使用 powershell 刪除 JSON 數組中的空 Object

Question

我有這個 JSON，我想使用 powershell 刪除值數組中的空 object。有人可以幫忙嗎？

{ "value" : [{},{},{"name": "a"}] }

Answer 1

# Parse the JSON into an object graph.
$obj = '{ "value" : [{},{},{"name": "a"}] }' | ConvertFrom-Json

# Filter out the empty objects, by counting the number of properties
# via the .psobject.Properties collection, available on any object in PowerShell.
# Note the need for @(...) to ensure that the result of the filtering remains
# an array.
$obj.Value = @($obj.Value | Where-Object { $_.psobject.Properties.Count -gt 0 })

# Reconvert to JSON.
$obj | ConvertTo-Json -Compress

以上產量：

{"value":[{"name":"a"}]}

也可以看看：

• ConvertFrom-Json
• ConvertTo-Json
• Where-Object