使用 virtualbox 中的 powershell 从 ftp 下载/上传文件答案

【问题标题】：Downloading/upload files from ftp with powershell from virtualbox使用 virtualbox 中的 powershell 从 ftp 下载/上传文件
【发布时间】：2017-06-23 07:37:59
【问题描述】：

您好，我正在尝试将文件上传到运行 linux 和 ftp 服务器的虚拟机。我在代码中有一个异常：

    Exception calling "GetRequestStream" with "0" argument(s): "The requested FTP command is not supported when using HTTP proxy."
At D:\Users\h.yordanov\Desktop\PowerShellFtp-master\script.ps1:21 char:1
+ $Run = $FTPRequest.GetRequestStream()
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : InvalidOperationException

我使用的脚本是这样的：

    # Config
$Username = "sammy"
$Password = "1111"
$LocalFile = "C:\fff\medias\1618716-maybach-exelero.jpg"
$RemoteFile = "ftp://192.168.56.101/files/1618716-maybach-exelero.jpg"

# Create FTP Rquest Object

    $FTPRequest = [System.Net.FtpWebRequest]::Create("$RemoteFile")
    $FTPRequest = [System.Net.FtpWebRequest]$FTPRequest
    $FTPRequest.Method = [System.Net.WebRequestMethods+Ftp]::UploadFile

    $FTPRequest.Credentials = new-object System.Net.NetworkCredential($Username, $Password)
    $FTPRequest.UseBinary = $true
    $FTPRequest.UsePassive = $true
    # Read the File for Upload
    $FileContent = gc -en byte $LocalFile
    $FTPRequest.ContentLength = $FileContent.Length
    # Get Stream Request by bytes
    $Run = $FTPRequest.GetRequestStream()
    $Run.Write($FileContent, 0, $FileContent.Length)
    # Cleanup
    $Run.Close()

$Run.Dispose()

powershell 版本是 5.1。我在主机上有代理。

编辑：我现在正在使用下载命令：

# Config
$Username = "sammy"
$Password = "1111"
$LocalFile = "C:\fff\medias\1618716-maybach-exelero.jpg"
$RemoteFile = "ftp://192.168.56.101/files/1618716-maybach-exelero.jpg"

# Create a FTPWebRequest 
$FTPRequest = [System.Net.FtpWebRequest]::Create($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 
# Loop through the download 
    do { 
        $ReadLength = $ResponseStream.Read($ReadBuffer,0,1024) 
        $LocalFileFile.Write($ReadBuffer,0,$ReadLength) 
    } 
    while ($ReadLength -ne 0)

但是 atm 我有这个错误：

Exception calling "GetResponse" with "0" argument(s): "The remote server returned an error: (403) Forbidden."
At D:\Users\h.yordanov\Desktop\PowerShellFtp-master\script.ps1:16 char:1
+ $FTPResponse = $FTPRequest.GetResponse()
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : WebException

第二次编辑：

# Load WinSCP .NET assembly
Add-Type -Path "D:\Users\h.yordanov\Desktop\PowerShellFtp-master\WinSCPnet.dll"

# Set up session options
$sessionOptions = New-Object WinSCP.SessionOptions -Property @{
    Protocol = [WinSCP.Protocol]::Ftp
    HostName = "192.168.56.101"
    UserName = "sammy"
    Password = "1111"
}

# Configure proxy
$sessionOptions.AddRawSettings("ProxyMethod", "1")
$sessionOptions.AddRawSettings("ProxyHost", "proxy.abc.dfg.bg")

$session = New-Object WinSCP.Session

try
{
    # Connect
    $session.Open($sessionOptions)

    # Upload file
    $LocalFile = "C:\fff\medias\test2.txt"
    $RemoteFile = "/home/sammy/ftp/files/test2.txt"
    $session.PutFiles($LocalFile, $RemoteFile).Check()
}
finally
{
    $session.Dispose()
}

在这之后我得到这个错误：

Exception calling "Open" with "1" argument(s): "Connection failed.
Can't connect to proxy server
No connection could be made because the target machine actively refused it.
Connection failed."
At D:\Users\h.yordanov\Desktop\PowerShellFtp-master\script.ps1:21 char:5
+     $session.Open($sessionOptions)
+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : SessionRemoteException

