Powershell中的Microsoft Azure配置JSON模板输出

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我在Microsoft Azure资源调配方面遇到问题，我正在尝试访问物联网中心或事件中心等资源的SharedAccessPolicyKey。我正在尝试使用listKeys函数，并在模板JSON文件中输出：

    "outputs": {
"hubKeys": {
  "value": "[listKeys(resourceId('Microsoft.Devices/IotHubs', parameters('hubName')), '2016-02-03')]",
  "type": "object"
}

}

当我在Windows Powershell中输出返回的对象时，它如下所示：

    Type                       : Array
    IsReadOnly                 : False
    HasValues                  : True
    First                      : {keyName, primaryKey, secondaryKey, rights}
    Last                       : {keyName, primaryKey, secondaryKey, rights}
    Count                      : 5
    Parent                     : {{
                                   "keyName": "iothubowner",
                                   "primaryKey": "dZVFGkIysIgVRKjxlZsCWdk6KGa4rpBFlY6BOLmaiD8=",
                                   "secondaryKey": "HtRYETAdgja/TBSS3sVTshKaGzZWMLbZC6GR60emSV4=",
                                   "rights": "RegistryWrite, ServiceConnect, DeviceConnect"
                                 } {
                                   "keyName": "service",
                                   "primaryKey": "DGOujP2tBTiTTdKxukTx7umeYFFlDEhoih7fb0tP3i8=",
                                   "secondaryKey": "B+6j1nfEc59GAeJQNakNKolTBoR9kc5W+TUNzRXmDpc=",
                                   "rights": "ServiceConnect"
                                 } {
                                   "keyName": "device",
                                   "primaryKey": "qxmRJVH0yVhSkLEz8JaHhtDJaDofpw4SEKkZNlBwp7c=",
                                   "secondaryKey": "RhUuME9EnnUsE2sixswaiTofKsVVfCQNIllwkHgY/8A=",
                                   "rights": "DeviceConnect"
                                 } {
                                   "keyName": "registryRead",
                                   "primaryKey": "pEpHrL4amd9+7pvl6uCiYHL3rZhxV76tZ1P9bERO6Xc=",
                                   "secondaryKey": "6h4UBKd4WPkdpUfl0Hi3G5YKgB3LmtDMbgXDYx3eKrk=",
                                   "rights": "RegistryRead"
                                 } {
                                   "keyName": "registryReadWrite",
                                   "primaryKey": "HpCxKVa1686A8vOfNVBUzYSe2YJmKIwwAzxUh5DokuY=",
                                   "secondaryKey": "PGeYYID9y6cClqGD1rl4koLNySc7kOGK6VuNlBiwqmo=",
                                   "rights": "RegistryWrite"
                                 }}
    Root                       : {value}
    Next                       : 
    Previous                   : 
    Path                       : value
    LineNumber                 : 0
    LinePosition               : 0
    AllowNew                   : True
    AllowEdit                  : True
    AllowRemove                : True
    SupportsChangeNotification : True
    SupportsSearching          : False
    SupportsSorting            : False
    IsSorted                   : False
    SortProperty               : 
    SortDirection              : Ascending
    IsFixedSize                : False
    SyncRoot                   : System.Object
    IsSynchronized             : False

我的问题：有人能告诉我如何在不同的“keyName”对象中访问“primaryKey”吗？我尤其需要“服务”的主密钥

我可以用打印机打印对象

    $Key = New-AzureRmResourceGroupDeployment (deleted parameters for this post)
    Write-Output $Key.Outputs.hubKeys

我已经尝试过像$Key.Outputs.hubKeys.value.Parents.values这样的东西。。。。还有无数其他方式。有人知道如何获得价值吗

谢谢， Arno

该示例说明了实现这一点的一种方法。ARM模板创建一个IoT中心和Azure流分析作业，该作业使用生成的键值连接到中心

这些片段总结了关键部分：

/* Create IoT Hub */
{
  "apiVersion": "2016-02-03",
  "type": "Microsoft.Devices/IotHubs",
  "name": "[variables('iotHubName')]",
  "location": "[resourceGroup().location]",
  "sku": "[parameters('iotHubSku')]"
},

/* Part of the ASA definition */
"datasource": {
  "type": "Microsoft.Devices/IotHubs",
  "properties": {
    "iotHubNamespace": "[variables('iotHubName')]",
    "sharedAccessPolicyName": "[variables('iotHubKeyName')]",
    "sharedAccessPolicyKey": "[listKeys(resourceId('Microsoft.Devices/IotHubs/Iothubkeys', variables('iotHubName'), variables('iotHubKeyName')), '2016-02-03').primaryKey]",
    "consumerGroupName": "[variables('archiveJobConsumerGroupName')]"
  }
}