转自 http://www.cnblogs.com/Liyuting/p/7084718.html
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
namespace ManagementProject
{
public class FTPHelper
{
string ftpRemotePath;
#region 变量属性
/// <summary>
/// Ftp服务器ip
/// </summary>
public static string FtpServerIP = "";
/// <summary>
/// Ftp 指定用户名
/// </summary>
public static string FtpUserID = "";
/// <summary>
/// Ftp 指定用户密码
/// </summary>
public static string FtpPassword = "";
public static string ftpURI = "ftp://" + FtpServerIP + "/";
#endregion
#region 从FTP服务器下载文件，指定本地路径和本地文件名
/// <summary>
/// 从FTP服务器下载文件，指定本地路径和本地文件名
/// </summary>
/// <param name="remoteFileName">远程文件名</param>
/// <param name="localFileName">保存本地的文件名（包含路径）</param>
/// <param name="ifCredential">是否启用身份验证（false：表示允许用户匿名下载）</param>
/// <param name="updateProgress">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param>
/// <returns>是否下载成功</returns>
public static bool FtpDownload(string remoteFileName, string localFileName, bool ifCredential, Action<int, int> updateProgress = null)
{
FtpWebRequest reqFTP, ftpsize;
Stream ftpStream = null;
FtpWebResponse response = null;
FileStream outputStream = null;
try
{
outputStream = new FileStream(localFileName, FileMode.Create);
if (FtpServerIP == null || FtpServerIP.Trim().Length == 0)
{
throw new Exception("ftp下载目标服务器地址未设置！");
}
Uri uri = new Uri("ftp://" + FtpServerIP + "/" + remoteFileName);
ftpsize = (FtpWebRequest)FtpWebRequest.Create(uri);
ftpsize.UseBinary = true;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(uri);
reqFTP.UseBinary = true;
reqFTP.KeepAlive = false;
if (ifCredential)//使用用户身份认证
{
ftpsize.Credentials = new NetworkCredential(FtpUserID, FtpPassword);
reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword);
}
ftpsize.Method = WebRequestMethods.Ftp.GetFileSize;
FtpWebResponse re = (FtpWebResponse)ftpsize.GetResponse();
long totalBytes = re.ContentLength;
re.Close();
reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
response = (FtpWebResponse)reqFTP.GetResponse();
ftpStream = response.GetResponseStream();
//更新进度
if (updateProgress != null)
{
updateProgress((int)totalBytes, 0);//更新进度条
}
long totalDownloadedByte = 0;
int bufferSize = 2048;
int readCount;
byte[] buffer = new byte[bufferSize];
readCount = ftpStream.Read(buffer, 0, bufferSize);
while (readCount > 0)
{
totalDownloadedByte = readCount + totalDownloadedByte;
outputStream.Write(buffer, 0, readCount);
//更新进度
if (updateProgress != null)
{
updateProgress((int)totalBytes, (int)totalDownloadedByte);//更新进度条
}
readCount = ftpStream.Read(buffer, 0, bufferSize);
}
ftpStream.Close();
outputStream.Close();
response.Close();
return true;
}
catch (Exception ex)
{
return false;
throw;
}
finally
{
if (ftpStream != null)
{
ftpStream.Close();
}
if (outputStream != null)
{
outputStream.Close();
}
if (response != null)
{
response.Close();
}
}
}
/// <summary>
/// 从FTP服务器下载文件，指定本地路径和本地文件名（支持断点下载）
/// </summary>
/// <param name="remoteFileName">远程文件名</param>
/// <param name="localFileName">保存本地的文件名（包含路径）</param>
/// <param name="ifCredential">是否启用身份验证（false：表示允许用户匿名下载）</param>
/// <param name="size">已下载文件流大小</param>
/// <param name="updateProgress">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param>
/// <returns>是否下载成功</returns>
public static bool FtpBrokenDownload(string remoteFileName, string localFileName, bool ifCredential, long size, Action<int, int> updateProgress = null)
{
FtpWebRequest reqFTP, ftpsize;
Stream ftpStream = null;
FtpWebResponse response = null;
FileStream outputStream = null;
try
{
outputStream = new FileStream(localFileName, FileMode.Append);
