使用Powershell将数组添加到JSON

Question

I'm trying to set a JSON file using powershell, but the vm's keep appearing in seperate lines.

This is the code I use:

$arrayRg = "VmResGrp"
$vms = vmname
$arrayvms = @(Get-AzureRmVM -ResourceGroupName $arrayRg  | ? {$_.Name -like "*$vms*"}) | select Name 

$data = Get-Content -Path "$updatepath\$encryptParam" -raw | ConvertFrom-Json
$data.parameters.recoveryServicesVaultName.value = "rsvname01"
$data.parameters.recoveryServicesVaultBackupPolicyName.value ="defaultPolicy"
$data.parameters.recoveryServicesVaultResourceGroup.value = "rg-rsvgrp"
$data.parameters.VMNames.value = [array]$arrayvms

$data | ConvertTo-Json -Depth 9 | % { [System.Text.RegularExpressions.Regex]::Unescape($_) } |set-content -Path  "$updatedpath\$encryptParam"

The output I get is:

"VMNames":  {
     "value":  [
       {
        "Name":  "vmr1ssr1"
       },
       {
           "Name":  "vmr1ssr2"
       },
       {
           "Name":  "vmr1ssr3"
       }
    ]
 }

What I'm trying to get is:

"VMNames":  {
     "value":  [
       {
         "vmr1ssr1"
         "vmr1ssr2"
         "vmr1ssr3"
       }
    ]
 }

I've tried using -expandProperty on line 3 after select Name but this gives me no output on the values at all.

Can anyone see where I'm going wrong?

Thanks in advance :)

Answer 1

I'm pretty sure that what you intend your output to be is actually this:

{
    "VMNames":  {
                    "value":  [
                                  "vmr1ssr1",
                                  "vmr1ssr2",
                                  "vmr1ssr3"
                              ]
                }
}

The difference being the comma after the name for each VM. The only change you have to make to your code is to expand the Name property, rather than just select it. As it stands you have the line:

$arrayvms = @(Get-AzureRmVM -ResourceGroupName $arrayRg  | ? {$_.Name -like "*$vms*"}) | select Name 

This leaves you with 3 objects that have 1 property, Name . The value of that property is the relevant content here, so rather than just Select Name you want to use the -ExpandProperty parameter, changing that line to this:

$arrayvms = @(Get-AzureRmVM -ResourceGroupName $arrayRg  | ? {$_.Name -like "*$vms*"}) | select -expand Name 

Now your JSON will look like what I have above.

Edit: If -ExpandProperty does not work you can have PowerShell loop through each object and output the property value with a ForEach-Object loop. I use the shorter alias of % here:

$arrayvms = @(Get-AzureRmVM -ResourceGroupName $arrayRg  | ? {$_.Name -like "*$vms*"}) | % Name