Question

我尝试将成员“ canonicalName”添加到对象。当我使用声明时：

$obj | Add-Member NoteProperty "CanonicalName" 
-value (Get-ADComputer $row.ServerName -Properties CanonicalName).CanonicalName

“ canonicalName”列根本没有出现。将语句与变量一起使用：

    $a = (Get-ADComputer $row.ServerName -Properties CanonicalName).CanonicalName 
$obj | Add-Member NoteProperty "CanonicalName" -value $a 

works perfectly.

提示：我正在遍历的某些ServerName在域中不再存在。代码：

$data = $dataSet.Tables[0] 
$ErrorActionPreference = "silentlycontinue"
$info = @()
foreach($row in $data)
{ 
    $obj = New-Object psobject
    $obj | Add-Member NoteProperty "ServerName" -Value $row.ServerName
    #$a = (Get-ADComputer $row.ServerName -Properties CanonicalName).CanonicalName 
    #$obj | Add-Member NoteProperty "CanonicalName" -value $a 
    $obj | Add-Member NoteProperty "CanonicalName" -value (Get-ADComputer $row.ServerName -Properties CanonicalName).CanonicalName


    $info += $obj    
}

$info | ft -AutoSize

我希望得到：

ServerName CanonicalName                                                             
---------- -------------                                                             
N3751022   xx.yy.de/Memberserver/SQL-Cluster/xx/n3887022                 
N3732022   xx.zz.de/Memberserver/yy/uu/zz/N3732022

在没有变量$ a的情况下，我得到的全部是（没有列canonicalName）：

ServerName
----------
N3751022  
N3732022

我已经在不同的域中测试了代码（数据集中的所有服务器都在域中！），即使没有canonicalName的值，我也会得到正确的结果（两列serverName和canonicalName）。给定的serverName。

Answer 1

使用try / catch可能是您的解决方法...

但是请注意，此示例中使用的catch块很不精确。运行Get-ADComputer的任何异常都将被视为相同，我们只是假设Get-ADComputer没有输出表示该计算机不是域的成员。

$data = $dataSet.Tables[0] 
$ErrorActionPreference = "silentlycontinue"
$info = @()
foreach($row in $data)
{ 
    $obj = New-Object psobject
    $obj | Add-Member NoteProperty "ServerName" -Value $row.ServerName
    try {
            $obj | Add-Member NoteProperty "CanonicalName" -Value (Get-ADComputer $row.ServerName -Properties CanonicalName).CanonicalName
    } catch {
            $obj | Add-Member NoteProperty "CanonicalName" -Value $null
    }

    $info += $obj    
}

$info | ft -AutoSize

Answer 2

这就是我要做的。如果没有匹配的记录而不是错误，那么在Get-ADComputer上使用过滤器将使其返回null：

$data = $dataSet.Tables[0] 
$ErrorActionPreference = "silentlycontinue"
$info = @()

foreach ($Row in $Data) {
    $ServerName =  $Row.ServerName
    $obj = New-Object psobject
    $obj | Add-Member NoteProperty "ServerName" -Value $ServerName
    $CanonicalName = (Get-ADComputer -Filter {Name -like $ServerName} -Properties CanonicalName).CanonicalName
    if ($CanonicalName) {
        $obj | Add-Member NoteProperty "CanonicalName" -value $CanonicalName
    }
    else {
        $obj | Add-Member NoteProperty "CanonicalName" -value $null
    }
    $info += $obj 
}

$info | ft -AutoSize

将成员添加到对象的异常行为

2 个答案: