捕获 powershell 警告

Question

如果我尝试从一开始没有权限的人的邮箱中删除邮箱权限，我正在尝试捕获引发的警告。

#$WarningPreference = "continue"
try
{
Add-PSSnapin Microsoft.Exchange.Management.PowerShell.E2010
Remove-MailboxPermission -Identity "test2" -User "test1" -AccessRights FullAccess -InheritanceType All -confirm:$False | Out-File c:\temp\output2.txt -Encoding ASCII
}
catch
{
#Write-Warning -Message $($_.Exception.Message) 3 > c:\temp\warning.txt
}

在 output2.txt 或 warning.txt 中都没有输出 - 我做错了什么？

我试图捕获的警告显示为黄色并说：

WARNING: The cmdlet extension agent with the index 0 has thrown an exception in OnComplete(). The exception is:
System.InvalidOperationException: Operation is not valid due to the current state of the object.
   at Microsoft.Exchange.Data.Storage.ExchangePrincipal.get_ServerFullyQualifiedDomainName()
   at Microsoft.Exchange.Data.Storage.MailboxSession.Initialize(MapiStore linkedStore, LogonType logonType,
ExchangePrincipal owner, DelegateLogonUser delegateUser, Object identity, OpenMailboxSessionFlags flags,
GenericIdentity auxiliaryIdentity)
   at Microsoft.Exchange.Data.Storage.MailboxSession.<>c__DisplayClass12.<CreateMailboxSession>b__10(MailboxSession
mailboxSession)
   at Microsoft.Exchange.Data.Storage.MailboxSession.InternalCreateMailboxSession(LogonType logonType,
ExchangePrincipal owner, CultureInfo cultureInfo, String clientInfoString, IAccountingObject budget, Action`1
initializeMailboxSession, InitializeMailboxSessionFailure initializeMailboxSessionFailure)
   at Microsoft.Exchange.Data.Storage.MailboxSession.ConfigurableOpen(ExchangePrincipal mailbox, MailboxAccessInfo
accessInfo, CultureInfo cultureInfo, String clientInfoString, LogonType logonType, PropertyDefinition[]
mailboxProperties, InitializationFlags initFlags, IList`1 foldersToInit, IAccountingObject budget)
   at Microsoft.Exchange.Data.Storage.MailboxSession.OpenAsSystemService(ExchangePrincipal mailboxOwner, CultureInfo
cultureInfo, String clientInfoString)
   at Microsoft.Exchange.ProvisioningAgent.MailboxLoggerFactory.XsoMailer.Log(AdminLogMessageData data,
LogMessageDelegate logMessage)
   at Microsoft.Exchange.ProvisioningAgent.AdminLogProvisioningHandler.OnComplete(Boolean succeeded, Exception e)
   at Microsoft.Exchange.Provisioning.ProvisioningLayer.OnComplete(Task task, Boolean succeeded, Exception exception)
WARNING: Can't remove the access control entry on the object "CN=xxxxx" for account "xxxxx" because the ACE doesn't exist on the
object.

感谢到目前为止的所有帮助！我的代码现在看起来像这样：

$WarningPreference = "continue"
try
{
Add-PSSnapin Microsoft.Exchange.Management.PowerShell.E2010
Remove-MailboxPermission -Identity "test1" -User "test2" -AccessRights FullAccess -InheritanceType All -confirm:$False 2> c:\temp\errors.txt 3> c:\temp\warnings.txt -ErrorAction Stop
}
catch
{
2> c:\temp\errors.txt
}

*最终解决方案 - 谢谢大家*

$WarningPreference = "continue"
try
{
Add-PSSnapin Microsoft.Exchange.Management.PowerShell.E2010
Remove-MailboxPermission -Identity "test1" -User test2" -AccessRights FullAccess -InheritanceType All -confirm:$False 2> c:\temp\errors.txt 3> c:\temp\warnings.txt -ErrorAction Stop
}
catch
{
$_ > c:\temp\errors.txt
}

Answer 1

使用 -WarningAction 和 -WarningVariable 常用参数将警告捕获到变量并使其不显示到控制台。

Remove-MailboxPermission -Identity "test2" -User "test1" -AccessRights FullAccess -InheritanceType All -confirm:$False | Out-File c:\temp\output2.txt -Encoding ASCII -WarningAction SilentlyContinue -WarningVariable CapturedWarning

那么，$CapturedWarning 中应该有警告。

Answer 2

将-WarningAction Stop 或-ErrorAction Stop 添加到您的Remove-MailboxPermission 命令中：

try
{
Add-PSSnapin Microsoft.Exchange.Management.PowerShell.E2010
Remove-MailboxPermission -Identity "test2" -User "test1" -AccessRights FullAccess -InheritanceType All -confirm:$False -WarningAction Stop -ErrorAction Stop | Out-File c:\temp\output2.txt -Encoding ASCII
}
catch
{
#Write-Warning -Message $($_.Exception.Message) 3 > c:\temp\warning.txt
}

Answer 3

鉴于问题的通用标题，让我先回顾一下捕获警告的工作原理一般情况：

• 到一个文件 比如warnings.txt: 和3> warnings.txt

  • 抑制临时警告：3> $null

• 在一个变量中，例如$warnings: 和-WarningVariable warnings (-wv warnings)

  • 但是，仍然通过警告并因此打印它们，所以为了防止您必须也使用3> $null。

请注意，这些构造必须应用于产生警告的命令，因为（默认情况下）只有 success 输出流（索引为 1 的流）通过管道发送：

# OK - saves warnings to file 'warnings.txt' without printing them.
Do-Stuff 3> warnings.txt | Out-File out.txt

# INCORRECT - still prints warnings, because they are NOT sent through the 
#             pipeline, and then creates empty file 'warnings.txt', because
#             Out-File itself produces no warnings.
Do-Stuff | Out-File out.txt 3> warnings.txt

---

至于你尝试了什么：

在 output2.txt 或 warning.txt 中都没有输出

• 推测output2.txt 中没有输出，因为Remove-MailboxPermission 在引发异常时还没有产生任何成功 输出。当异常发生时，控制权立即转移到catch 处理程序，因此管道在此处停止，Out-File 永远不会接收来自Remove-MailboxPermission 的成功流的输入。

  • 注意try/catch只有在Remove-MailboxPermission默认产生statement-terminating错误时才会生效；要使其对非终止错误也生效，请添加-ErrorAction Stop。
    如果Remove-MailboxPermission 产生只是 警告 - 并且根本没有错误 - 那么try / catch 将没有任何效果。

• warning.txt 中没有输出（即使通过删除初始 # 重新激活该行），因为 try / catch 仅捕获 错误 输出，而不是警告；也就是说，在处理 catch 处理程序时，警告已经打印。