if (FtpServerIP == null || FtpServerIP.Trim().Length == 0)
{
throw new Exception("ftp下载目标服务器地址未设置！");
}
Uri uri = new Uri("ftp://" + FtpServerIP + "/" + remoteFileName);
ftpsize = (FtpWebRequest)FtpWebRequest.Create(uri);
ftpsize.UseBinary = true;
ftpsize.ContentOffset = size;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(uri);
reqFTP.UseBinary = true;
reqFTP.KeepAlive = false;
reqFTP.ContentOffset = size;
if (ifCredential)//使用用户身份认证
{
ftpsize.Credentials = new NetworkCredential(FtpUserID, FtpPassword);
reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword);
}
ftpsize.Method = WebRequestMethods.Ftp.GetFileSize;
FtpWebResponse re = (FtpWebResponse)ftpsize.GetResponse();
long totalBytes = re.ContentLength;
re.Close();
reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
response = (FtpWebResponse)reqFTP.GetResponse();
ftpStream = response.GetResponseStream();
//更新进度
if (updateProgress != null)
{
updateProgress((int)totalBytes, 0);//更新进度条
}
long totalDownloadedByte = 0;
int bufferSize = 2048;
int readCount;
byte[] buffer = new byte[bufferSize];
readCount = ftpStream.Read(buffer, 0, bufferSize);
while (readCount > 0)
{
totalDownloadedByte = readCount + totalDownloadedByte;
outputStream.Write(buffer, 0, readCount);
//更新进度
if (updateProgress != null)
{
updateProgress((int)totalBytes, (int)totalDownloadedByte);//更新进度条
}
readCount = ftpStream.Read(buffer, 0, bufferSize);
}
ftpStream.Close();
outputStream.Close();
response.Close();
return true;
}
catch (Exception ex)
{
return false;
throw;
}
finally
{
if (ftpStream != null)
{
ftpStream.Close();
}
if (outputStream != null)
{
outputStream.Close();
}
if (response != null)
{
response.Close();
}
}
}
/// <summary>
/// 从FTP服务器下载文件，指定本地路径和本地文件名
/// </summary>
/// <param name="remoteFileName">远程文件名</param>
/// <param name="localFileName">保存本地的文件名（包含路径）</param>
/// <param name="ifCredential">是否启用身份验证（false：表示允许用户匿名下载）</param>
/// <param name="updateProgress">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param>
/// <param name="brokenOpen">是否断点下载：true 会在localFileName 找是否存在已经下载的文件，并计算文件流大小</param>
/// <returns>是否下载成功</returns>
public static bool FtpDownload(string remoteFileName, string localFileName, bool ifCredential, bool brokenOpen, Action<int, int> updateProgress = null)
{
if (brokenOpen)
{
try
{
long size = 0;
if (File.Exists(localFileName))
{
using (FileStream outputStream = new FileStream(localFileName, FileMode.Open))
{
size = outputStream.Length;
}
}
return FtpBrokenDownload(remoteFileName, localFileName, ifCredential, size, updateProgress);
}
catch
{
throw;
}
}
else
{
return FtpDownload(remoteFileName, localFileName, ifCredential, updateProgress);
}
}
#endregion
#region 上传文件到FTP服务器
/// <summary>
/// 上传文件到FTP服务器
/// </summary>
/// <param name="localFullPath">本地带有完整路径的文件名</param>
/// <param name="updateProgress">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param>
/// <returns>是否下载成功</returns>
public static bool FtpUploadFile(string localFullPathName, Action<int, int> updateProgress = null)
{
FtpWebRequest reqFTP;
Stream stream = null;
FtpWebResponse response = null;
FileStream fs = null;
try
{
FileInfo finfo = new FileInfo(localFullPathName);
if (FtpServerIP == null || FtpServerIP.Trim().Length == 0)
{
throw new Exception("ftp上传目标服务器地址未设置！");
}
Uri uri = new Uri("ftp://" + FtpServerIP + "/" + finfo.Name);
reqFTP = (FtpWebRequest)FtpWebRequest.Create(uri);
reqFTP.KeepAlive = false;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword);//用户，密码
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;//向服务器发出下载请求命令
