#获取文件列表
$listFTP = [system.net.ftpwebrequest] [system.net.webrequest]::create("ftpurl")
$listFTP.UseBinary = $true;
$listFTP.Credentials = New-Object System.Net.NetworkCredential("username","password")
$listFTP.Method=[system.net.WebRequestMethods+ftp]::listdirectorydetails
$listFTP.Timeout=2000
$listFTP.ReadWriteTimeout=2000
$response = $listFTP.getresponse()
$stream = New-Object System.Io.StreamReader($response.getresponsestream(),[System.Text.Encoding]::UTF8)
while(-not $stream.EndOfStream){
$stream.ReadLine()
}
$stream.Close()
$response.Close()

#上传文件
$fileinf=New-Object System.Io.FileInfo("localfilename")
$upFTP = [system.net.ftpwebrequest] [system.net.webrequest]::create("ftpurl"+$fileinf.name)
$upFTP.UseBinary = $true;
$upFTP.Credentials = New-Object System.Net.NetworkCredential("username","password")
$upFTP.Method=[system.net.WebRequestMethods+ftp]::UploadFile
$upFTP.KeepAlive=$false
$sourceStream = New-Object System.Io.StreamReader($fileInf.fullname)
$fileContents = [System.Text.Encoding]::UTF8.GetBytes($sourceStream.ReadToEnd())
$sourceStream.Close();
$upFTP.ContentLength = $fileContents.Length;
$requestStream = $upFTP.GetRequestStream();
$requestStream.Write($fileContents, 0, $fileContents.Length);
$requestStream.Close();
$response =$upFTP.GetResponse();
$response.StatusDescription
$response.Close(); 
 
#ftpurl:ftp路径
#username：ftp用户名
#password：ftp密码
#localfilename：要上传的文件名
下载和续传因为没有业务需求所以没做出来，日后有心情再做