rest - Powershell v3 Invoke-RestMethod header

Question

我正在尝试对服务进行 RestAPI 调用，该服务在其文档中指定以下内容:

An Integration Server can respond in XML and JSON formats. Use one of the following accept headers in your requests:

1. accept: application/json, /.
2. accept: application/xml, /

If the accept header does not include application/xml, application/json or /, the integration server will respond with a "406 method not acceptable" status code.

我的 powershell 代码如下所示 Invoke-RestMethod -URI https://URL/ticket -Credential $cred -Method Get -Headers @{"Accept"="application/xml"}
但是我收到与标题相关的以下错误: Invoke-RestMethod : This header must be modified using the appropriate property or method.
Parameter name: name
有人可以帮助我理解为什么 powershell 不允许我指定 Accept header 吗？还是我在这里缺少另一种方法？

谢谢

Answer 1

自 Accept header could not be specified两者都不是 Invoke-RestMethod也不是 Invoke-WebRequest在PowerShell V3中，你可以考虑下面的函数，在一定程度上模拟Invoke-RestMethod :

Function Execute-Request()
{
Param(
  [Parameter(Mandatory=$True)]
  [string]$Url,
  [Parameter(Mandatory=$False)]
  [System.Net.ICredentials]$Credentials,
  [Parameter(Mandatory=$False)]
  [bool]$UseDefaultCredentials = $True,
  [Parameter(Mandatory=$False)]
  [Microsoft.PowerShell.Commands.WebRequestMethod]$Method = [Microsoft.PowerShell.Commands.WebRequestMethod]::Get,
  [Parameter(Mandatory=$False)]
  [Hashtable]$Header,  
  [Parameter(Mandatory=$False)]
  [string]$ContentType  
)

   $client = New-Object System.Net.WebClient
   if($Credentials) {
     $client.Credentials = $Credentials
   }
   elseif($UseDefaultCredentials){
     $client.Credentials = [System.Net.CredentialCache]::DefaultCredentials 
   }
   if($ContentType) {
      $client.Headers.Add("Content-Type", $ContentType)
   }
   if($Header) {
       $Header.Keys | % { $client.Headers.Add($_, $Header.Item($_)) }  
   }     
   $data = $client.DownloadString($Url)
   $client.Dispose()
   return $data 
}

例子:

Execute-Request -Url "https://URL/ticket" -UseDefaultCredentials $true

Execute-Request -Url "https://URL/ticket" -Credentials $credentials -Header @{"Accept" = "application/json"} -ContentType "application/json"