使用WebClient在PowerShell脚本中将FTP从二进制文件更改为ascii [英] Changing FTP from binary to ascii in PowerShell script using WebClient

问题描述

简单的PowerShell脚本。它下载一个没有问题的文件（二进制文件）。我需要它在ascii。

$ File =c：\temp\ftpfile.txt
$ ftp =ftp：// myusername：mypass@12.345.6.78/'report';
$ webclient = New-Object -TypeName System.Net.WebClient;
$ uri = New-Object -TypeName System.Uri -ArgumentList $ ftp;
$ webclient.DownloadFile（$ uri，$ File）;


解决方案

WebClient 不支持ascii / text FTP模式。

使用 FtpWebRequest 取而代之，并将 .UseBinary 为false。

$ b

  $ File =c：\temp\ftpfile.txt
 $ ftp = FTP：//名为myUsername：mypass@12.345.6.78/'report'; 
 
 $ ftprequest = [System.Net.FtpWebRequest] :: Create（$ ftp）
 
 $ ftprequest.Method = [System.Net.WebRequestMethods + Ftp] :: DownloadFile 
 $ ftprequest.UseBinary = $ false 
 
 $ ftpresponse = $ ftprequest.GetResponse（）
 
 $ responsestream = $ ftpresponse.GetResponseStream（）
 
 $ targetfile = New-Object IO.FileStream（$ File，[IO.FileMode] :: Create）
 [byte []] $ readbuffer = New-Object byte [] 1024 
 
 
 {
 $ readlength = $ responsestream.Read（$ readbuffer，0，1024）
 $ targetfile.Write（$ readbuffer，0，$ readlength）
} 
 while（$ readlength -ne 0）
 
 $ targetfile.close（）
  

参考：什么是在PowerShell中自动安全FTP的最佳方式？

$请注意， WebClient 使用 FtpWebRequest 内部，但不公开它的 .UseBinary 属性。

Simple PowerShell script. It downloads a file (in binary) with no issues. I need it in ascii.

$File = "c:\temp\ftpfile.txt"
$ftp = "ftp://myusername:mypass@12.345.6.78/'report'";
$webclient = New-Object -TypeName System.Net.WebClient;
$uri = New-Object -TypeName System.Uri -ArgumentList $ftp;
$webclient.DownloadFile($uri, $File);

解决方案

The WebClient does not support ascii/text FTP mode.

Use FtpWebRequest instead and set .UseBinary to false.

$File = "c:\temp\ftpfile.txt"
$ftp = "ftp://myusername:mypass@12.345.6.78/'report'";

$ftprequest = [System.Net.FtpWebRequest]::Create($ftp)

$ftprequest.Method = [System.Net.WebRequestMethods+Ftp]::DownloadFile
$ftprequest.UseBinary = $false

$ftpresponse = $ftprequest.GetResponse()

$responsestream = $ftpresponse.GetResponseStream()

$targetfile = New-Object IO.FileStream($File, [IO.FileMode]::Create)
[byte[]]$readbuffer = New-Object byte[] 1024

do
{
    $readlength = $responsestream.Read($readbuffer, 0, 1024)
    $targetfile.Write($readbuffer, 0, $readlength)
}
while ($readlength -ne 0)

$targetfile.close()

Reference: What's the best way to automate secure FTP in PowerShell?

---

Note that the WebClient uses the FtpWebRequest internally, but does not expose its .UseBinary property.

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