/// <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>
public void Download(string remoteFileName, string localFileName, bool ifCredential = false, Action <int, int> updateProgress = null)
{
using (FileStream outputStream = new FileStream(localFileName, FileMode.Create))
{
if (FtpServer == null || FtpServer.Trim().Length == 0)
{
throw new Exception("ftp下载目标服务器地址未设置！");
}
Uri uri = new Uri("ftp://" + FtpServer + "/" + remoteFileName);
var ftpsize = (FtpWebRequest)WebRequest.Create(uri);
ftpsize.UseBinary = true;
var reqFtp = (FtpWebRequest)WebRequest.Create(uri);
reqFtp.UseBinary = true;
reqFtp.KeepAlive = false;
if (ifCredential) //使用用户身份认证
{
ftpsize.Credentials = new NetworkCredential(Username, Password);
reqFtp.Credentials = new NetworkCredential(Username, Password);
}
ftpsize.Method = WebRequestMethods.Ftp.GetFileSize;
using (FtpWebResponse re = (FtpWebResponse)ftpsize.GetResponse())
{
long totalBytes = re.ContentLength;
reqFtp.Method = WebRequestMethods.Ftp.DownloadFile;
var response = (FtpWebResponse)reqFtp.GetResponse();
using (response)
{
var ftpStream = response.GetResponseStream();
//更新进度
using (ftpStream)
{
updateProgress?.Invoke((int)totalBytes, 0); //更新进度条
long totalDownloadedByte = 0;
int bufferSize = 1024 * 1024;
byte[] buffer = new byte[bufferSize];
if (ftpStream != null)
{
var readCount = ftpStream.Read(buffer, 0, bufferSize);
while (readCount > 0)
{
totalDownloadedByte = readCount + totalDownloadedByte;
outputStream.Write(buffer, 0, readCount);
//更新进度
updateProgress?.Invoke((int)totalBytes, (int)totalDownloadedByte); //更新进度条
readCount = ftpStream.Read(buffer, 0, bufferSize);
}
}
}
}
}
}
}
/// <summary>
/// 上传文件到FTP服务器
/// </summary>
/// <param name="relativePath">相对目录</param>
/// <param name="localFullPathName">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>
public void UploadFile(string relativePath, string localFullPathName, Action <int, int> updateProgress = null)
{
FileInfo finfo = new FileInfo(localFullPathName);
if (FtpServer == null || FtpServer.Trim().Length == 0)
{
throw new Exception("ftp上传目标服务器地址未设置！");
}
Uri uri = new Uri("ftp://" + FtpServer + "/" + relativePath + "/" + finfo.Name);
var reqFtp = (FtpWebRequest)WebRequest.Create(uri);
reqFtp.KeepAlive = false;
reqFtp.UseBinary = true;
reqFtp.Credentials = new NetworkCredential(Username, Password); //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
int buffLength = 1024 * 1024;
byte[] buff = new byte[buffLength];
using (var fs = finfo.OpenRead())
{
using (var stream = reqFtp.GetRequestStream())
{
var contentLen = fs.Read(buff, 0, buffLength);
int allbye = (int)finfo.Length;
//更新进度
updateProgress?.Invoke(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
updateProgress?.Invoke(allbye, startbye); //更新进度条
contentLen = fs.Read(buff, 0, buffLength);
}
}
}
}
/// <summary>
/// 上传文件到FTP服务器
/// </summary>
/// <param name="relativePath">相对目录</param>
/// <param name="localFullPathName">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>
public void UploadFile(string relativePath, string localFullPathName, Action <int, int> updateProgress = null)
{
var finfo = new FileInfo(localFullPathName);
if (FtpServer == null || FtpServer.Trim().Length == 0)
{
throw new Exception("ftp上传目标服务器地址未设置！");
}
var reqFtp = GenerateFtpReq(StringUtils.GenerateUri(new string[] { FtpServer, relativePath, finfo.Name }, "ftp://"), WebRequestMethods.Ftp.UploadFile);
reqFtp.UseBinary = true;
reqFtp.ContentLength = finfo.Length; //为request指定上传文件的大小
int buffLength = 1024 * 1024;
byte[] buff = new byte[buffLength];
using (var fs = finfo.OpenRead())
{
using (var stream = reqFtp.GetRequestStream())
{
var contentLen = fs.Read(buff, 0, buffLength);
int allbye = (int)finfo.Length;
//更新进度
updateProgress?.Invoke(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
updateProgress?.Invoke(allbye, startbye); //更新进度条
contentLen = fs.Read(buff, 0, buffLength);
}
}
}
}
