代码如下：
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Net;
using System.Windows.Forms;
namespace RecoverData
{
public class FTPClient
{
private string ftpServerIP = String.Empty;
private string ftpUser = String.Empty;
private string ftpPassword = String.Empty;
private string ftpRootURL = String.Empty;
private string ftpServerPort = string.Empty;
private ProgressBar pbCurrent;
private ProgressBar pbTotal;
public FTPClient(string url, string userid, string password, string serverIp, string serverPort)
{
this.ftpServerIP = serverIp;
this.ftpServerPort = serverPort;
this.ftpUser = userid;
this.ftpPassword = password;
this.ftpRootURL = url;
//this.pbCurrent = srcPbCurrent;
//this.pbTotal = srcPbTotal;
}
/// <summary>
/// 上传 www.jb200.com
/// </summary>
/// <param name="localFile">本地文件绝对路径</param>
/// <param name="ftpPath">上传到ftp的路径</param>
/// <param name="ftpFileName">上传到ftp的文件名</param>
public bool fileUpload(FileInfo localFile, string ftpPath, string ftpFileName)
{
bool success = false;
FtpWebRequest ftpWebRequest = null;
FileStream localFileStream = null;
Stream requestStream = null;
try
{
string uri = ftpRootURL + ftpPath + ftpFileName;
ftpWebRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
ftpWebRequest.Credentials = new NetworkCredential(ftpUser, ftpPassword);
ftpWebRequest.UseBinary = true;
ftpWebRequest.KeepAlive = false;
ftpWebRequest.Method = WebRequestMethods.Ftp.UploadFile;
ftpWebRequest.ContentLength = localFile.Length;
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;
localFileStream = localFile.OpenRead();
requestStream = ftpWebRequest.GetRequestStream();
contentLen = localFileStream.Read(buff, 0, buffLength);
while (contentLen != 0)
{
requestStream.Write(buff, 0, contentLen);
contentLen = localFileStream.Read(buff, 0, buffLength);
}
success = true;
}
catch (Exception)
{
success = false;
}
finally
{
if (requestStream != null)
{
requestStream.Close();
}
if (localFileStream != null)
{
localFileStream.Close();
}
}
return success;
}
/// <summary>
/// 上传文件
/// </summary>
/// <param name="localPath">本地文件地址(没有文件名)</param>
/// <param name="localFileName">本地文件名</param>
/// <param name="ftpPath">上传到ftp的路径</param>
/// <param name="ftpFileName">上传到ftp的文件名</param>
public bool fileUpload(string localPath, string localFileName, string ftpPath, string ftpFileName)
{
bool success = false;
try
{
FileInfo localFile = new FileInfo(localPath + localFileName);
if (localFile.Exists)
{
success = fileUpload(localFile, ftpPath, ftpFileName);
}
else
{
success = false;
}
}
catch (Exception)
{
success = false;
}
return success;
}
/// <summary>
/// 下载文件
/// </summary>
/// <param name="localPath">本地文件地址(没有文件名)</param>
/// <param name="localFileName">本地文件名</param>
/// <param name="ftpPath">下载的ftp的路径</param>
/// <param name="ftpFileName">下载的ftp的文件名</param>
public bool fileDownload(string localPath, string localFileName, string ftpPath, string ftpFileName)
{
bool success = false;
FtpWebRequest ftpWebRequest = null;
FtpWebResponse ftpWebResponse = null;
Stream ftpResponseStream = null;
FileStream outputStream = null;
try
{
if (localPath != "")
{
System.IO.DirectoryInfo di = new DirectoryInfo(localPath);
di.Create();
}
outputStream = new FileStream(localPath + localFileName, FileMode.Create);
string uri = ftpRootURL + ftpPath+ftpFileName;//20110310fqs
ftpWebRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
ftpWebRequest.Credentials = new NetworkCredential(ftpUser, ftpPassword);
ftpWebRequest.UseBinary = true;
ftpWebRequest.Method = WebRequestMethods.Ftp.DownloadFile;
ftpWebResponse = (FtpWebResponse)ftpWebRequest.GetResponse();
ftpResponseStream = ftpWebResponse.GetResponseStream();
long contentLength = ftpWebResponse.ContentLength;
int bufferSize = 2048;
byte[] buffer = new byte[bufferSize];
int readCount;
pbCurrent.Value = 0;
pbCurrent.Maximum = (int)(GetFileSize(ftpPath + ftpFileName) / bufferSize) + 1;
readCount = ftpResponseStream.Read(buffer, 0, bufferSize);
while (readCount > 0)
{
outputStream.Write(buffer, 0, readCount);
readCount = ftpResponseStream.Read(buffer, 0, bufferSize);
