如何从PowerShell中的Invoke-WebRequest解析JSON？

Question

将GET请求发送到使用自签名证书的服务器时:

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

我得到了以下回应:

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

内容包含一些有线数字,所以我去了RawContent,我如何解析里面的JSON,忽略标题？或者有一种干净的方式从这些数字中获取内容？

Answer 1

您可以将json响应自动转换为a 替换Invoke-WebRequest,以便您可以使用:Invoke-RestMethodpsobject

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

Answer 2

如果您需要使用Invoke-WebRequestoverInvoke-RestMethod您可以先将其转换为字符串来将其转换为对象

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

Answer 3

这边走：

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