在powershell中访问blob json的键值对

问题描述

我有一个 JSON ，就像这样（只发布初始片段）：

[
  {
    "ICloudBlob":      {
      "StreamWriteSizeInBytes":  4194304,"ServiceClient":  {
        "AuthenticationScheme":  1,"BufferManager":  null,"Credentials":      {
          "SASToken":  null,"AccountName":
          "storageaccountappse9a4d","KeyName":  null,"IsAnonymous":  false,"IsSAS":  false,"IsSharedKey":  true,"IsToken":  false,"SASSignature":  null
        },"BaseUri":
        "https://storageaccountappse9a4d.blob.core.windows.net/","StorageUri":  {
          "PrimaryUri":
          "https://storageaccountappse9a4d.blob.core.windows.net/","SecondaryUri":  null
        },"DefaultRequestOptions":  {
          "RetryPolicy":  {

          },"EncryptionPolicy":  null,"RequireEncryption":  null,"CustomerProvidedKey":  null,"EncryptionScope":  null,"AbsorbConditionalErrorsOnRetry":  null,"LocationMode":  0,"ServerTimeout":  null,"MaximumExecutionTime":  null,"NetworkTimeout":  null,"ParallelOperationThreadCount":  1,"SingleBlobUploadThresholdInBytes":  134217728,"UseTransactionalMD5":  null,"StoreBlobContentMD5":  null,"disableContentMD5Validation":  null,"ChecksumOptions":  {
            "disableContentMD5Validation":  null,"StoreContentMD5":  null,"disableContentCRC64Validation":  null,"UseTransactionalCRC64":  null
          }

我想访问 ParallelOperationThreadCount 参数，为此我使用以下代码：

$JSON_obj=Get-AzStorageAccount | Get-AzStorageContainer | Get-AzStorageBlob | ConvertTo-JSON -Depth 
50
$ParallelOperationThreadCount=@()
foreach($i in $JSON_obj)
{
$ParallelOperationThreadCount+=$i.ICloudBlob.ServiceClient.DefaultRequestOptions.ParallelOperationThreadCount

 }
$ParallelOperationThreadCount

然而，在运行这个时，没有输出出来。它运行然后退出。有什么办法可以找出可行的方法吗？

解决方法

cmdlet ConvertTo-JSON 会将您的结果转换为 json 字符串。它不会将结果作为数组返回。

所以我建议您删除第一行命令中的 cmdlet ConvertTo-JSON。执行此操作后，该命令将结果作为对象数组返回。然后您的脚本将返回正确的结果。

例如（我在一个存储帐户中这样做）

Connect-AzAccount

$accountName =""
$groupName=""

$JSON_obj=(Get-AzStorageAccount -ResourceGroupName $groupName -Name $accountName  | Get-AzStorageContainer  | Get-AzStorageBlob )

$ParallelOperationThreadCount=@()
foreach($i in $JSON_obj)
{
$ParallelOperationThreadCount+=$i.ICloudBlob.ServiceClient.DefaultRequestOptions.ParallelOperationThreadCount

 }
$ParallelOperationThreadCount

此外，我们还可以将脚本简化如下。

$ParallelOperationThreadCount= (Get-AzStorageAccount -ResourceGroupName $groupName -Name $accountName  |
        Get-AzStorageContainer  | Get-AzStorageBlob|
        Select-Object -Property @{Name="ParallelOperationThreadCount";Expression={$_.ICloudBlob.ServiceClient.DefaultRequestOptions.ParallelOperationThreadCount}})

$ParallelOperationThreadCount

更新

请参考以下脚本

Connect-AzAccount

$accountName =""
$groupName=""

$JSON_obj=(Get-AzStorageAccount -ResourceGroupName $groupName -Name $accountName  | Get-AzStorageContainer  | Get-AzStorageBlob )

$ParallelOperationThreadCount=@()
foreach($i in $JSON_obj)
{
$ParallelOperationThreadCount+=$i.ICloudBlob.ServiceClient.DefaultRequestOptions.ParallelOperationThreadCount

 }
$ParallelOperationThreadCount

$JSON_obj|ConvertTo-JSON -Depth 50 | % { [System.Text.RegularExpressions.Regex]::Unescape($_) } | Out-File -Encoding Ascii - append C:\Users\rakshitas\Documents\json_excel\blob.json

azure-powershell azure-storage-blobs powershell powershell