if (pbCurrent.Value != pbCurrent.Maximum)
{
pbCurrent.Value += 1;
}
}
pbTotal.Value += 1;
success = true;
}
catch (Exception)
{
success = false;
}
finally
{
if (outputStream != null)
{
outputStream.Close();
}
if (ftpResponseStream != null)
{
ftpResponseStream.Close();
}
if (ftpWebResponse != null)
{
ftpWebResponse.Close();
}
}
return success;
}
/// <summary>
/// 重命名
/// </summary>
/// <param name="ftpPath">ftp文件路径</param>
/// <param name="currentFilename"></param>
/// <param name="newFilename"></param>
public bool fileRename(string ftpPath, string currentFileName, string newFileName)
{
bool success = false;
FtpWebRequest ftpWebRequest = null;
FtpWebResponse ftpWebResponse = null;
Stream ftpResponseStream = null;
try
{
string uri = ftpRootURL + ftpPath + currentFileName;
ftpWebRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
ftpWebRequest.Credentials = new NetworkCredential(ftpUser, ftpPassword);
ftpWebRequest.UseBinary = true;
ftpWebRequest.Method = WebRequestMethods.Ftp.Rename;
ftpWebRequest.RenameTo = newFileName;
ftpWebResponse = (FtpWebResponse)ftpWebRequest.GetResponse();
ftpResponseStream = ftpWebResponse.GetResponseStream();
}
catch (Exception)
{
success = false;
}
finally
{
if (ftpResponseStream != null)
{
ftpResponseStream.Close();
}
if (ftpWebResponse != null)
{
ftpWebResponse.Close();
}
}
return success;
}
/// <summary>
/// 消除文件
/// </summary>
/// <param name="filePath"></param>
public bool fileDelete(string ftpPath, string ftpName)
{
bool success = false;
FtpWebRequest ftpWebRequest = null;
FtpWebResponse ftpWebResponse = null;
Stream ftpResponseStream = null;
StreamReader streamReader = null;
try
{
string uri = ftpRootURL + ftpPath + ftpName;
ftpWebRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
ftpWebRequest.Credentials = new NetworkCredential(ftpUser, ftpPassword);
ftpWebRequest.KeepAlive = false;
ftpWebRequest.Method = WebRequestMethods.Ftp.DeleteFile;
ftpWebResponse = (FtpWebResponse)ftpWebRequest.GetResponse();
long size = ftpWebResponse.ContentLength;
ftpResponseStream = ftpWebResponse.GetResponseStream();
streamReader = new StreamReader(ftpResponseStream);
string result = String.Empty;
result = streamReader.ReadToEnd();
success = true;
}
catch (Exception)
{
success = false;
}
finally
{
if (streamReader != null)
{
streamReader.Close();
}
if (ftpResponseStream != null)
{
ftpResponseStream.Close();
}
if (ftpWebResponse != null)
{
ftpWebResponse.Close();
}
}
return success;
}
/// <summary>
/// 文件存在检查
/// </summary>
/// <param name="ftpPath"></param>
/// <param name="ftpName"></param>
/// <returns></returns>
public bool fileCheckExist(string ftpPath, string ftpName)
{
bool success = false;
FtpWebRequest ftpWebRequest = null;
WebResponse webResponse = null;
StreamReader reader = null;
try
{
string url = ftpRootURL + ftpPath;
ftpWebRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri(url));
ftpWebRequest.Credentials = new NetworkCredential(ftpUser, ftpPassword);
ftpWebRequest.Method = WebRequestMethods.Ftp.ListDirectory;
ftpWebRequest.KeepAlive = false;
webResponse = ftpWebRequest.GetResponse();
reader = new StreamReader(webResponse.GetResponseStream());
string line = reader.ReadLine();
while (line != null)
{
if (line == ftpName)
{
success = true;
break;
}
line = reader.ReadLine();
}
}
catch (Exception)
{
success = false;
}
finally
{
if (reader != null)
{
reader.Close();
}
if (webResponse != null)
{
webResponse.Close();
}
}
return success;
}
/// <summary>
/// 获取指定文件大小
/// </summary>
/// <param name="filename"></param>
/// <returns></returns>
public long GetFileSize(string filename)
{
FtpWebRequest reqFTP;
long fileSize = 0;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpRootURL + filename));
reqFTP.Method = WebRequestMethods.Ftp.GetFileSize;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpUser, ftpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
fileSize = response.ContentLength;
ftpStream.Close();
response.Close();
}
catch (Exception ex)
{
//Insert_Standard_ErrorLog.Insert("FtpWeb", "GetFileSize Error --> " + ex.Message);
}
return fileSize;
}
}
}