[Powershell] FTP Download File

 1 # Config
 2 $today = Get-Date -UFormat "%Y%m%d"
 3 $LogFilePath = "d:ftpLog_$today.txt"
 4 $UserName = "ftpuser"
 5 $Password = "Password01!"
 6 
 7 
 8 function REM($Msg){
 9     $now= Get-Date
10     write-host "$now : $Msg" -foregroundcolor Yellow
11     Add-Content $LogFilePath "$now : $Msg"
12 }
13 
14 function DownloadFile($Username,$Password,$RemoteFile,$LocalFile){
15 
16     try
17     {
18         $ErrorActionPreference="Stop";
19 
20         if($RemoteFile -eq $null){ 
21             REM "RemoteFile is null"
22             return 
23         }
24         if($LocalFile -eq $null){ 
25             REM "LocalFile is null"
26             return 
27         }
28     
29         $FTPRequest = [System.Net.FtpWebRequest]::Create($RemoteFile)
30         $FTPRequest.Credentials = New-Object System.Net.NetworkCredential($Username,$Password) 
31         $FTPRequest.Method = [System.Net.WebRequestMethods+Ftp]::DownloadFile 
32         $FTPRequest.UseBinary = $true
33         $FTPRequest.KeepAlive = $false
34         # Send the ftp request
35         $FTPResponse = $FTPRequest.GetResponse() 
36         # Get a download stream from the server response 
37         $ResponseStream = $FTPResponse.GetResponseStream() 
38         # Create the target file on the local system and the download buffer 
39         $LocalFileFile = New-Object IO.FileStream ($LocalFile,[IO.FileMode]::Create) 
40         [byte[]]$ReadBuffer = New-Object byte[] 1024 
41         if($ResponseStream -eq $null){
42             return
43         }
44         # Loop through the download 
45         do { 
46             $ReadLength = $ResponseStream.Read($ReadBuffer,0,1024) 
47             $LocalFileFile.Write($ReadBuffer,0,$ReadLength) 
48         
49         } 
50         while ($ReadLength -ne 0)
51 
52         REM "$RemoteFile 下载成功。"
53     }
54     catch
55     {
56         REM("Exception Msg: $_")
57     }
58 
59 }
60 
61 
62 
63 DownloadFile $UserName $Password "ftp://192.168.1.103/frate.csv" "c:downloadsfrate.csv"
64 DownloadFile $UserName $Password "ftp://192.168.1.103/bcirfp.csv" "c:downloadscirfp.csv"
连接Linux机器上的ftp时候，切记文件名是区分大小写滴！