PowerShell腳本無法從Windows任務計劃程序正常工作

Question

概述： 我有一個腳本，用於通過WMI在SCCM中查詢新的應用程序請求。當在PowerShell控制檯中手動啓動時（無論是否升高，無關緊要），該腳本完美工作。我需要通過任務計劃程序運行腳本。目前設置爲使用管理員憑據運行，並選中「以最高權限運行」複選框。

問題： 無法從Windows Server 2008 R2中的任務計劃程序正確運行。沒有錯誤報告（任務調度返回0錯誤代碼），但它似乎並沒有過去進行讀取的行：

$GetAppRequest = Get-WmiObject -Class SMS_UserApplicationRequest -Namespace root/SMS/site_$SiteCode | Where-Object {$_.CurrentState -like "1"} | ForEach-Object { 

以下是完整的腳本：

#Hard-coded variables 
$SiteCode = "MySiteCode" 
$ComputerName = "My-SCCM-Server" 
$GUIDFilePath = "C:\Scripts\SCCM\GUIDList.txt" 
$FilePath = "C:\Scripts\SCCM" 
$smtpServers = "smtp1.domainname.com","smtp2.domainname.com" 
$reliableSmtpServer = $null 
$logpath = "C:\Scripts\SCCM\RequestLog.txt" 

#logging functionality 
function log($message, $type){ 
    $date = get-date 
    $string = "$date $type : $message" | Out-File $logpath -Append 
} 

#does log exist? 
if (gi -Path $logpath -ErrorAction SilentlyContinue){ 
    #yep, the log exists! 
    $logContent = cat $logpath 
    log -message "Script called and log opened for writing." -type "Info" 
} else { 
    #nope, the log doesn't exist, let's make one. 
    write "Can't find log file, creating a new one." 
    $newFileResult = New-Item -Path $logpath -ItemType File -ErrorAction Stop 
    if ($newFileResult.Exists){ 
    log -message "new log file created" -type "Info" 
    } #end if 
} #end else 

#Email variables 
$from = "no.reply@domainname.com" 
$to = "sccm-admin@domainname.com" 
$subject = "New SCCM Application Approval Requests" 

#Determine which SMTP to use. 
$smtpServers | ForEach-Object { 
    if ($reliableSmtpServer -eq $null){ 
    if (Test-Connection -ComputerName $_ -ErrorAction SilentlyContinue){ 
     write "Reliable SMTP server found: $_" 
     $reliableSmtpServer = $_  
    } #end if test-connection 
    } #end if reliableSmtpServer exists 
} #end foreach SMTP server 

if ($reliableSmtpServer){ 
    log -message "Reliable SMTP server found, $reliableSmtpServer" -type "Info" 
} else { 
    log -message "No reliable SMTP server could be found" -type "Error" 
} 

#Get the entries from GUIDList.txt 
if ($GetGUID = Get-Content -Path $GUIDFilePath -ErrorVariable guidReadError { 
    write "Successfully read $GUIDFilePath" 
    log -message "Successfully read $GUIDFilePath" -type "Info" 
} else { 
    Write-Error -Message "Couldn't read GUIDfile..." 
    log -message "Failed to read GUIDFile" -type "Error" 
} 

#Get all Application Requests with a CurrentState of "1" 
log -message 'Attempting to get all Application Requests with a CurrentState of 1' -type "Info" 
$GetAppRequest = Get-WmiObject -Class SMS_UserApplicationRequest -Namespace root/SMS/site_$SiteCode | Where-Object {$_.CurrentState -like "1"} | ForEach-Object { 
    log -message "App found, $_.Application" -type "Info" 
    if ($GetGUID -contains $_.RequestGuid) { 
    Write-Host "Application request $($_.RequestGuid) already present" 
    log -message "Application request $($_.RequestGuid) already present" -type "Info" 
    } else { 
    $appUser = $_.User 
    $appName = $_.Application 
    $appComment = $_.Comments 
    $Body = @" 
    Application request: $appName 
    User: $appUser 

    Comment: $appComment 
    "@ #This row can't contain any blank spaces or tabs 

    log -message "New record found: $appUser, $appName, $appComment" -type "Info" 

    #Email configuration 
    Send-MailMessage -SmtpServer $reliableSmtpServer -From $from -To $to -Subject $subject -Body $body -ErrorVariable mailError 
    if (!($mailError)){ 
    write "Message successfully sent to : $to" 
    log -message "Message successfully sent to : $to" -type "Info" 
    } else { 
    Write-Error -message "Failed to send email!" 
    log -message "Failed to send email!" -type "Error" 
    } #end else 

    #Append the current objects GUID to GUIDList.txt 
    Write "Appending $($_.RequestGUID) to $GUIDFilePath" 
    log -message "Appending $($_.RequestGUID) to $GUIDFilePath" -type "Info" 
$_.RequestGuid | Out-File $GUIDFilePath -Append 

