using System;
using System.IO;
using System.Net;
using System.Text;
using System.Diagnostics;
using System.Text.RegularExpressions;
using System.Web;
namespace IS.Common
{
/// <summary>
/// ftp操作類,ftp上傳，下載下傳，建立目錄，檢查檔案存在，删除檔案
/// </summary>
public class Ftp
{
/// <summary>
/// 從ftp上下載下傳檔案
/// </summary>
/// <param name="filePath">下載下傳到本地的檔案路徑</param>
/// <param name="FileSrc">ftp源檔案夾</param>
/// <param name="fileName">下載下傳後的檔案名</param>
/// <param name="ftpServerIP"></param>
/// <param name="ftpUserName"></param>
/// <param name="ftpPwd"></param>
public static void Download(string filePath, string FileSrc, string fileName, string ftpServerIP, string ftpUserName, string ftpPwd)
{
if (!Directory.Exists(filePath))
{
Directory.CreateDirectory(filePath);
}
using (FileStream OutputStream = new FileStream(filePath + "\\" + fileName, FileMode.Create))
{
FtpWebRequest ReqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + FileSrc));
ReqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
ReqFTP.UseBinary = true;
ReqFTP.Credentials = new NetworkCredential(ftpUserName, ftpPwd);
using (FtpWebResponse response = (FtpWebResponse)ReqFTP.GetResponse())
{
using (Stream FtpStream = response.GetResponseStream())
{
long Cl = response.ContentLength;
int bufferSize = 2048;
int readCount;
byte[] buffer = new byte[bufferSize];
readCount = FtpStream.Read(buffer, 0, bufferSize);
while (readCount > 0)
{
OutputStream.Write(buffer, 0, readCount);
readCount = FtpStream.Read(buffer, 0, bufferSize);
}
FtpStream.Close();
}
response.Close();
}
OutputStream.Close();
}
}
/// <summary>
/// 從伺服器上傳檔案到FTP上
/// </summary>
/// <param name="sFileDstPath">源檔案夾名稱</param>
/// <param name="FolderName">ftp伺服器的目标檔案夾</param>
/// <param name="ftpServerIP">ftp ip</param>
/// <param name="ftpUserName">使用者名</param>
/// <param name="ftpPwd">密碼</param>
public static void UploadSmall(string sFileDstPath, string FolderName, string ftpServerIP, string ftpUserName, string ftpPwd)
{
FileInfo fileInf = new FileInfo(sFileDstPath);
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + FolderName + "/" + fileInf.Name));
reqFTP.Credentials = new NetworkCredential(ftpUserName, ftpPwd);
reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
reqFTP.UseBinary = true;
reqFTP.ContentLength = fileInf.Length;
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;
using (FileStream fs = fileInf.OpenRead())
{
using (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();
}
}
/// <summary>
/// 删除FTP上的檔案
/// </summary>
/// <param name="IName">要删除的檔案數組</param>
/// <param name="FolderName">要删除檔案所在的ftp檔案夾</param>
/// <param name="ftpServerIP"></param>
/// <param name="ftpUserName"></param>
/// <param name="ftpPwd"></param>
public static void DeleteFtpFile(string[] IName, string FolderName, string ftpServerIP, string ftpUserName, string ftpPwd)
{
foreach (string ImageName in IName)
{
string[] FileList = GetFileList(FolderName, ftpServerIP, ftpUserName, ftpPwd);
for (int i = 0; i < FileList.Length; i++)
{
string Name = FileList[i].ToString();
if (Name == ImageName)
{
FtpWebRequest ReqFTP;
ReqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + FolderName + "/" + ImageName));
ReqFTP.Credentials = new NetworkCredential(ftpUserName, ftpPwd);
ReqFTP.KeepAlive = false;
ReqFTP.Method = WebRequestMethods.Ftp.DeleteFile;
ReqFTP.UseBinary = true;
using (FtpWebResponse Response = (FtpWebResponse)ReqFTP.GetResponse())
{
long size = Response.ContentLength;
using (Stream datastream = Response.GetResponseStream())
{
using (StreamReader sr = new StreamReader(datastream))
{
sr.ReadToEnd();
sr.Close();
}
datastream.Close();
}
Response.Close();
}
}
}
}
}
/// <summary>
