C# FTP操作類庫
class FTP_Class
{
string ftpServerIP;
string ftpUserID;
string ftpPassword;
FtpWebRequest reqFTP;
#region 連線
/// <summary>
/// 連線FtpWebRequest
/// </summary>
/// <param name="path"></param>
private void Connect(String path)//連線ftp
{
// 根據uri建立FtpWebRequest物件
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(path));
// 指定資料傳輸型別
reqFTP.UseBinary = true;
// ftp使用者名稱和密碼
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
}
#endregion
#region ftp登入資訊
/// <summary>
/// ftp登入資訊
/// </summary>
/// <param name="ftpServerIP">FtpIP地址</param>
/// <param name="ftpUserID">ftp使用者名稱</param>
/// <param name="ftpPassword">ftp密碼</param>
public void FtpUpDown(string ftpServerIP, string ftpUserID, string ftpPassword)
{
this.ftpServerIP = ftpServerIP;
this.ftpUserID = ftpUserID;
this.ftpPassword = ftpPassword;
}
#endregion
#region 獲取檔案列表
/// <summary>
/// 上面的程式碼示例瞭如何從ftp伺服器上獲得檔案列表
/// </summary>
/// <param name="path">URL路徑</param>
/// <param name="WRMethods"></param>
/// <returns>String[] </returns>
private string[] GetFileList(string path, string WRMethods) //內部方法
{
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);//中文檔名
string line = reader.ReadLine();
while (line != null)
{
result.Append(line);
result.Append("\n");
line = reader.ReadLine(); //讀取下一行
}
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>
///根據知道的檔案路徑得到檔案列表
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
public string[] GetFileList(string path)
{
return GetFileList("ftp://" + ftpServerIP + "/" + path, WebRequestMethods.Ftp.ListDirectory);
}
/// <summary>
/// 預設URl檔案列表
/// </summary>
/// <returns></returns>
public string[] GetFileList()
{
return GetFileList("ftp://" + ftpServerIP + "/", WebRequestMethods.Ftp.ListDirectory);
}
#endregion
#region 上傳檔案
/// <summary>
///從ftp伺服器上載檔案的功能
/// </summary>
/// <param name="filename">要上傳的檔案</param>
/// <param name="path">上傳的路徑</param>
/// <param name="errorinfo">返回資訊</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);//連線
// 預設為true，連線不會被關閉
// 在一個命令之後被執行
reqFTP.KeepAlive = false;
// 指定執行什麼命令
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
// 上傳檔案時通知伺服器檔案的大小
reqFTP.ContentLength = fileInf.Length;
// 緩衝大小設定為kb
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;
// 開啟一個檔案流(System.IO.FileStream) 去讀上傳的檔案
FileStream fs = fileInf.OpenRead();
try
{
// 把上傳的檔案寫入流
Stream strm = reqFTP.GetRequestStream();
// 每次讀檔案流的kb
contentLen = fs.Read(buff, 0, buffLength);
// 流內容沒有結束
while (contentLen != 0)
{
// 把內容從file stream 寫入upload stream
strm.Write(buff, 0, contentLen);
contentLen = fs.Read(buff, 0, buffLength);
}
// 關閉兩個流
strm.Close();
fs.Close();
errorinfo = "完成";
return true;
}
catch (Exception ex)
{
errorinfo = string.Format("因{0},無法完成上傳", ex.Message);
return false;
}
}
#endregion
#region 續傳檔案
/// <summary>
/// 續傳檔案
/// </summary>
/// <param name="filename">檔名</param>
/// <param name="size">檔案的大小</param>
/// <param name="path">路徑</param>
/// <param name="errorinfo">返回資訊</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);//連線
// 預設為true，連線不會被關閉
// 在一個命令之後被執行
reqFTP.KeepAlive = false;
// 指定執行什麼命令
reqFTP.Method = WebRequestMethods.Ftp.AppendFile;
// 上傳檔案時通知伺服器檔案的大小
reqFTP.ContentLength = fileInf.Length;
// 緩衝大小設定為kb
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;
