# Config

 $today = Get-Date -UFormat "%Y%m%d"

 $LogFilePath = "d:\ftpLog_$today.txt"

 $UserName = "ftpuser"

 $Password = "Password01!"

 function REM($Msg){

     $now= Get-Date

     write-host "$now : $Msg" -foregroundcolor Yellow

     Add-Content $LogFilePath "$now : $Msg"

 }

 function DownloadFile($Username,$Password,$RemoteFile,$LocalFile){

     try

     {

         $ErrorActionPreference="Stop";

         if($RemoteFile -eq $null){

             REM "RemoteFile is null"

             return

         }

         if($LocalFile -eq $null){

             REM "LocalFile is null"

             return

         }

         $FTPRequest = [System.Net.FtpWebRequest]::Create($RemoteFile)

         $FTPRequest.Credentials = New-Object System.Net.NetworkCredential($Username,$Password)

         $FTPRequest.Method = [System.Net.WebRequestMethods+Ftp]::DownloadFile

         $FTPRequest.UseBinary = $true

         $FTPRequest.KeepAlive = $false

         # Send the ftp request

         $FTPResponse = $FTPRequest.GetResponse()

         # Get a download stream from the server response

         $ResponseStream = $FTPResponse.GetResponseStream()

         # Create the target file on the local system and the download buffer

         $LocalFileFile = New-Object IO.FileStream ($LocalFile,[IO.FileMode]::Create)

         [byte[]]$ReadBuffer = New-Object byte[] 1024

         if($ResponseStream -eq $null){

             return

         }

         # Loop through the download

         do {

             $ReadLength = $ResponseStream.Read($ReadBuffer,0,1024)

             $LocalFileFile.Write($ReadBuffer,0,$ReadLength) 

         }

         while ($ReadLength -ne 0)

         REM "$RemoteFile 下载成功。"

     }

     catch

     {

         REM("Exception Msg: $_")

     }

 }

 DownloadFile $UserName $Password "ftp://192.168.1.103/frate.csv" "c:\downloads\frate.csv"

 DownloadFile $UserName $Password "ftp://192.168.1.103/bcirfp.csv" "c:\downloads\bcirfp.csv"