></returns>
public static bool UploadFile(string ftpPath, string localPath)
{
FileInfo f = new FileInfo(localPath);
if (!MakeDir(ftpPath))
{
return false;
}
string path = FTPCONSTR + ftpPath + Path.GetFileName(localPath);
FtpWebRequest reqFtp = (FtpWebRequest)FtpWebRequest.Create(new Uri(path));
reqFtp.UseBinary = true;
reqFtp.Credentials = new NetworkCredential(FTPUSERNAME, FTPPASSWORD);
reqFtp.KeepAlive = false;
reqFtp.Method = WebRequestMethods.Ftp.UploadFile;
reqFtp.ContentLength = f.Length;
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;
FileStream fs = f.OpenRead();
try
{
Stream strm = reqFtp.GetRequestStream();
contentLen = fs.Read(buff, 0, buffLength);
while (contentLen != 0)
{
strm.Write(buff, 0, contentLen);
contentLen = fs.Read(buff, 0, buffLength);
}
strm.Close();
fs.Close();
return true;
}
catch (Exception ex)
{
string ERR = ex.Message;
return false;
}
}
/// <summary>
/// 从ftp服务器下载文件的功能
/// </summary>
/// <param name="ftpFilePath">ftp下载的文件地址</param>
/// <param name="localPath">存放到本地的路径</param>
/// <returns></returns>
public static bool Download(string ftpFilePath, string localPath)
{
try
{
string newFileName = Path.Combine(localPath, Path.GetFileName(ftpFilePath));
if (File.Exists(newFileName))
{
File.Delete(newFileName);
}
FtpWebRequest reqFtp = (FtpWebRequest)FtpWebRequest.Create(new Uri(FTPCONSTR + ftpFilePath));
reqFtp.UseBinary = true;
reqFtp.Credentials = new NetworkCredential(FTPUSERNAME, FTPPASSWORD);
FtpWebResponse response = (FtpWebResponse)reqFtp.GetResponse();
Stream ftpStream = response.GetResponseStream();
//long cl = response.ContentLength;
int bufferSize = 2048;
int readCount;
byte[] buffer = new byte[bufferSize];
readCount = ftpStream.Read(buffer, 0, bufferSize);
FileStream outputStream = new FileStream(newFileName, FileMode.Create);
while (readCount > 0)
{
outputStream.Write(buffer, 0, readCount);
readCount = ftpStream.Read(buffer, 0, bufferSize);
}
ftpStream.Close();
outputStream.Close();
response.Close();
return true;
}
catch (Exception ex)
{
string err = ex.Message;
return false;
}
}
/// <summary>
/// 获得文件大小
/// </summary>
/// <param name="url">FTP服务端文件路径</param>
/// <returns></returns>
public static long GetFileSize(string ftpFilePath)
{
long fileSize = 0;
try
{
FtpWebRequest reqFtp = (FtpWebRequest)FtpWebRequest.Create(new Uri(FTPCONSTR + ftpFilePath));
reqFtp.UseBinary = true;
reqFtp.Credentials = new NetworkCredential(FTPUSERNAME, FTPPASSWORD);
reqFtp.Method = WebRequestMethods.Ftp.GetFileSize;
FtpWebResponse response = (FtpWebResponse)reqFtp.GetResponse();
fileSize = response.ContentLength;
response.Close();
}
catch (Exception ex)
{
string s = ex.Message;
return -1;
}
return fileSize;
}
/// <summary>
///在ftp服务器上创建文件目录
/// </summary>
/// <param name="dirName">服务端文件目录</param>
/// <returns></returns>
public static bool MakeDir(string dirName)
{
try
{
string[] ds = dirName.Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
string tempPath = "/";
foreach (string s in ds)
{
tempPath += s + "/";
if (!RemoteFtpDirExists(tempPath))
{
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(FTPCONSTR + tempPath);
request.Credentials = new NetworkCredential(FTPUSERNAME, FTPPASSWORD);
request.Method = WebRequestMethods.Ftp.MakeDirectory;
request.GetResponse();
request.Abort();
}
}
return true;
}
catch (Exception ex)
{
string msg = ex.Message;
return false;
}
}
/// <summary>
/// 判断ftp服务端的文件目录是否存在
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
public static bool RemoteFtpDirExists(string ftpPath)
{
FtpWebRequest reqFtp = (FtpWebRequest)FtpWebRequest.Create(new Uri(FTPCONSTR + ftpPath));
reqFtp.UseBinary = true;
reqFtp.Credentials = new NetworkCredential(FTPUSERNAME, FTPPASSWORD);
reqFtp.Method = WebRequestMethods.Ftp.ListDirectory;
FtpWebResponse resFtp = null;
try
{
resFtp = (FtpWebResponse)reqFtp.GetResponse();
//FtpStatusCode code = resFtp.StatusCode;//OpeningData
resFtp.Close();
return true;
}
catch
{
if (resFtp != null)
{
resFtp.Close();
}
return false;
}
}
/// <summary>
/// 从ftp服务器删除文件的功能
/// </summary>
/// <param name="ftpFilePath">ftp服务端文件地址</param>
/// <returns></returns>
public static bool DeleteFile(string ftpFilePath)
{
try
{
FtpWebRequest reqFtp = (FtpWebRequest)FtpWebRequest.Create(new Uri(FTPCONSTR + ftpFilePath));
reqFtp.UseBinary = true;
reqFtp.KeepAlive = false;
reqFtp.Method = WebRequestMethods.Ftp.DeleteFile;
reqFtp.Credentials = new NetworkCredential(FTPUSERNAME, FTPPASSWORD);
FtpWebResponse response = (FtpWebResponse)reqFtp.GetResponse();
response.Close();
return true;
}
catch (Exception ex)
{
//errorinfo = string.Format("因{0},无法下载", ex.Message);
return false;
}
}
/// <summary>
/// 获取文件和目录列表
/// </summary>
/// <returns></returns>
public static string[] GetList(string ftpPath = "")
{
try
{
StringBuilder result = new StringBuilder();
FtpWebRequest ftp = (FtpWebRequest)FtpWebRequest.Create(new Uri(FTPCONSTR + ftpPath));
ftp.Credentials = new NetworkCredential(FTPUSERNAME, FTPPASSWORD);
ftp.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
WebResponse response = ftp.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);//读入responses所创建的数据流
string line = reader.ReadLine();
while (line != null)
{
result.AppendLine(line);
line = reader.ReadLine();
}
reader.Close();
response.Close();
return result.ToString().Split('\n');
}
catch (Exception ex)
{
throw ex;
}
}
}方法调用
//上传文件到FTP服务端
FTPHelper.UploadFile("/root/2/24/6/221.txt", "C:\\221.txt");
//从FTP服务端下载文件
FTPHelper.Download("/root/2/24/6/221.txt", "C:\\");
//删除FTP服务端文件
FTPHelper.DeleteFile("/root/2/24/6/221.txt");
//获取FTP文件和目录列表
FTPHelper.GetList("/root");本文来自 www.LuoFenMing.com