reqFTP.ContentLength = finfo.Length;//为request指定上传文件的大小
response = reqFTP.GetResponse() as FtpWebResponse;
reqFTP.ContentLength = finfo.Length;
int buffLength = 1024;
byte[] buff = new byte[buffLength];
int contentLen;
fs = finfo.OpenRead();
stream = reqFTP.GetRequestStream();
contentLen = fs.Read(buff, 0, buffLength);
int allbye = (int)finfo.Length;
//更新进度
if (updateProgress != null)
{
updateProgress((int)allbye, 0);//更新进度条
}
int startbye = 0;
while (contentLen != 0)
{
startbye = contentLen + startbye;
stream.Write(buff, 0, contentLen);
//更新进度
if (updateProgress != null)
{
updateProgress((int)allbye, (int)startbye);//更新进度条
}
contentLen = fs.Read(buff, 0, buffLength);
}
stream.Close();
fs.Close();
response.Close();
return true;
}
catch (Exception ex)
{
return false;
throw;
}
finally
{
if (fs != null)
{
fs.Close();
}
if (stream != null)
{
stream.Close();
}
if (response != null)
{
response.Close();
}
}
}
/// <summary>
/// 上传文件到FTP服务器(断点续传)
/// </summary>
/// <param name="localFullPath">本地文件全路径名称：C:\Users\JianKunKing\Desktop\IronPython脚本测试工具</param>
/// <param name="remoteFilepath">远程文件所在文件夹路径</param>
/// <param name="updateProgress">报告进度的处理(第一个参数：总大小，第二个参数：当前进度)</param>
/// <returns></returns>
public static bool FtpUploadBroken(string localFullPath, string remoteFilepath, Action<int, int> updateProgress = null)
{
if (remoteFilepath == null)
{
remoteFilepath = "";
}
string newFileName = string.Empty;
bool success = true;
FileInfo fileInf = new FileInfo(localFullPath);
long allbye = (long)fileInf.Length;
if (fileInf.Name.IndexOf("#") == -1)
{
newFileName = RemoveSpaces(fileInf.Name);
}
else
{
newFileName = fileInf.Name.Replace("#", "＃");
newFileName = RemoveSpaces(newFileName);
}
long startfilesize = GetFileSize(newFileName, remoteFilepath);
if (startfilesize >= allbye)
{
return false;
}
long startbye = startfilesize;
//更新进度
if (updateProgress != null)
{
updateProgress((int)allbye, (int)startfilesize);//更新进度条
}
string uri;
if (remoteFilepath.Length == 0)
{
uri = "ftp://" + FtpServerIP + "/" + newFileName;
}
else
{
uri = "ftp://" + FtpServerIP + "/" + remoteFilepath + "/" + newFileName;
}
FtpWebRequest reqFTP;
// 根据uri创建FtpWebRequest对象
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
// ftp用户名和密码
reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword);
// 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;
// 指定数据传输类型
reqFTP.UseBinary = true;
// 上传文件时通知服务器文件的大小
reqFTP.ContentLength = fileInf.Length;
int buffLength = 2048;// 缓冲大小设置为2kb
byte[] buff = new byte[buffLength];
// 打开一个文件流 (System.IO.FileStream) 去读上传的文件
FileStream fs = fileInf.OpenRead();
Stream strm = null;
try
{
// 把上传的文件写入流
strm = reqFTP.GetRequestStream();
// 每次读文件流的2kb
fs.Seek(startfilesize, 0);
int 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);
startbye += contentLen;
//更新进度
if (updateProgress != null)
{
updateProgress((int)allbye, (int)startbye);//更新进度条
}
}
// 关闭两个流
strm.Close();
fs.Close();
}
catch
{
success = false;
throw;
}
finally
{
if (fs != null)
{
fs.Close();
}
if (strm != null)
{
strm.Close();
}
}
return success;
}
/// <summary>
/// 去除空格
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
private static string RemoveSpaces(string str)
{
string a = "";
CharEnumerator CEnumerator = str.GetEnumerator();
while (CEnumerator.MoveNext())
{
byte[] array = new byte[1];
array = System.Text.Encoding.ASCII.GetBytes(CEnumerator.Current.ToString());
int asciicode = (short)(array[0]);
if (asciicode != 32)
{
a += CEnumerator.Current.ToString();
}
}
