PowerShell如何添加到JSON数组

Question

如何在PowerShell中添加JSON数组？我正在尝试使用以下代码，但它抱怨“集合是固定大小的”例外：

$json = @"
[
  {
    "name": "First"
  },
  {
    "name": "Second"
  }
]
"@

$toAdd =@"
{
  "name": "Third"
}
"@

$jobj = ConvertFrom-Json -InputObject $json    
$jobj.Add((ConvertFrom-Json -InputObject $toAdd))

Answer 1

只需使用+=代替Add()：

$jobj += (ConvertFrom-Json -InputObject $toAdd)

Answer 2

这有效。

$js = @"
[
  {
    "name":"First"
  },
  {
    "name":"Second"
  }
]
"@

$toAdd = @"
[
  {
    "name":"Third"
  }
]
"@

$jobj = ConvertFrom-Json -InputObject $js
$jsrc = ConvertFrom-Json -InputObject $toAdd

$jobj = $jobj + $jsrc