FTP文件上传，下载，删除文件，检查文件(目录)存在，新建目录,获取文件夹下文件列表
public class FTPManage
{
private string userName = string.Empty;
private string password = string.Empty;
/// <summary>
/// 待下载文件路径
/// </summary>
private string ftppath = string.Empty;
private string url = null;
private string filePath = null;//文件下载所存放位置
/// <summary>
/// 连接到ftp指定路径的目录
/// </summary>
/// <param name="ftpDirPath">ftp上文件存放或下载的路径</param>
/// <param name="ftpUserID">ftp账号</param>
/// <param name="ftpPassword">密码</param>
public FTPManage(string ftpDirPath, string ftpUserID, string ftpPassword)
{
this.userName = ftpUserID;
this.password = ftpPassword;
this.ftppath = ftpDirPath;
}
/// <summary>
/// 上传文件
/// </summary>
/// <param name="filePath">文件路径</param>
/// <param name="fileName">文件名</param>
/// <param name="parentFolderName">所在文件夹</param>
/// <returns>上传是否成功</returns>
public bool UploadFile(string filePath, string fileName, string parentFolderName)
{
bool result = false;
try
{
if (!this.CheckDirectoryIsExists(parentFolderName))
{
this.CreateDirectory(parentFolderName);
}
this.filePath = filePath;
this.url = ftppath + "/" + parentFolderName + "/" + fileName;
Thread objThread = new Thread(new ThreadStart(this.SubUploadFile));
objThread.IsBackground = true;
objThread.Start();
objThread.Join();
result = true;
}
catch (Exception objException)
{
throw objException;
}
return result;
}
/// <summary>
/// 子上传文件
/// </summary>
private void SubUploadFile()
{
try
{
//创建ftp文件请求
FtpWebRequest objFtpWebRequest = FtpWebRequest.Create(new Uri(this.url)) as FtpWebRequest;
objFtpWebRequest.Credentials = new NetworkCredential(userName, password);
objFtpWebRequest.KeepAlive = false;
objFtpWebRequest.Method = WebRequestMethods.Ftp.UploadFile;
objFtpWebRequest.UseBinary = true;
objFtpWebRequest.KeepAlive = false;
byte[] buffer = new byte[4096];
int count = 0;
//读取本地文件流
using (FileStream objFileStream = new FileInfo(this.filePath).OpenRead())
{
using (Stream objStream = objFtpWebRequest.GetRequestStream())
{
while ((count = objFileStream.Read(buffer, 0, buffer.Length)) > 0)
{
objStream.Write(buffer, 0, count);
objStream.Flush();
}
objFileStream.Close();
objStream.Close();
}
}
}
catch (Exception objException)
{
throw objException;
}
}
/// <summary>
/// 下载文件
/// </summary>
/// <param name="filePath">文件路径</param>
/// <param name="fileName">文件名</param>
/// <param name="parentFolderName">所在文件夹</param>
/// <returns>下载是否成功</returns>
public bool DownloadFile(string filePath, string fileName, string parentFolderName)
{
bool result = false;
try
{
if (this.CheckFileIsExists(fileName, parentFolderName))
{
this.filePath = filePath;
this.url = ftppath + "/" + parentFolderName + "/" + fileName;
Thread objThread = new Thread(new ThreadStart(this.SubDownloadFile));
objThread.IsBackground = true;
objThread.Start();
objThread.Join();
result = true;
}
else
{
throw new Exception("文件不存在，下载失败！");
}
}
catch (Exception objException)
{
//throw objException;
}
return result;
}
/// <summary>
/// 子下载文件
/// </summary>
private void SubDownloadFile()
{
try
{
FileStream objFileStream = new FileStream(this.filePath, FileMode.Create, FileAccess.Write, FileShare.None);
BinaryWriter objBinaryWriter = new BinaryWriter(objFileStream);
FtpWebRequest objFtpWebRequest = FtpWebRequest.Create(new Uri(this.url)) as FtpWebRequest;
objFtpWebRequest.Credentials = new NetworkCredential(userName, password);
objFtpWebRequest.KeepAlive = false;
objFtpWebRequest.Method = WebRequestMethods.Ftp.DownloadFile;
objFtpWebRequest.UseBinary = true;
byte[] buffer = new byte[4096];
int count = 0;
using (Stream objStream = objFtpWebRequest.GetResponse().GetResponseStream())
{
while ((count = objStream.Read(buffer, 0, buffer.Length)) > 0)
{
objBinaryWriter.Write(buffer, 0, count);
objBinaryWriter.Flush();
}
objBinaryWriter.Close();
objFileStream.Close();
objStream.Close();
}
}
catch
{
throw;
}
}
/// <summary>
/// 删除文件
/// </summary>
/// <param name="fileName">文件名</param>
/// <param name="parentFolderName">所在文件夹</param>
/// <returns>删除是否成功</returns>
public bool DeleteFile(string fileName, string parentFolderName)
{
bool result = false;
try
{
if (this.CheckFileIsExists(fileName, parentFolderName))
{
this.url = ftppath + "/" + parentFolderName + "/" + fileName;
FtpWebRequest objFWR = FtpWebRequest.Create(new Uri(this.url)) as FtpWebRequest;
objFWR.Credentials = new NetworkCredential(userName, password);