string sdate = System.DateTime.Now.Year.ToString() + System.DateTime.Now.Month.ToString() + System.DateTime.Now.Day.ToString() + System.DateTime.Now.Hour.ToString()
+ System.DateTime.Now.Minute.ToString() + System.DateTime.Now.Second.ToString() + System.DateTime.Now.Millisecond.ToString();
return a.Split(‘.‘)[a.Split(‘.‘).Length - 2] + "." + a.Split(‘.‘)[a.Split(‘.‘).Length - 1];
}
/// <summary>
/// 获取已上传文件大小
/// </summary>
/// <param name="filename">文件名称</param>
/// <param name="path">服务器文件路径</param>
/// <returns></returns>
public static long GetFileSize(string filename, string remoteFilepath)
{
long filesize = 0;
try
{
FtpWebRequest reqFTP;
FileInfo fi = new FileInfo(filename);
string uri;
if (remoteFilepath.Length == 0)
{
uri = "ftp://" + FtpServerIP + "/" + fi.Name;
}
else
{
uri = "ftp://" + FtpServerIP + "/" + remoteFilepath + "/" + fi.Name;
}
reqFTP = (FtpWebRequest)FtpWebRequest.Create(uri);
reqFTP.KeepAlive = false;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword);//用户，密码
reqFTP.Method = WebRequestMethods.Ftp.GetFileSize;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
filesize = response.ContentLength;
return filesize;
}
catch
{
return 0;
}
}
//public void Connect(String path, string ftpUserID, string ftpPassword)//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 获取当前目录下明细
/// <summary>
/// 获取当前目录下明细(包含文件和文件夹)
/// </summary>
/// <returns></returns>
public static string[] GetFilesDetailList()
{
string[] downloadFiles;
try
{
StringBuilder result = new StringBuilder();
FtpWebRequest ftp;
ftp = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI));
ftp.Credentials = new NetworkCredential(FtpUserID, FtpPassword);
ftp.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
WebResponse response = ftp.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.Default);
string line = reader.ReadLine();
while (line != null)
{
result.Append(line);
result.Append("\n");
line = reader.ReadLine();
}
result.Remove(result.ToString().LastIndexOf("\n"), 1);
reader.Close();
response.Close();
return result.ToString().Split(‘\n‘);
}
catch (Exception ex)
{
downloadFiles = null;
throw ex;
}
}
/// <summary>
/// 获取当前目录下文件列表(仅文件)
/// </summary>
/// <returns></returns>
public static string[] GetFileList(string mask)
{
string[] downloadFiles;
StringBuilder result = new StringBuilder();
FtpWebRequest reqFTP;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI));
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword);
reqFTP.Method = WebRequestMethods.Ftp.ListDirectory;
WebResponse response = reqFTP.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.Default);
string line = reader.ReadLine();
while (line != null)
{
if (mask.Trim() != string.Empty && mask.Trim() != "*.*")
{
string mask_ = mask.Substring(0, mask.IndexOf("*"));
if (line.Substring(0, mask_.Length) == mask_)
{
result.Append(line);
result.Append("\n");
}
}
else
{
result.Append(line);
result.Append("\n");
}
line = reader.ReadLine();
}
result.Remove(result.ToString().LastIndexOf(‘\n‘), 1);
reader.Close();
response.Close();
return result.ToString().Split(‘\n‘);
}
catch (Exception ex)
{
downloadFiles = null;
throw ex;
}
}
/// <summary>
/// 获取当前目录下所有的文件夹列表(仅文件夹)
/// </summary>
/// <returns></returns>
public static string[] GetDirectoryList()
{
string[] drectory = GetFilesDetailList();
string m = string.Empty;
foreach (string str in drectory)
{
int dirPos = str.IndexOf("<DIR>");
if (dirPos > 0)
{
/*判断 Windows 风格*/
m += str.Substring(dirPos + 5).Trim() + "\n";
}
else if (str.Trim().Substring(0, 1).ToUpper() == "D")
{
/*判断 Unix 风格*/
string dir = str.Substring(54).Trim();
if (dir != "." && dir != "..")