编辑 3：

通过 filezilla 连接的日志。（我换了ip）

2017-06-23 14:50:14 6364 1 Status: Connecting to 192.168.81.3:21...
2017-06-23 14:50:14 6364 1 Status: Connection established, waiting for welcome message...
2017-06-23 14:50:14 6364 1 Response: 220 (vsFTPd 3.0.3)
2017-06-23 14:50:14 6364 1 Command: AUTH TLS
2017-06-23 14:50:14 6364 1 Response: 530 Please login with USER and PASS.
2017-06-23 14:50:14 6364 1 Command: AUTH SSL
2017-06-23 14:50:14 6364 1 Response: 530 Please login with USER and PASS.
2017-06-23 14:50:14 6364 1 Status: Insecure server, it does not support FTP over TLS.
2017-06-23 14:50:14 6364 1 Command: USER sammy
2017-06-23 14:50:14 6364 1 Response: 331 Please specify the password.
2017-06-23 14:50:14 6364 1 Command: PASS ****
2017-06-23 14:50:14 6364 1 Response: 230 Login successful.
2017-06-23 14:50:14 6364 1 Command: SYST
2017-06-23 14:50:14 6364 1 Response: 215 UNIX Type: L8
2017-06-23 14:50:14 6364 1 Command: FEAT
2017-06-23 14:50:14 6364 1 Response: 211-Features:
2017-06-23 14:50:14 6364 1 Response:  EPRT
2017-06-23 14:50:14 6364 1 Response:  EPSV
2017-06-23 14:50:14 6364 1 Response:  MDTM
2017-06-23 14:50:14 6364 1 Response:  PASV
2017-06-23 14:50:14 6364 1 Response:  REST STREAM
2017-06-23 14:50:14 6364 1 Response:  SIZE
2017-06-23 14:50:14 6364 1 Response:  TVFS
2017-06-23 14:50:14 6364 1 Response: 211 End
2017-06-23 14:50:14 6364 1 Status: Server does not support non-ASCII characters.
2017-06-23 14:50:14 6364 1 Status: Logged in
2017-06-23 14:50:14 6364 1 Status: Retrieving directory listing...
2017-06-23 14:50:14 6364 1 Command: PWD
2017-06-23 14:50:14 6364 1 Response: 257 "/" is the current directory
2017-06-23 14:50:14 6364 1 Command: TYPE I
2017-06-23 14:50:14 6364 1 Response: 200 Switching to Binary mode.
2017-06-23 14:50:14 6364 1 Command: PASV
2017-06-23 14:50:14 6364 1 Response: 227 Entering Passive Mode (192,168,81,3,192,147).
2017-06-23 14:50:14 6364 1 Command: LIST
2017-06-23 14:50:14 6364 1 Response: 150 Here comes the directory listing.
2017-06-23 14:50:14 6364 1 Response: 226 Directory send OK.
2017-06-23 14:50:14 6364 1 Status: Directory listing of "/" successful
2017-06-23 14:50:16 6364 1 Status: Retrieving directory listing of "/files"...
2017-06-23 14:50:16 6364 1 Command: CWD files
2017-06-23 14:50:16 6364 1 Response: 250 Directory successfully changed.
2017-06-23 14:50:16 6364 1 Command: PWD
2017-06-23 14:50:16 6364 1 Response: 257 "/files" is the current directory
2017-06-23 14:50:16 6364 1 Command: PASV
2017-06-23 14:50:16 6364 1 Response: 227 Entering Passive Mode (192,168,81,3,193,132).
2017-06-23 14:50:16 6364 1 Command: LIST
2017-06-23 14:50:16 6364 1 Response: 150 Here comes the directory listing.
2017-06-23 14:50:16 6364 1 Response: 226 Directory send OK.
2017-06-23 14:50:16 6364 1 Status: Calculating timezone offset of server...
2017-06-23 14:50:16 6364 1 Command: MDTM test.txt
2017-06-23 14:50:16 6364 1 Response: 213 20170622155419
2017-06-23 14:50:16 6364 1 Status: Timezone offset of server is 0 seconds.
2017-06-23 14:50:16 6364 1 Status: Directory listing of "/files" successful
2017-06-23 14:50:18 6364 1 Status: Retrieving directory listing of "/test"...
2017-06-23 14:50:18 6364 1 Command: CWD /test
2017-06-23 14:50:18 6364 1 Response: 250 Directory successfully changed.
2017-06-23 14:50:18 6364 1 Command: PWD
2017-06-23 14:50:18 6364 1 Response: 257 "/test" is the current directory
2017-06-23 14:50:18 6364 1 Command: PASV
2017-06-23 14:50:18 6364 1 Response: 227 Entering Passive Mode (192,168,81,3,162,156).
2017-06-23 14:50:18 6364 1 Command: LIST
2017-06-23 14:50:18 6364 1 Response: 150 Here comes the directory listing.
2017-06-23 14:50:18 6364 1 Response: 226 Directory send OK.
2017-06-23 14:50:18 6364 1 Status: Directory listing of "/test" successful
2017-06-23 14:50:22 6364 3 Status: Connecting to 192.168.81.3:21...
2017-06-23 14:50:22 6364 3 Status: Connection established, waiting for welcome message...
2017-06-23 14:50:22 6364 3 Response: 220 (vsFTPd 3.0.3)
2017-06-23 14:50:22 6364 3 Command: AUTH TLS
2017-06-23 14:50:22 6364 3 Response: 530 Please login with USER and PASS.
2017-06-23 14:50:22 6364 3 Command: AUTH SSL
2017-06-23 14:50:22 6364 3 Response: 530 Please login with USER and PASS.
2017-06-23 14:50:22 6364 3 Status: Insecure server, it does not support FTP over TLS.
2017-06-23 14:50:22 6364 3 Command: USER sammy
2017-06-23 14:50:22 6364 3 Response: 331 Please specify the password.
2017-06-23 14:50:22 6364 3 Command: PASS ****
2017-06-23 14:50:22 6364 3 Response: 230 Login successful.
2017-06-23 14:50:22 6364 3 Status: Server does not support non-ASCII characters.
2017-06-23 14:50:22 6364 3 Status: Logged in
2017-06-23 14:50:22 6364 3 Status: Starting download of /files/test.txt
2017-06-23 14:50:22 6364 3 Command: CWD /files
2017-06-23 14:50:22 6364 3 Response: 250 Directory successfully changed.
2017-06-23 14:50:22 6364 3 Command: PWD
2017-06-23 14:50:22 6364 3 Response: 257 "/files" is the current directory
2017-06-23 14:50:23 6364 3 Command: TYPE A
2017-06-23 14:50:23 6364 3 Response: 200 Switching to ASCII mode.
2017-06-23 14:50:23 6364 3 Command: PASV
2017-06-23 14:50:23 6364 3 Response: 227 Entering Passive Mode (192,168,81,3,162,251).
2017-06-23 14:50:23 6364 3 Command: RETR test.txt
2017-06-23 14:50:23 6364 3 Response: 150 Opening BINARY mode data connection for test.txt (17 bytes).
2017-06-23 14:50:23 6364 3 Response: 226 Transfer complete.
2017-06-23 14:50:23 6364 3 Status: File transfer successful, transferred 17 bytes in 1 second