// 開啟一個檔案流(System.IO.FileStream) 去讀上傳的檔案
FileStream fs = fileInf.OpenRead();
try
{
StreamReader dsad = new StreamReader(fs);
fs.Seek(size, SeekOrigin.Begin);
// 把上傳的檔案寫入流
Stream strm = reqFTP.GetRequestStream();
// 每次讀檔案流的kb
contentLen = fs.Read(buff, 0, buffLength);
// 流內容沒有結束
while (contentLen != 0)
{
// 把內容從file stream 寫入upload stream
strm.Write(buff, 0, contentLen);
contentLen = fs.Read(buff, 0, buffLength);
}
// 關閉兩個流
strm.Close();
fs.Close();
errorinfo = "完成";
return true;
}
catch (Exception ex)
{
errorinfo = string.Format("因{0},無法完成上傳", ex.Message);
return false;
}
}
#endregion
#region 下載檔案
/// <summary>
/// 上面的程式碼實現了從ftp伺服器下載檔案的功能
/// </summary>
/// <param name="filePath">檔案</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("我的電腦\\", "");
String onlyFileName = Path.GetFileName(fileName);
string newFileName = filePath + onlyFileName;
if (File.Exists(newFileName))
{
errorinfo = string.Format("本地檔案{0}已存在,無法下載", newFileName);
return false;
}
ftpfilepath = ftpfilepath.Replace("\\", "/");
string url = "ftp://" + ftpfilepath;
Connect(url);//連線
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},無法下載", ex.Message);
return false;
}
}
#endregion
#region 刪除檔案
/// <summary>
/// 刪除檔案
/// </summary>
/// <param name="fileName"></param>
public void DeleteFileName(string fileName)
{
try
{
FileInfo fileInf = new FileInfo(fileName);
string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;
Connect(uri);//連線
// 預設為true，連線不會被關閉
// 在一個命令之後被執行
reqFTP.KeepAlive = false;
// 指定執行什麼命令
reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
response.Close();
}
catch (Exception ex)
{
//MessageBox.Show(ex.Message, "刪除錯誤");
}
}
#endregion
#region 在ftp上建立目錄
/// <summary>
/// 在ftp上建立目錄
/// </summary>
/// <param name="dirName"></param>
public void MakeDir(string dirName)
{
try
{
string uri = "ftp://" + ftpServerIP + "/" + dirName;
Connect(uri);//連線
reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
response.Close();
}
catch (Exception ex)
{
// MessageBox.Show(ex.Message);
}
}
#endregion
#region 刪除ftp上目錄
/// <summary>
/// 刪除ftp上目錄
/// </summary>
/// <param name="dirName"></param>
public void delDir(string dirName)
{
try
{
string uri = "ftp://" + ftpServerIP + "/" + dirName;
Connect(uri);//連線
reqFTP.Method = WebRequestMethods.Ftp.RemoveDirectory;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
response.Close();
}
catch (Exception ex)
{
// MessageBox.Show(ex.Message);
}
}
#endregion
#region 獲得ftp上檔案大小
/// <summary>
/// 獲得ftp上檔案大小
/// </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);//連線
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上檔案改名
/// <summary>
/// ftp上檔案改名
/// </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);//連線
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 獲得檔案明晰
/// <summary>
/// 獲得檔案明晰
/// </summary>
/// <returns></returns>
public string[] GetFilesDetailList()
{
return GetFileList("ftp://" + ftpServerIP + "/", WebRequestMethods.Ftp.ListDirectoryDetails);
}
/// <summary>
/// 獲得檔案明晰
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
public string[] GetFilesDetailList(string path)
{
path = path.Replace("\\", "/");
return GetFileList("ftp://" + path, WebRequestMethods.Ftp.ListDirectoryDetails);
}
#endregion
}