{
m += dir + "\n";
}
}
}
char[] n = new char[] { ‘\n‘ };
return m.Split(n);
}
#endregion
#region 删除文件及文件夹
/// <summary>
/// 删除文件
/// </summary>
/// <param name="fileName"></param>
public static bool Delete(string fileName)
{
try
{
string uri = ftpURI + fileName;
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword);
reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;
string result = String.Empty;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
long size = response.ContentLength;
Stream datastream = response.GetResponseStream();
StreamReader sr = new StreamReader(datastream);
result = sr.ReadToEnd();
sr.Close();
datastream.Close();
response.Close();
return true;
}
catch (Exception ex)
{
return false;
throw ex;
}
}
/// <summary>
/// 删除文件夹
/// </summary>
/// <param name="folderName"></param>
public static void RemoveDirectory(string folderName)
{
try
{
string uri = ftpURI + folderName;
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword);
reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.RemoveDirectory;
string result = String.Empty;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
long size = response.ContentLength;
Stream datastream = response.GetResponseStream();
StreamReader sr = new StreamReader(datastream);
result = sr.ReadToEnd();
sr.Close();
datastream.Close();
response.Close();
}
catch (Exception ex)
{
throw ex;
}
}
#endregion
#region 其他操作
/// <summary>
/// 获取指定文件大小
/// </summary>
/// <param name="filename"></param>
/// <returns></returns>
public static long GetFileSize(string filename)
{
FtpWebRequest reqFTP;
long fileSize = 0;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + filename));
reqFTP.Method = WebRequestMethods.Ftp.GetFileSize;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
fileSize = response.ContentLength;
ftpStream.Close();
response.Close();
}
catch (Exception ex)
{
throw ex;
}
return fileSize;
}
/// <summary>
/// 判断当前目录下指定的子目录是否存在
/// </summary>
/// <param name="RemoteDirectoryName">指定的目录名</param>
public bool DirectoryExist(string RemoteDirectoryName)
{
try
{
string[] dirList = GetDirectoryList();
foreach (string str in dirList)
{
if (str.Trim() == RemoteDirectoryName.Trim())
{
return true;
}
}
return false;
}
catch
{
return false;
}
}
/// <summary>
/// 判断当前目录下指定的文件是否存在
/// </summary>
/// <param name="RemoteFileName">远程文件名</param>
public bool FileExist(string RemoteFileName)
{
string[] fileList = GetFileList("*.*");
foreach (string str in fileList)
{
if (str.Trim() == RemoteFileName.Trim())
{
return true;
}
}
return false;
}
/// <summary>
/// 创建文件夹
/// </summary>
/// <param name="dirName"></param>
public void MakeDir(string dirName)
{
FtpWebRequest reqFTP;
try
{
// dirName = name of the directory to create.
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + dirName));
reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
ftpStream.Close();
response.Close();
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 改名
/// </summary>
/// <param name="currentFilename"></param>
/// <param name="newFilename"></param>
public void ReName(string currentFilename, string newFilename)
{
FtpWebRequest reqFTP;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + currentFilename));
reqFTP.Method = WebRequestMethods.Ftp.Rename;
reqFTP.RenameTo = newFilename;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(FtpUserID, FtpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
ftpStream.Close();
response.Close();
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 移动文件
/// </summary>
/// <param name="currentFilename"></param>
/// <param name="newFilename"></param>
public void MovieFile(string currentFilename, string newDirectory)
{
ReName(currentFilename, newDirectory);
}
/// <summary>
/// 切换当前目录
/// </summary>
/// <param name="DirectoryName"></param>
/// <param name="IsRoot">true 绝对路径 false 相对路径</param>
public void GotoDirectory(string DirectoryName, bool IsRoot)
{