我在这里没有看到任何代理连接。

【问题讨论】：

向我们展示一些 FTP 客户端（例如 WinSCP）上的日志文件，证明您确实可以下载该文件。
我用 filezilla 测试它。没问题
WinSCP 的广告代理问题：同样，向我们展示一个 FTP 客户端的日志文件，证明您可以通过该代理服务器进行连接。
我编辑了我的答案
我在 FileZilla 日志中没有看到任何提及代理 - 您是否在 FileZilla 中配置了代理？

标签： powershell ftp

【解决方案1】：

FtpWebRequest 不支持某些操作的 HTTP 代理，包括文件上传。明明是documented on MSDN：

如果指定的代理是 HTTP 代理，则仅支持 DownloadFile、ListDirectory 和 ListDirectoryDetails 命令。

无法使用 PowerShell 和标准 .NET 框架库通过 HTTP 代理将文件上传到 FTP。

您必须使用第 3 方 FTP 库或 PowerShell 模块。

例如WinSCP .NET assembly，你可以使用：

# Load WinSCP .NET assembly
Add-Type -Path "WinSCPnet.dll"

# Set up session options
$sessionOptions = New-Object WinSCP.SessionOptions -Property @{
    Protocol = [WinSCP.Protocol]::Ftp
    HostName = "ftp.example.com"
    UserName = "user"
    Password = "mypassword"
}

# Configure proxy
$sessionOptions.AddRawSettings("ProxyMethod", "3")
$sessionOptions.AddRawSettings("ProxyHost", "proxy")

$session = New-Object WinSCP.Session

try
{
    # Connect
    $session.Open($sessionOptions)

    # Upload file
    $LocalFile = "C:\fff\medias\1618716-maybach-exelero.jpg"
    $RemoteFile = "/files/1618716-maybach-exelero.jpg"
    $session.PutFiles($LocalFile, $RemoteFile).Check()
}
finally
{
    $session.Dispose()
}

有关SessionOptions.AddRawSettings 的选项，请参阅raw settings。

您可以拥有WinSCP GUI generate a PowerShell FTP upload code template，就像上面一样，为您服务。

（我是 WinSCP 的作者）

虽然您的实际问题是您在计算机上的 Internet 连接选项中配置了代理，但您实际上并不想使用它们。

正确的解决方案是修复选项。
转到控制面板 > 网络和 Internet > Internet 选项 > 连接 > LAN 设置。

或者作为解决方法，在您的 PowerShell 代码中禁用特定连接的代理：

$FTPRequest.Proxy = [System.Net.GlobalProxySelection]::GetEmptyWebProxy()

见powershell http get not use proxy。

【讨论】：

好的，谢谢。运行您的代码后出现错误：您不能在空值表达式上调用方法。在 D:\Users\h.yordanov\Desktop\PowerShellFtp-master\script.ps1:34 char:5 + $session.Dispose() + ~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidOperation: (:) [], RuntimeException + FullyQualifiedErrorId : InvokeMethodOnNull
我正在尝试下载和上传。很抱歉造成误解。