/// <summary>
/// FTP上传文件
/// </summary>
/// <param name="fileUpload">上传控件</param>
/// <param name="ftpServerIP">上传文件服务器IP</param>
/// <param name="ftpUserID">服务器用户名</param>
/// <param name="ftpPassword">服务器密码</param>
/// <returns></returns>
public string Upload(FileUpload fileUpload, string ftpServerIP, string ftpUserID, string ftpPassword)
{
string filename = fileUpload.FileName;
string sRet = "上传成功！";
FileInfo fileInf = new FileInfo(fileUpload.PostedFile.FileName);
string uri = "ftp://" + ftpServerIP + "/" + filename;
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.UploadFile;
// 指定数据传输类型
reqFTP.UseBinary = true;
reqFTP.UsePassive = false;
// 上传文件时通知服务器文件的大小
reqFTP.ContentLength = fileInf.Length;
// 缓冲大小设置为2kb
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;
// 打开一个文件流 (System.IO.FileStream) 去读上传的文件
FileStream fs = fileInf.OpenRead();
try
{
// 把上传的文件写入流
Stream strm = reqFTP.GetRequestStream();
// 每次读文件流的2kb
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);
}
// 关闭两个流
strm.Close();
fs.Close();
}
catch (Exception ex)
{
sRet = ex.Message;
}
return sRet;
}
/// <summary>
/// FTP下载文件
/// </summary>
/// <param name="userId">ftp用户名</param>
/// <param name="pwd">ftp密码</param>
/// <param name="ftpPath">ftp文件路径</param>
/// <param name="filePath">下载保存路径</param>
/// <param name="fileName">ftp文件名</param>
/// <returns></returns>
public string Download(string userId, string pwd, string ftpPath, string filePath, string fileName)
{
string sRet = "下载成功！";
FtpWebRequest reqFTP;
try
{
FileStream outputStream = new FileStream(filePath + fileName, FileMode.Create);
// 根据uri创建FtpWebRequest对象
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpPath + fileName));
// 指定执行什么命令
reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
// 指定数据传输类型
reqFTP.UseBinary = true;
reqFTP.UsePassive = false;
// ftp用户名和密码
reqFTP.Credentials = new NetworkCredential(userId, pwd);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
// 把下载的文件写入流
Stream ftpStream = response.GetResponseStream();
long cl = response.ContentLength;
// 缓冲大小设置为2kb
int bufferSize = 2048;
int readCount;
byte[] buffer = new byte[bufferSize];
// 每次读文件流的2kb
readCount = ftpStream.Read(buffer, 0, bufferSize);
while (readCount > 0)
{
// 把内容从文件流写入
outputStream.Write(buffer, 0, readCount);
readCount = ftpStream.Read(buffer, 0, bufferSize);
}
//关闭两个流和ftp连接
ftpStream.Close();
outputStream.Close();
response.Close();
}
catch (Exception ex)
{
sRet=ex.Message;
}
//返回下载结果（是否下载成功）
return sRet;
}
/// <summary>
/// FTP删除文件
/// </summary>
/// <param name="ftpPath">ftp文件路径</param>
/// <param name="userId">ftp用户名</param>
/// <param name="pwd">ftp密码</param>
/// <param name="fileName">ftp文件名</param>
/// <returns></returns>
public string DeleteFile(string ftpPath,string userId,string pwd, string fileName)
{
string sRet = "删除成功！";
FtpWebResponse Respose = null;
FtpWebRequest reqFTP = null;
Stream localfile = null;
Stream stream = null;
try
{
//根据uri创建FtpWebRequest对象
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(string.Format(@"{0}{1}", ftpPath, fileName)));
//提供账号密码的验证
reqFTP.Credentials = new NetworkCredential(userId, pwd);
//默认为true是上传完后不会关闭FTP连接
reqFTP.KeepAlive = false;
//执行删除操作
reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;
Respose = (FtpWebResponse)reqFTP.GetResponse();
}
catch (Exception ex)
{
sRet = ex.Message;
}
finally
{
//关闭连接跟流
if (Respose != null)
Respose.Close();
if (localfile != null)
localfile.Close();
if (stream != null)
stream.Close();
}
//返回执行状态
return sRet;
}
/// <summary>
/// FTP创建目录
/// </summary>
/// <param name="dirName">目录名</param>
/// <param name="ftpServerIP">服务器地址</param>
/// <param name="ftpUserID">ftp用户名</param>
/// <param name="ftpPassword">ftp密码</param>
/// <returns></returns>
public string CreateDir(string dirName, string ftpServerIP, string ftpUserID, string ftpPassword)
{
string sRet = "OK";
try
{
string uri = ftpServerIP + "/" + dirName;
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.MakeDirectory;
// 指定数据传输类型
reqFTP.UseBinary = true;
FtpWebResponse respFTP = (FtpWebResponse)reqFTP.GetResponse();
respFTP.Close();
}
catch (Exception ex)
{
sRet = ex.Message;
}
return sRet;
}