if (IsRoot)
{
ftpRemotePath = DirectoryName;
}
else
{
ftpRemotePath += DirectoryName + "/";
}
ftpURI = "ftp://" + FtpServerIP + "/" + ftpRemotePath + "/";
}
#endregion
}
}
FTPHelper
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.IO;
public class FTPHelper
{
/// <summary>
/// FTP请求对象
/// </summary>
FtpWebRequest request = null;
/// <summary>
/// FTP响应对象
/// </summary>
FtpWebResponse response = null;
/// <summary>
/// FTP服务器地址
/// </summary>
public string ftpURI { get; private set; }
/// <summary>
/// FTP服务器IP
/// </summary>
public string ftpServerIP { get; private set; }
/// <summary>
/// FTP服务器默认目录
/// </summary>
public string ftpRemotePath { get; private set; }
/// <summary>
/// FTP服务器登录用户名
/// </summary>
public string ftpUserID { get; private set; }
/// <summary>
/// FTP服务器登录密码
/// </summary>
public string ftpPassword { get; private set; }
/// <summary>
/// 初始化
/// </summary>
/// <param name="FtpServerIP">FTP连接地址</param>
/// <param name="FtpRemotePath">指定FTP连接成功后的当前目录, 如果不指定即默认为根目录</param>
/// <param name="FtpUserID">用户名</param>
/// <param name="FtpPassword">密码</param>
public FTPHelper(string ftpServerIP, string ftpRemotePath, string ftpUserID, string ftpPassword)
{
this.ftpServerIP = ftpServerIP;
this.ftpRemotePath = ftpRemotePath;
this.ftpUserID = ftpUserID;
this.ftpPassword = ftpPassword;
this.ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath + "/";
}
~FTPHelper()
{
if (response != null)
{
response.Close();
response = null;
}
if (request != null)
{
request.Abort();
request = null;
}
}
/// <summary>
/// 建立FTP链接,返回响应对象
/// </summary>
/// <param name="uri">FTP地址</param>
/// <param name="ftpMethod">操作命令</param>
/// <returns></returns>
private FtpWebResponse Open(Uri uri, string ftpMethod)
{
request = (FtpWebRequest)FtpWebRequest.Create(uri);
request.Method = ftpMethod;
request.UseBinary = true;
request.KeepAlive = false;
request.Credentials = new NetworkCredential(this.ftpUserID, this.ftpPassword);
return (FtpWebResponse)request.GetResponse();
}
/// <summary>
/// 建立FTP链接,返回请求对象
/// </summary>
/// <param name="uri">FTP地址</param>
/// <param name="ftpMethod">操作命令</param>
private FtpWebRequest OpenRequest(Uri uri, string ftpMethod)
{
request = (FtpWebRequest)WebRequest.Create(uri);
request.Method = ftpMethod;
request.UseBinary = true;
request.KeepAlive = false;
request.Credentials = new NetworkCredential(this.ftpUserID, this.ftpPassword);
return request;
}
/// <summary>
/// 创建目录
/// </summary>
/// <param name="remoteDirectoryName">目录名</param>
public void CreateDirectory(string remoteDirectoryName)
{
response = Open(new Uri(ftpURI + remoteDirectoryName), WebRequestMethods.Ftp.MakeDirectory);
}
/// <summary>
/// 更改目录或文件名
/// </summary>
/// <param name="currentName">当前名称</param>
/// <param name="newName">修改后新名称</param>
public void ReName(string currentName, string newName)
{
request = OpenRequest(new Uri(ftpURI + currentName), WebRequestMethods.Ftp.Rename);
request.RenameTo = newName;
response = (FtpWebResponse)request.GetResponse();
}
/// <summary>
/// 切换当前目录
/// </summary>
/// <param name="IsRoot">true:绝对路径 false:相对路径</param>
public void GotoDirectory(string DirectoryName, bool IsRoot)
{
if (IsRoot)
ftpRemotePath = DirectoryName;
else
ftpRemotePath += "/" + DirectoryName;
ftpURI = "ftp://" + ftpServerIP + "/" + ftpRemotePath + "/";
}
/// <summary>
/// 删除目录(包括下面所有子目录和子文件)
/// </summary>
/// <param name="remoteDirectoryName">要删除的带路径目录名：如web/test</param>
/*
* 例：删除test目录
FTPHelper helper = new FTPHelper("x.x.x.x", "web", "user", "password");
helper.RemoveDirectory("web/test");
*/
public void RemoveDirectory(string remoteDirectoryName)
{
GotoDirectory(remoteDirectoryName, true);
var listAll = ListFilesAndDirectories();
foreach (var m in listAll)
{
if (m.IsDirectory)
RemoveDirectory(m.Path);
else
DeleteFile(m.Name);
}
GotoDirectory(remoteDirectoryName, true);
response = Open(new Uri(ftpURI), WebRequestMethods.Ftp.RemoveDirectory);
