Question

我正在使用一个Function调用另一个函数并返回一个PSObject数组或多个数组（我认为）。每个循环对象后面的返回值是一组值。函数测试2中的$ a中的数据如下，但它的计数为3，表示三个对象或数组，每个文件夹一个。这似乎很正常，如果我把它写成CSV报告，我会没事的，但我希望操纵每个数组中的数据。当我尝试操纵数据时，它试图操纵数组，我无法搜索或使用每一行中的项目。我也不知道我有多少个文件夹，因此解决方案需要具有通用性和可扩展性。我不知道如何轻松访问所有阵列中的每一行。

Function Test1 {
 [cmdletbinding()]
param(
    [Parameter(Position = 0, Mandatory = $true)]
    [string]$Folder
)

$array1 = @("Folder1_Test1","Folder1_Test2","Folder1_Test3","Folder1_Test4","Folder1_Test5    ","Folder2_Test6","Folder2_Test7","Folder2_Test8","Folder2_Test9","Folder3_Test1    0")
$array2 = @("Folder1_Test1","Folder1_Test4","Folder1_Test5","Folder2_Test9")


$data = @()
Foreach ($item in $array1) {
    If ($item -match $Folder -and $array2 -notcontains $item) {
        $Obj = New-Object PSObject -Property @{
            Folder = $Folder;
            SubFolder = $item;
            Message = "$item not found.";
        }
        $data += $Obj
}
}
Return ,$data
}

Function Test2 {
$Folders = @("Folder1", "Folder2", "Folder3")
$a = $Folders | ForEach-Object {Test1 $_}
$a.Count

foreach ($item in $a)
        { 
          $item.Folder
          $item.SubFolder
          $item.Message
        }
}

$ a的输出是计数为3。

SubFolder      Message                   Folder 
---------      -------                   ------ 
Folder1_Test2  Folder1_Test2 not found.  Folder1
Folder1_Test3  Folder1_Test3 not found.  Folder1
Folder2_Test6  Folder2_Test6 not found.  Folder2
Folder2_Test7  Folder2_Test7 not found.  Folder2
Folder2_Test8  Folder2_Test8 not found.  Folder2
Folder3_Test10 Folder3_Test10 not found. Folder3

如何访问每个对象内的每一行？我希望能够搜索子文件夹，然后识别它所在的文件夹并编写消息，如下所示：

$a | ForEach-Object | Write-Host {"Subfolder $($_.Subfolder) is in $($_.Folder) and error message is $($_.Message)"}

提前致谢。

Answer 1

您正在创建的是一个包含三个元素的数组。数组中的每个元素都显示信息。当你把它写到圆锥体上时，你会看到所有元素挤在一起：

feeds.item.questionList.question[1]

如果你看$ a [0]，你会看到：

SubFolder          Message                       Folder 
---------          -------                       ------ 
Folder1_Test2      Folder1_Test2 not found.      Folder1
Folder1_Test3      Folder1_Test3 not found.      Folder1
Folder1_Test5      Folder1_Test5     not found.  Folder1
Folder2_Test6      Folder2_Test6 not found.      Folder2
Folder2_Test7      Folder2_Test7 not found.      Folder2
Folder2_Test8      Folder2_Test8 not found.      Folder2
Folder3_Test1    0 Folder3_Test1    0 not found. Folder3

这就是计数返回3的原因。如果你使用PS C:\WINDOWS\system32> $a[0] SubFolder Message Folder --------- ------- ------ Folder1_Test2 Folder1_Test2 not found. Folder1 Folder1_Test3 Folder1_Test3 not found. Folder1 Folder1_Test5 Folder1_Test5 not found. Folder1，你会看到一行，因为它访问$ a的第一个元素，这是一个数组，然后访问该数组的第一个元素。您必须使用嵌套循环来访问嵌套数组中的每个元素。

Answer 2

感谢杰森，我能够让代码工作。我在Test2的底部添加了这个，输出在下面，逐行。

Foreach ($Element in $a) {
   ForEach ($item in $Element) {
       Write-Host "Subfolder $($item.Subfolder) is in $($item.Folder) and 
error message is $($item.FolderMessage)"
   }


Subfolder Folder1_Test2 is in Folder1 and error message is Folder1_Test2 not found.
Subfolder Folder1_Test3 is in Folder1 and error message is Folder1_Test3 not found.
Subfolder Folder2_Test6 is in Folder2 and error message is Folder2_Test6 not found.
Subfolder Folder2_Test7 is in Folder2 and error message is Folder2_Test7 not found.
Subfolder Folder2_Test8 is in Folder2 and error message is Folder2_Test8 not found.
Subfolder Folder3_Test10 is in Folder3 and error message is Folder3_Test10 not found.

PSObject阵列数组返回Powershell读取单个项目/行

2 个答案: