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I am using the following script file (ftp_test_2.ps1) to transfer files to an ftp server:

#we specify the directory where all files that we want to upload are contained 
$Dir="C:/Users/you-who/Documents/textfiles/"
#ftp server

$ftp = "ftp://192.168.100.101:21/"
$user = "aP_RDB"
$pass = "pw"
$webclient = New-Object System.Net.WebClient 
$webclient.Credentials = New-Object System.Net.NetworkCredential($user,$pass)  

#list every txt file
foreach($item in (dir $Dir "*.txt"))
{ 
    "creating URI..."
    $uri = New-Object System.Uri($ftp+$item.Name) 
    $uri
    "attempting upload... $item"
    $webclient.UploadFile($uri, $item.FullName) 
 }

This works fine when the $ftp is set to the local host and also connecting to another ftp test server. However, on the production ftp server, the server rejects the upload with the Powershell error:

Exception calling "UploadFile" with "2" argument(s): "The remote server returned an error: 227 Entering Passive Mode (192,168,101,99,228,67)."

At C:\Users\you-who\Documents\SandBox\ftp_test_2.ps1:17 char:24

\+$webclient.UploadFile <<<< ($uri, $item.FullName)
     \+CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
     \+ FullyQualifiedErrorId : DotNetMethodExceptionPP

On the production server there is a FileZilla server running. The messages in the server UI do not "seem" to show any errors:

(000029)2/5/2013 5:58:53 AM - (not logged in) (192.168.100.101)> USER aP_RDB
(000029)2/5/2013 5:58:53 AM - (not logged in) (192.168.100.101)> 331 Password required for ap_rdb
(000029)2/5/2013 5:58:53 AM - (not logged in) (192.168.100.101)> PASS *******
(000029)2/5/2013 5:58:53 AM - ap_rdb (192.168.100.101)> 230 Logged on
(000029)2/5/2013 5:58:53 AM - ap_rdb (192.168.100.101)> OPTS utf8 on
(000029)2/5/2013 5:58:53 AM - ap_rdb (192.168.100.101)> 200 UTF8 mode enabled
(000029)2/5/2013 5:58:53 AM - ap_rdb (192.168.100.101)> PWD
(000029)2/5/2013 5:58:53 AM - ap_rdb (192.168.100.101)> 257 "/" is current directory.
(000029)2/5/2013 5:58:53 AM - ap_rdb (192.168.100.101)> CWD /
(000029)2/5/2013 5:58:53 AM - ap_rdb (192.168.100.101)> 250 CWD successful. "/" is current directory.
(000029)2/5/2013 5:58:53 AM - ap_rdb (192.168.100.101)> TYPE I
(000029)2/5/2013 5:58:53 AM - ap_rdb (192.168.100.101)> 200 Type set to I
(000029)2/5/2013 5:58:53 AM - ap_rdb (192.168.100.101)> PASV
(000029)2/5/2013 5:58:53 AM - ap_rdb (192.168.100.101)> 227 Entering Passive Mode   (192,168,101,99,228,74)
(000029)2/5/2013 5:59:14 AM - ap_rdb (192.168.100.101)> disconnected.

From my FileZilla ftp client on my laptop, I can connect and put/get files on the production ftp server IF I set the "transfer mode" to "active" (in the FileZilla client) for the connection to the production ftp server.

Since I cannot change the production server, is there a way to set the transfer mode to "active" from within Powershell somewhere in my script above? I searched the web and MS sites for help on this, but could not find anything on . Any help greatly appreciated.

-Dave Ef

4

1 回答 1

5

即使您最终选择了不同的路线 - 我决定回来并提供有关如何子类WebClient并确保所有 FTP 请求都是“活动”传输的答案。这需要 PowerShell v2 及更高版本添加新类型。如果您需要在 PowerShell v1 中执行此操作，您可以将类定义编译为程序集并加载它。

另外值得注意的是，您可以轻松地以与属性相同的方式公开UseBinaryFtpWebRequest 类的UsePassive属性 - 如果您还需要设置它。

$def = @"
public class ActiveFtpWebClient : System.Net.WebClient
{
  protected override System.Net.WebRequest GetWebRequest(System.Uri address)
  {
    System.Net.WebRequest request = base.GetWebRequest(address);
    if (request is System.Net.FtpWebRequest)
    {
      (request as System.Net.FtpWebRequest).UsePassive = false;
    }
    return request;
  }
}
"@

Add-Type -TypeDefinition $def
$ftp = New-Object ActiveFtpWebClient
$ftp.DownloadString("ftp://server/file.txt")
于 2013-03-15T16:14:23.747 回答