objFWR.KeepAlive = false;
objFWR.Method = WebRequestMethods.Ftp.DeleteFile;
objFWR.UseBinary = true;
objFWR.GetResponse().GetResponseStream().Close();
result = true;
}
else
{
result = false;
}
}
catch (Exception objException)
{
throw objException;
}
return result;
}
/// <summary>
/// 删除文件夹
/// </summary>
/// <param name="fileName">文件名</param>
/// <param name="parentFolderName">所在文件夹</param>
/// <returns>删除是否成功</returns>
public bool DeleteDirectory(string folderName)
{
bool result = false;
try
{
if (this.CheckDirectoryIsExists(folderName))
{
this.url = ftppath + "/" + folderName;
FtpWebRequest objFWR = FtpWebRequest.Create(new Uri(this.url)) as FtpWebRequest;
objFWR.Credentials = new NetworkCredential(userName, password);
//objFWR.KeepAlive = false;
objFWR.Method = WebRequestMethods.Ftp.RemoveDirectory;
//objFWR.UseBinary = true;
objFWR.GetResponse().Close();
result = true;
}
else
{
result = false;
}
}
catch (Exception objException)
{
throw objException;
}
return result;
}
/// <summary>
/// 检查文件是否存在
/// </summary>
/// <param name="fileName">文件名</param>
/// <param name="parentFolderName">所在文件夹</param>
/// <returns>是否存在</returns>
public bool CheckFileIsExists(string fileName, string parentFolderName)
{
bool result = false;
try
{
StringBuilder objSB = new StringBuilder();
FtpWebRequest objFWR = FtpWebRequest.Create(new Uri(ftppath + "/" + parentFolderName + "/")) as FtpWebRequest;
objFWR.UseBinary = true;
objFWR.Credentials = new NetworkCredential(userName, password);
objFWR.KeepAlive = false;
objFWR.Method = WebRequestMethods.Ftp.ListDirectory;
using (WebResponse objWebResponse = objFWR.GetResponse())
{
using (StreamReader objSR = new StreamReader(objWebResponse.GetResponseStream()))
{
string line = objSR.ReadLine();
while (!String.IsNullOrEmpty(line))
{
objSB.Append(line);
objSB.Append("\n");
line = objSR.ReadLine();
}
objSR.Close();
objWebResponse.Close();
}
}
if (objSB.ToString().Contains(fileName))
{
result = true;
}
}
catch (Exception objException)
{
throw objException;
}
return result;
}
/// <summary>
/// 检查目录是否存在
/// </summary>
/// <param name="parentFolderName">目录名称</param>
/// <returns>目录是否存在</returns>
public bool CheckDirectoryIsExists(string parentFolderName)
{
bool result = false;
try
{
Regex regexName = new Regex(@"[^\s]*$", RegexOptions.Compiled);
FtpWebRequest objFWR = FtpWebRequest.Create(new Uri(ftppath + "/")) as FtpWebRequest;
objFWR.UseBinary = true;
objFWR.Credentials = new NetworkCredential(userName, password);
objFWR.KeepAlive = false;
objFWR.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
using (Stream objStream = objFWR.GetResponse().GetResponseStream())
{
using (StreamReader objSR = new StreamReader(objStream))
{
string line = objSR.ReadLine();
while (!String.IsNullOrEmpty(line))
{
GroupCollection objGC = regexName.Match(line).Groups;
if (objGC.Count.Equals(1))
{
string path = objGC[0].Value.Trim();
if (path.Equals(parentFolderName))
{
result = true;
break;
}
else
{
line = objSR.ReadLine();
}
}
}
}
}
}
catch (Exception objException)
{
throw objException;
}
return result;
}
/// <summary>
/// 创建目录
/// </summary>
/// <param name="parentFolderName">目录名称</param>
/// <returns>创建是否成功</returns>
public bool CreateDirectory(string parentFolderName)
{
bool result = false;
try
{
FtpWebRequest objFWR = FtpWebRequest.Create(new Uri(ftppath + "/" + parentFolderName + "/")) as FtpWebRequest;
objFWR.UseBinary = true;
objFWR.Credentials = new NetworkCredential(userName, password);
objFWR.KeepAlive = false;
objFWR.Method = WebRequestMethods.Ftp.MakeDirectory;
objFWR.GetResponse().GetResponseStream().Close();
result = true;
}
catch (Exception objException)
{
throw objException;
}
return result;
}
/// <summary>
/// 获取Ftp服务器上指定目录下的所有文件和文件夹
/// </summary>
/// <returns></returns>
public string[] GetFileList(string parentFolderName)
{
string[] downloadFiles;
StringBuilder result = new StringBuilder();
FtpWebRequest reqFTP;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftppath + "/" + parentFolderName + "/"));
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(userName, password);
reqFTP.Method = WebRequestMethods.Ftp.ListDirectory;
reqFTP.KeepAlive = false;
WebResponse response = reqFTP.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding("GB2312"));
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;
return downloadFiles;
}
}
}
