user52028778 user52028778 - 5 months ago 88
JSON Question

How to parse JSON from the Invoke-WebRequest in PowerShell?

When sending the GET request to the server, which uses self-signed certificate:

add-type @"
using System.Net;
using System.Security.Cryptography.X509Certificates;
public class TrustAllCertsPolicy : ICertificatePolicy {
public bool CheckValidationResult(
ServicePoint srvPoint, X509Certificate certificate,
WebRequest request, int certificateProblem) {
return true;
}
}
"@
[System.Net.ServicePointManager]::CertificatePolicy = New-Object TrustAllCertsPolicy
$RESPONSE=Invoke-WebRequest -Uri https://yadayada:8080/bla -Method GET
echo $RESPONSE


I'm getting following Response:

StatusCode : 200
StatusDescription : OK
Content : {123, 10, 108, 111...}
RawContent : HTTP/1.1 200 OK
Content-Length: 21
Date: Sat, 11 Jun 2016 10:11:03 GMT

{
flag:false
}
Headers : {[Content-Length, 21], [Date, Sat, 11 Jun 2016 10:11:03 GMT]}
RawContentLength : 21


Content contains some wired numbers, so I went after RawContent, how would I parse the JSON inside, ignoring headers? or is there a clean way to get Content from those numbers?

Answer

You could replace Invoke-WebRequest with Invoke-RestMethod which auto-converts json response to a psobject so you can use:

$response = Invoke-RestMethod -Uri "https://yadayada:8080/bla"
$response.flag