class FTP_Class

{

string ftpServerIP;

string ftpUserID;

string ftpPassword;

FtpWebRequest reqFTP;

#region 连接

/// <summary>

/// 连接FtpWebRequest

/// </summary>

/// <param name="path"></param>

private void Connect(String path)//连接ftp

{

// 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);

}

#endregion

#region ftp登录信息

/// <summary>

/// ftp登录信息

/// </summary>

/// <param name="ftpServerIP">FtpIP地址</param>

/// <param name="ftpUserID">ftp用户名</param>

/// <param name="ftpPassword">ftp密码</param>

public void FtpUpDown(string ftpServerIP, string ftpUserID, string ftpPassword)

{

this.ftpServerIP = ftpServerIP;

this.ftpUserID = ftpUserID;

this.ftpPassword = ftpPassword;

}

#endregion

#region 获取文件列表

/// <summary>

/// 上面的代码示例了如何从ftp服务器上获得文件列表

/// </summary>

/// <param name="path">URL路径</param>

/// <param name="WRMethods"></param>

/// <returns>String[] </returns>

private string[] GetFileList(string path, string WRMethods) //内部方法

{

string[] downloadFiles;

StringBuilder result = new StringBuilder();

try

{

Connect(path);

reqFTP.Method = WRMethods;

WebResponse response = reqFTP.GetResponse();

StreamReader reader = new StreamReader(response.GetResponseStream(), System.Text.Encoding.UTF8);//中文文件名

string line = reader.ReadLine();

while (line != null)

{

result.Append(line);

result.Append("\n");

line = reader.ReadLine(); //读取下一行

}

result.Remove(result.ToString().LastIndexOf('\n'), 1);

reader.Close();

response.Close();

return result.ToString().Split('\n');

}

catch (Exception ex)

{

Console.WriteLine(ex.Message);

downloadFiles = null;

return downloadFiles;

}

}

/// <summary>

///根据知道的文件路径得到文件列表

/// </summary>

/// <param name="path"></param>

/// <returns></returns>

public string[] GetFileList(string path)

{

return GetFileList("ftp://" + ftpServerIP + "/" + path, WebRequestMethods.Ftp.ListDirectory);

}

/// <summary>

/// 默认URl文件列表

/// </summary>

/// <returns></returns>

public string[] GetFileList()

{

return GetFileList("ftp://" + ftpServerIP + "/", WebRequestMethods.Ftp.ListDirectory);

}

#endregion

#region 上传文件

/// <summary>

///从ftp服务器上载文件的功能

/// </summary>

/// <param name="filename">要上传的文件</param>

/// <param name="path">上传的路径</param>

/// <param name="errorinfo">返回信息</param>

/// <returns></returns>

public bool Upload(string filename, string path, out string errorinfo)

{

path = path.Replace("\\", "/");

FileInfo fileInf = new FileInfo(filename);

string uri = "ftp://" + path + "/" + 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();

errorinfo = "完成";

return true;

}

catch (Exception ex)

{

errorinfo = string.Format("因{0},无法完成上传", ex.Message);

return false;

}

}

#endregion

#region 续传文件

/// <summary>

/// 续传文件

/// </summary>

/// <param name="filename">文件名</param>

/// <param name="size">文件的大小</param>

/// <param name="path">路径</param>

/// <param name="errorinfo">返回信息</param>

/// <returns></returns>

public bool Upload(string filename, long size, string path, out string errorinfo)

{

path = path.Replace("\\", "/");

FileInfo fileInf = new FileInfo(filename);

//string uri = "ftp://" + path + "/" + fileInf.Name;

string uri = "ftp://" + path;

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.AppendFile;

// 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

{

StreamReader dsad = new StreamReader(fs);

fs.Seek(size, SeekOrigin.Begin);

// 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();

errorinfo = "完成";

return true;

}

catch (Exception ex)

{

errorinfo = string.Format("因{0},无法完成上传", ex.Message);

return false;

