using System.IO;
using System.Net;
using System.Text;
using System.Diagnostics;
using System.Text.RegularExpressions;

//从ftp上下载文件
private void Download(string filePath, string ImageSrc, string ImageName, string ftpServerIP, string

ftpUserName, string ftpPwd)
{
if (!Directory.Exists(filePath))
{
Directory.CreateDirectory(filePath);
}
using (FileStream OutputStream = new FileStream(filePath + "\\" + ImageName, FileMode.Create))
{
FtpWebRequest ReqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" +

ImageSrc));

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();
}

}
//从服务器上传文件到FTP上
private 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();
}

}
//删除服务器上的文件
private void DeleteWebServerFile(string sFilePath)
{
if (File.Exists(sFilePath))
{
File.Delete(sFilePath);
}
}
//删除FTP上的文件
private 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();
}
}
}

}

}
//检查文件是否存在
public 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;
}
}
//从客户端上传文件到FTP上
private void UploadFtp(HttpPostedFile sFilePath, string filename, string FolderName, string ftpServerIP,

string ftpUserName, string ftpPwd)
{
//获取的服务器路径
//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;
//设置缓存
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();
}

}
//创建目录
private void CreateDirectory(string FolderName, string ftpServerIP, string ftpUserName, string ftpPwd)
{
//创建日期目录
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
{
ClientScript.RegisterStartupScript(this.GetType(), "", "<script>alert('系统忙,请稍后再

试!');location.href=location.href;</script>");
}
}
//检查日期目录和文件是否存在
private static Regex regexName = new Regex(@"[^\s]*$", RegexOptions.Compiled);
private bool CheckFileOrPath(string FolderName, string ftpServerIP, string ftpUserName, string ftpPwd)
{
//检查一下日期目录是否存在
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 返回的字串格式不正确");
}

string path = gc[0].Value;
if (path == FolderName)
{
return true;
}

line = sr.ReadLine();
}
}

return false;

}
}



























































































































































































































































































































































