"Invalid array passed" when parsing JSON
json, powershell, powershell-3.0
Solution
Try to pipe to `Out-String` before piping to `ConvertFrom-Json`:
Get-Content $file | Select -Skip 1 | Out-String | ConvertFrom-Json
In your working example the JSON code is a string while the non-working example returns a collection of lines. Piping to `Out-String` converts the collection to a single string, which is what the InputObject parameter accept.
Problem
I have this file which I want to read with PowerShell: ``` var myMap = [ { "name": "JSON Example", "attr": "Another attribute" } ] ``` My PowerShell v3 Code: ``` $str = Get-Content $file | Select -Skip 1; $str | ConvertFrom-Json; ``` But I'm always getting this error: ``` ConvertFrom-Json : Invalid array passed in, ']' expected. (1): [ At S:\ome\Path\script.ps1:60 char:8 + $str | ConvertFrom-Json; + ~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (:) [ConvertFrom-Json], ArgumentException + FullyQualifiedErrorId : System.ArgumentException,Microsoft.PowerShell.Commands.ConvertFromJsonCommand ``` If I copy and paste the JSON code manually into the code, everything is working fine: ``` '[ { "name": "JSON Example", "attr": "Another attribute" } ]' | ConvertFrom-Json; ```