CODEWITHSUNDEEP
jsonpowershellresponse
Giorgi Gviani
Giorgi Gviani

Reputation: 28434

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?

Upvotes: 63

Views: 129856

Answers (3)

Frode F.
Frode F.

Reputation: 54941

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

Upvotes: 126

jiboj
jiboj

Reputation: 91

This way:

$response = Invoke-WebRequest -Uri <your_uri>
if ($response.statuscode -eq '200') {
    $keyValue= ConvertFrom-Json $response.Content | Select-Object -expand "<your_key_name>"
}

Upvotes: 9

FictitiousWizard
FictitiousWizard

Reputation: 683

If you have a need to use Invoke-WebRequest over Invoke-RestMethod you can convert it to an object by turning it into a string first

$response = Invoke-WebRequest -Uri "https://yadayada:8080/bla"
$jsonObj = ConvertFrom-Json $([String]::new($response.Content))

Upvotes: 29

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