json - Powershell ConvertTo-JSON缺少嵌套级别

Question

如果嵌套太深，看起来Powershell在导出为JSON时会切断数据。我的对象层次结构如下所示:

Main Object
    Metadata
    More Metadata
    Collection of Other object Sources
        Collection of data used by these sources

出于某种原因，当我转换为JSON时，powershell会将第三级(这些源使用的数据的集合)导出为空字符串，即使它是添加了各种NoteProperty的对象的数组。例如:

$test = New-Object -TypeName PSObject

$obj = New-Object -TypeName PSObject
$obj | Add-Member -MemberType NoteProperty -Name "Name" -Value "adsf"

$test2 = New-Object -TypeName PSObject
$test2 | Add-Member -MemberType NoteProperty -Name "ArrayTest" -Value @($obj, $obj)

$test3 = New-Object -TypeName PSObject
$test3 | Add-Member -MemberType NoteProperty -Name "ArrayTest" -Value @($obj, $obj, $obj)

$test | Add-Member -MemberType NoteProperty -Name "CollectionTest" -Value @($test2, $test3)

这将导致以下JSON字符串:

PS C:\Users\user\projects\Powershell> $test | ConvertTo-Json
{
    "CollectionTest":  [
                           {
                               "ArrayTest":  " "
                           },
                           {
                               "ArrayTest":  "  "
                           }
                       ]
}

转换为XML会导致类似情况:

<?xml version="1.0"?>
<Objects>
  <Object Type="System.Management.Automation.PSCustomObject">
    <Property Name="CollectionTest" Type="System.Object[]">
      <Property Type="System.Management.Automation.PSCustomObject">
        <Property Type="System.String">@{ArrayTest=System.Object[]}</Property>
        <Property Name="ArrayTest" Type="System.Management.Automation.PSNoteProperty">System.Object[]</Property>
      </Property>
      <Property Type="System.Management.Automation.PSCustomObject">
        <Property Type="System.String">@{ArrayTest=System.Object[]}</Property>
        <Property Name="ArrayTest" Type="System.Management.Automation.PSNoteProperty">System.Object[]</Property>
      </Property>
    </Property>
  </Object>
</Objects>

在Powershell中是否存在某种对象嵌套限制？

Answer 1

从Get-Help ConvertTo-JSON:

-Depth <Int32>
Specifies how many levels of contained objects are included in the JSON representation. The default value is 2.

设置-Depth参数可以保留数据的深度。