}
/// <summary>
/// 文件上传
/// </summary>
/// <param name="localFilePath">本地文件路径</param>
public void Upload(string localFilePath)
{
FileInfo fileInf = new FileInfo(localFilePath);
request = OpenRequest(new Uri(ftpURI + fileInf.Name), WebRequestMethods.Ftp.UploadFile);
request.ContentLength = fileInf.Length;
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;
using (var fs = fileInf.OpenRead())
{
using (var strm = request.GetRequestStream())
{
contentLen = fs.Read(buff, 0, buffLength);
while (contentLen != 0)
{
strm.Write(buff, 0, contentLen);
contentLen = fs.Read(buff, 0, buffLength);
}
}
}
}
/// <summary>
/// 删除文件
/// </summary>
/// <param name="remoteFileName">要删除的文件名</param>
public void DeleteFile(string remoteFileName)
{
response = Open(new Uri(ftpURI + remoteFileName), WebRequestMethods.Ftp.DeleteFile);
}
/// <summary>
/// 获取当前目录的文件和一级子目录信息
/// </summary>
/// <returns></returns>
public List<FileStruct> ListFilesAndDirectories()
{
var fileList = new List<FileStruct>();
response = Open(new Uri(ftpURI), WebRequestMethods.Ftp.ListDirectoryDetails);
using (var stream = response.GetResponseStream())
{
using (var sr = new StreamReader(stream))
{
string line = null;
while ((line = sr.ReadLine()) != null)
{
//line的格式如下：
//08-18-13 11:05PM <DIR> aspnet_client
//09-22-13 11:39PM 2946 Default.aspx
DateTime dtDate = DateTime.ParseExact(line.Substring(0, 8), "MM-dd-yy", null);
DateTime dtDateTime = DateTime.Parse(dtDate.ToString("yyyy-MM-dd") + line.Substring(8, 9));
string[] arrs = line.Split(‘ ‘);
var model = new FileStruct()
{
IsDirectory = line.IndexOf("<DIR>") > 0 ? true : false,
CreateTime = dtDateTime,
Name = arrs[arrs.Length - 1],
Path = ftpRemotePath + "/" + arrs[arrs.Length - 1]
};
fileList.Add(model);
}
}
}
return fileList;
}
/// <summary>
/// 列出当前目录的所有文件
/// </summary>
public List<FileStruct> ListFiles()
{
var listAll = ListFilesAndDirectories();
var listFile = listAll.Where(m => m.IsDirectory == false).ToList();
return listFile;
}
/// <summary>
/// 列出当前目录的所有一级子目录
/// </summary>
public List<FileStruct> ListDirectories()
{
var listAll = ListFilesAndDirectories();
var listFile = listAll.Where(m => m.IsDirectory == true).ToList();
return listFile;
}
/// <summary>
/// 判断当前目录下指定的子目录或文件是否存在
/// </summary>
/// <param name="remoteName">指定的目录或文件名</param>
public bool IsExist(string remoteName)
{
var list = ListFilesAndDirectories();
if (list.Count(m => m.Name == remoteName) > 0)
return true;
return false;
}
/// <summary>
/// 判断当前目录下指定的一级子目录是否存在
/// </summary>
/// <param name="RemoteDirectoryName">指定的目录名</param>
public bool IsDirectoryExist(string remoteDirectoryName)
{
var listDir = ListDirectories();
if (listDir.Count(m => m.Name == remoteDirectoryName) > 0)
return true;
return false;
}
/// <summary>
/// 判断当前目录下指定的子文件是否存在
/// </summary>
/// <param name="RemoteFileName">远程文件名</param>
public bool IsFileExist(string remoteFileName)
{
var listFile = ListFiles();
if (listFile.Count(m => m.Name == remoteFileName) > 0)
return true;
return false;
}
/// <summary>
/// 下载
/// </summary>
/// <param name="saveFilePath">下载后的保存路径</param>
/// <param name="downloadFileName">要下载的文件名</param>
public void Download(string saveFilePath, string downloadFileName)
{
using (FileStream outputStream = new FileStream(saveFilePath + "\\" + downloadFileName, FileMode.Create))
{
response = Open(new Uri(ftpURI + downloadFileName), WebRequestMethods.Ftp.DownloadFile);
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);
}
}
}
}
}
public class FileStruct
{
/// <summary>
/// 是否为目录
/// </summary>
public bool IsDirectory { get; set; }
/// <summary>
/// 创建时间
/// </summary>
public DateTime CreateTime { get; set; }
/// <summary>
/// 文件或目录名称
/// </summary>
public string Name { get; set; }
/// <summary>
/// 路径
/// </summary>
public string Path { get; set; }
}
FTPHelper
原文地址：https://www.cnblogs.com/z45281625/p/8796616.html
时间： 2024-11-08 04:41:22