PowerShell中的导入模块和添加PSSnapin

Question

如何编写代码来检查Add-PSSnapin，如果它不存在，则检查Import-Module，如果它也不存在，则退出脚本。我已经写了下面的代码，但我在使用它时遇到了内存溢出问题。

cls
Function GetModule {

$ErrorActionPreference = 'Stop'

if(-not(Get-Module -Name VMware.VimAutomation.Core))
{
 Import-Module VMware.VimAutomation.Core
}

Elseif (-not(Get-PSSnapin -Name VMware.VimAutomation.Core))
{
   Add-PSSnapin VMware.VimAutomation.Core
}

Else {

Write-Host "VMware PowerCLI Modules are NOT INSTALLED on this machine !"
Exit
}   

}

GetModule

Answer 1

您可以使用多个try/catch以及-ErrorAction Stop参数

Function GetModule {

Try {
Import-Module -Name VMware.VimAutomation.Core -ErrorAction Stop
}

catch {

    Write-Host "Unable to load VMware PowerCLI Module, trying the PSSnapin..."

    try {
    Add-PSSnapin VMware.VimAutomation.Core -ErrorAction Stop
    }

        catch {
        Write-Host "VMware PowerCLI Modules are NOT INSTALLED on this machine !"
        return
        }
    }

}