Powershell控制台

时间:2015-05-12 18:55:36

标签: debugging powershell console winscp winscp-net

我有一个讨厌的问题我想消除我在Powershell控制台和ISE中没有要求调试信息的位置。它妨碍了我想要的调试信息。

我不清楚这是特定于我正在编写脚本的工具(WinSCP),还是更通用的PowerShell行为。

简而言之,WinSCP.Session.Open事件不会写出任何内容(好!),但Close()Dispose()方法非常繁琐,下面的内容出现在每次调用我的控制台。

起初我认为这可能是将语句包含在finally块中的结果,但将它们移动到try块会产生相同的滋扰行为。

基于类似但不完全相同的问题,我检查了"偏好变量"。我的股票价值列在最后,唯一一个我试图改变无效的是"警告偏好"到"默默无效",没有效果

运行示例:

PS F:\> getFirewallContents "AAA" 255.255.227.254
Attempting Session.Open  AAA  |  255.255.227.254
Completed  Session.Open  AAA  |  255.255.227.254
/var/db/commits exists, last write: 5/8/2015 11:33:22 AM
Closing Session  AAA

... two stanzas that follow are the undesired output ......    

MemberType          : Method
OverloadDefinitions : {System.Void Close()}
TypeNameOfValue     : System.Management.Automation.PSMethod
Value               : System.Void Close()
Name                : Close
IsInstance          : True

MemberType          : Method
OverloadDefinitions : {System.Void Dispose()}
TypeNameOfValue     : System.Management.Automation.PSMethod
Value               : System.Void Dispose()
Name                : Dispose
IsInstance          : True

Closed  Session  AAA
function getFirewallContents ([string] $fw_name, [string] $fw_ip) {
    $session = New-Object WinSCP.Session
    $sessionOptions = New-Object WinSCP.SessionOptions
    $xferOptions = New-Object WinSCP.TransferOptions

    $sessionOptions.HostName = $fw_ip
    $sessionOptions.UserName = "NOPE"
    $sessionOptions.Password = "NOT TELLING"
    $sessionOptions.Protocol = [WinSCP.Protocol]::Sftp
    $sessionOptions.GiveUpSecurityAndAcceptAnySshHostKey = $TRUE

    $remotefile = "/var/db/commits"

    Try {
        Write-Host  "Attempting Session.Open " $fw_name " | " $sessionOptions.HostName 

        $session.Open($sessionOptions)

        Write-Host  "Completed  Session.Open " $fw_name " | " $sessionOptions.HostName      

        if ($session.FileExists($remotefile)) {
            Write-Host "$remotefile exists, last write:" $session.GetFileInfo($remotefile).LastWriteTime
        } else {
            Write-Host "$remotefile NOT FOUND"
        }
    } Catch {
        Write-Host "Something bad happened"
    } Finally {
        Write-Host "Closing Session  $fw_name "
        $session.Close
        $session.Dispose
        Write-Host "Closed  Session  $fw_name "
    }
}
Name                           Value
----                           -----
ConfirmPreference              High
DebugPreference                SilentlyContinue
ErrorActionPreference          Continue
ProgressPreference             Continue
VerbosePreference              SilentlyContinue
WarningPreference              Continue     (Tried Silently Continue, no effect)
WhatIfPreference               False

1 个答案:

答案 0 :(得分:2)

您在调用.Close.Dispose时缺少括号。所以你实际上根本没有调用方法,而是采用方法的地址而不是使用它。 PowerShell打印"表达式"作为最后的手段在控制台上的结果。

正确的语法是:

$session.Close()
$session.Dispose()