数组和分组对象的 PowerShell 问题

编程问答 2022-05-30

问题描述

我在按环境对一组对象进行分组时遇到问题。以下脚本显示了三个环境，每个环境中都有服务器。现在，我试图按组循环这些对象，但遇到环境名称错误。以下是我的示例逻辑：

$array = @(("DEVELOPMENT",("SRV1")),("QA",("SRV2","SRV3")),("PRODUCTION",("SRV4","SRV5")))

ForEach ($system in $array) {
    $envName = $array[0]
    ForEach ($hostname in $system[1]) {
        Write-Host ("Result for " + $hostname + " in " + $envName)
    }
}

变量名 $envName 总是返回相同的错误结果。

[0]:"DEVELOPMENT"
[1]:"SRV1"

如何按以下方式对 $array[0] 和 $system[1] 进行分组和循环？

DEVELOPMENT = SRV1
QA          = SRV2,SRV3
PRODUCTION = SRV4,SRV5

解决方法

另一种选择是创建一个对象数组而不是嵌入的字符串数组。

class Server
{
    [string]$Environment
    [string]$ServerName
}


$Development = @("SRV1")
$Qa = @("SRV2","SRV3")
$Production = @("SRV4","SRV5")

$Array = @()

foreach ($System in $Development)
{
    $Server = [Server]::new()
    $Server.ServerName = $System
    $Server.Environment = "Development"
    $Array += $Server
}

foreach ($System in $Qa)
{
    $Server = [Server]::new()
    $Server.ServerName = $System
    $Server.Environment = "QA"
    $Array += $Server
}

foreach ($System in $Production)
{
    $Server = [Server]::new()
    $Server.ServerName = $System
    $Server.Environment = "Production"
    $Array += $Server
}

foreach ($System in $Array)
{
    Write-Host "Result for $($System.ServerName) in $($System.Environment)"
}
,

评论中的解决方案

"Instead of $envName = $array[0] you should write $envName = $system[0]"
arraysarraysforeachloopspowershellserver