/// 檢查檔案是否存在
/// </summary>
/// <param name="FolderName">ftp檔案夾</param>
/// <param name="ftpServerIP"></param>
/// <param name="ftpUserName"></param>
/// <param name="ftpPwd"></param>
/// <returns></returns>
public static string[] GetFileList(string FolderName, string ftpServerIP, string ftpUserName, string ftpPwd)
{
string[] downloadFiles;
StringBuilder result = new StringBuilder();
FtpWebRequest reqFTP;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + FolderName + "/"));
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpUserName, ftpPwd);
reqFTP.Method = WebRequestMethods.Ftp.ListDirectory;
WebResponse response = reqFTP.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream());
string line = reader.ReadLine();
while (line != null)
{
result.Append(line);
result.Append("\n");
line = reader.ReadLine();
}
// to remove the trailing '\n'
result.Remove(result.ToString().LastIndexOf('\n'), 1);
reader.Close();
response.Close();
return result.ToString().Split('\n');
}
catch (Exception ex)
{
downloadFiles = null;
return downloadFiles;
}
}
/// <summary>
/// 從用戶端上傳檔案到FTP上
/// </summary>
/// <param name="sFilePath">用戶端檔案上傳類</param>
/// <param name="filename">ftp檔案名</param>
/// <param name="FolderName">ftp檔案夾</param>
/// <param name="ftpServerIP"></param>
/// <param name="ftpUserName"></param>
/// <param name="ftpPwd"></param>
public static void UploadFtp(HttpPostedFile sFilePath, string filename, string FolderName, string ftpServerIP, string ftpUserName, string ftpPwd)
{
//擷取的伺服器路徑
//FileInfo fileInf = new FileInfo(sFilePath);
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + FolderName + "/" + filename));
reqFTP.Credentials = new NetworkCredential(ftpUserName, ftpPwd);
reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
reqFTP.UseBinary = true;
reqFTP.ContentLength = sFilePath.ContentLength;
//設定緩存
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;
using (Stream fs = sFilePath.InputStream)
{
using (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();
}
}
/// <summary>
/// 建立目錄
/// </summary>
/// <param name="FolderName">ftp目錄</param>
/// <param name="ftpServerIP"></param>
/// <param name="ftpUserName"></param>
/// <param name="ftpPwd"></param>
public static void CreateDirectory(string FolderName, string ftpServerIP, string ftpUserName, string ftpPwd)
{
//建立日期目錄
try
{
FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + FolderName));
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpUserName, ftpPwd);
reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
}
catch
{
}
}
private static Regex regexName = new Regex(@"[^\s]*$", RegexOptions.Compiled);
/// <summary>
/// 檢查日期目錄和檔案是否存在
/// </summary>
/// <param name="FolderName">檔案(夾)名</param>
/// <param name="ftpServerIP"></param>
/// <param name="ftpUserName"></param>
/// <param name="ftpPwd"></param>
/// <returns></returns>
public static bool CheckFileOrPath(string FolderName, string ftpServerIP, string ftpUserName, string ftpPwd)
{
//檢查一下日期目錄是否存在
FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/"));
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpUserName, ftpPwd);
reqFTP.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
Stream stream = reqFTP.GetResponse().GetResponseStream();
using (StreamReader sr = new StreamReader(stream))
{
string line = sr.ReadLine();
while (!string.IsNullOrEmpty(line))
{
GroupCollection gc = regexName.Match(line).Groups;
if (gc.Count != 1)
{
throw new ApplicationException("FTP 傳回的字串格式不正确");
}
string path = gc[0].Value;
if (path == FolderName)
{
return true;
}
line = sr.ReadLine();
}
}
return false;
}
}
}
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