Iterating through a JSON file PowerShell

Question

I am trying to loop through the below JSON file in PowerShell.

Without specifically naming the top tags (e.g. 17443 and 17444), as I do not know them in advance I ca

Answer 1

This question comes up a lot. In this case we have to loop over properties twice. This is my current answer. Make the object a little easier to work with. Both the top level and the data properties become arrays of "name" and "value". You could use select-object calculated properties to present it any way you want. It seems like in json you more often get random properties, rather then an array of the same properties.

$a = cat file.json | convertfrom-json

$a = $a.psobject.properties | select name,value 
$a | foreach { $_.value.data = 
  $_.value.data.psobject.properties | select name,value }

$a.value.data.value

value
-----
{Mr}
{Jack}
{Cawles}
{Miss}
{Charlotte}
{Tann}
{Mr}
{John}
{Brokland}

Trying something similar with jq:

'{"prop1":1, "prop2":2, "prop3":3}' | jq to_entries | convertfrom-json

key   value
---   -----
prop1     1
prop2     2
prop3     3

Also convertFrom-Json in Powershell 7 has an -AsHashTable parameter, that gives you keys and values properties.

$a = '{"name":"joe","address":"here"}' | ConvertFrom-Json -AsHashtable
$a

Name                           Value
----                           -----
name                           joe
address                        here

$a.keys
name
address

$a.values
joe
here