    } #end else statement 
} #end forEach 

#Remove the GUIDList.txt file and re-create it when there's more than 100 entries 
$GUIDCount = $GetGUID.Count 
if ($GUIDCount -gt 100) { 
    log -message "Greater than 100 GUID entries, clearing list." -type "Info" 
    Get-Item $GUIDFilePath | Remove-Item 
    New-Item -Path $FilePath -Name GUIDList.txt -ItemType file 
} 

#Create a new log once the log file exceeds 1000 lines. 
$logCount = $logContent.Count 
if ($logCount -gt 1000) { 
    log -message "Log file is too long, removing log" -type "Warning" 
    Remove-Item $logpath 
} 

這是計劃任務XML：

<?xml version="1.0" encoding="UTF-16"?> 
<Task version="1.3" xmlns="http://schemas.microsoft.com/windows/2004/02/mit/task"> 
    <RegistrationInfo> 
    <Date>2014-05-09T17:10:48.6636926</Date> 
    <Author>domainname\myUserAccount</Author> 
    <Description>Runs a script located at C:\scripts\SCCM to determine if there are any new application requests and notify IT staff via Email.</Description> 
    </RegistrationInfo> 
    <Triggers> 
    <TimeTrigger> 
     <Repetition> 
     <Interval>PT15M</Interval> 
     <StopAtDurationEnd>false</StopAtDurationEnd> 
     </Repetition> 
     <StartBoundary>2014-05-09T17:12:04</StartBoundary> 
     <ExecutionTimeLimit>PT1H</ExecutionTimeLimit> 
     <Enabled>true</Enabled> 
    </TimeTrigger> 
    </Triggers> 
    <Principals> 
    <Principal id="Author"> 
     <UserId>domain\AdminAccount</UserId> 
     <LogonType>Password</LogonType> 
     <RunLevel>HighestAvailable</RunLevel> 
    </Principal> 
    </Principals> 
    <Settings> 
    <MultipleInstancesPolicy>IgnoreNew</MultipleInstancesPolicy> 
    <DisallowStartIfOnBatteries>true</DisallowStartIfOnBatteries> 
    <StopIfGoingOnBatteries>true</StopIfGoingOnBatteries> 
    <AllowHardTerminate>true</AllowHardTerminate> 
    <StartWhenAvailable>false</StartWhenAvailable> 
    <RunOnlyIfNetworkAvailable>false</RunOnlyIfNetworkAvailable> 
    <IdleSettings> 
     <StopOnIdleEnd>true</StopOnIdleEnd> 
     <RestartOnIdle>false</RestartOnIdle> 
    </IdleSettings> 
    <AllowStartOnDemand>true</AllowStartOnDemand> 
    <Enabled>true</Enabled> 
    <Hidden>false</Hidden> 
    <RunOnlyIfIdle>false</RunOnlyIfIdle> 
    <DisallowStartOnRemoteAppSession>false</DisallowStartOnRemoteAppSession> 
    <UseUnifiedSchedulingEngine>false</UseUnifiedSchedulingEngine> 
    <WakeToRun>false</WakeToRun> 
    <ExecutionTimeLimit>P3D</ExecutionTimeLimit> 
    <Priority>7</Priority> 
    </Settings> 
    <Actions Context="Author"> 
    <Exec> 
     <Command>powershell.exe</Command> 
     <Arguments>-noprofile -file "C:\scripts\sccm\Notify.ps1"</Arguments> 
    </Exec> 
    </Actions> 
</Task> 

Answer 1

您是不是要將Get-WmiObject ... | Foreach-Object {行的結果賦值給$ GetAppRequest變量？我的意思是Foreach-Object循環的輸出被該賦值所捕獲，這看起來不是有意的，因爲你不再使用該變量。

我建議您對變量執行賦值，然後將變量單獨傳遞給Foreach-Object cmdlet，並將其間的某些日誌記錄分別傳遞給Foreach-Object cmdlet。此外，我們可以將Get-WmiObject包裝在try{}catch{}構造中以捕獲該cmdlet可能拋出的任何錯誤;確保捕獲錯誤時，我們設置-ErrorAction Stop：

try { 
    $GetAppRequest = Get-WmiObject -Class SMS_UserApplicationRequest -Namespace root/SMS/site_$SiteCode -ErrorAction Stop 
} 
catch { 
    log -message "Get-WmiObject cmdlet failed" -type "Error" 
    log -message $_.Exception.Message.ToString() -type "Error" 
} 

if(-not $GetAppRequest) { 
    log -message "Failed to retrieve WMI data" -type "Error" 

} elseif(-not ($GetAppRequest = $GetAppRequest | Where-Object {$_.CurrentState -like "1"})) { 
    log -message "No results with CurrentState = 1" -type "Info" 
} 

$GetAppRequest | ForEach-Object { 
    ... 

Answer 2

請與「運行，只有當用戶登錄」和hidd未選中複選框。