}

}

#endregion

#region 下载文件

/// <summary>

/// 上面的代码实现了从ftp服务器下载文件的功能

/// </summary>

/// <param name="filePath">文件</param>

/// <param name="fileName"></param>

/// <param name="errorinfo"></param>

/// <returns></returns>

public bool Download(string ftpfilepath, string filePath, string fileName, out string errorinfo)

{

try

{

filePath = filePath.Replace("我的电脑\\", "");

String onlyFileName = Path.GetFileName(fileName);

string newFileName = filePath + onlyFileName;

if (File.Exists(newFileName))

{

errorinfo = string.Format("本地文件{0}已存在,无法下载", newFileName);

return false;

}

ftpfilepath = ftpfilepath.Replace("\\", "/");

string url = "ftp://" + ftpfilepath;

Connect(url);//连接

reqFTP.Credentials = new NetworkCredential(ftpUserID, 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();

errorinfo = "";

return true;

}

catch (Exception ex)

{

errorinfo = string.Format("因{0},无法下载", ex.Message);

return false;

}

}

#endregion

#region 删除文件

/// <summary>

/// 删除文件

/// </summary>

/// <param name="fileName"></param>

public void DeleteFileName(string fileName)

{

try

{

FileInfo fileInf = new FileInfo(fileName);

string uri = "ftp://" + ftpServerIP + "/" + 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.DeleteFile;

FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();

response.Close();

}

catch (Exception ex)

{

//MessageBox.Show(ex.Message, "删除错误");

}

}

#endregion

#region 在ftp上创建目录

/// <summary>

/// 在ftp上创建目录

/// </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;

FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();

response.Close();

}

catch (Exception ex)

{

// MessageBox.Show(ex.Message);

}

}

#endregion

#region 删除ftp上目录

/// <summary>

/// 删除ftp上目录

/// </summary>

/// <param name="dirName"></param>

public void delDir(string dirName)

{

try

{

string uri = "ftp://" + ftpServerIP + "/" + dirName;

Connect(uri);//连接

reqFTP.Method = WebRequestMethods.Ftp.RemoveDirectory;

FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();

response.Close();

}

catch (Exception ex)

{

// MessageBox.Show(ex.Message);

}

}

#endregion

#region 获得ftp上文件大小

/// <summary>

/// 获得ftp上文件大小

/// </summary>

/// <param name="filename"></param>

/// <returns></returns>

public long GetFileSize(string filename)

{

long fileSize = 0;

filename = filename.Replace("\\", "/");

try

{

// FileInfo fileInf = new FileInfo(filename);

//string uri1 = "ftp://" + ftpServerIP + "/" + fileInf.Name;

// string uri = filename;

string uri = "ftp://" + filename;

Connect(uri);//连接

reqFTP.Method = WebRequestMethods.Ftp.GetFileSize;

FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();

fileSize = response.ContentLength;

response.Close();

}

catch (Exception ex)

{

// MessageBox.Show(ex.Message);

}

return fileSize;

}

#endregion

#region ftp上文件改名

/// <summary>

/// ftp上文件改名

/// </summary>

/// <param name="currentFilename"></param>

/// <param name="newFilename"></param>

public void Rename(string currentFilename, string newFilename)

{

try

{

FileInfo fileInf = new FileInfo(currentFilename);

string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;

Connect(uri);//连接

reqFTP.Method = WebRequestMethods.Ftp.Rename;

reqFTP.RenameTo = newFilename;

FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();

//Stream ftpStream = response.GetResponseStream();

//ftpStream.Close();

response.Close();

}

catch (Exception ex)

{

// MessageBox.Show(ex.Message);

}

}

#endregion

#region 获得文件明晰

/// <summary>

/// 获得文件明晰

/// </summary>

/// <returns></returns>

public string[] GetFilesDetailList()

{

return GetFileList("ftp://" + ftpServerIP + "/", WebRequestMethods.Ftp.ListDirectoryDetails);

}

/// <summary>

/// 获得文件明晰

/// </summary>

/// <param name="path"></param>

/// <returns></returns>

public string[] GetFilesDetailList(string path)

{

path = path.Replace("\\", "/");

return GetFileList("ftp://" + path, WebRequestMethods.Ftp.ListDirectoryDetails);

}

#endregion

}