Question

我们正在尝试批量检索所有已安装的打印机。为此，我们使用-AsJob CmdLet上的Get-Printer开关。当所有ComputerNames存在时，这种方法就可以正常工作，但是当不存在一个$ComputerName = @('Computer1', 'NonExisting', 'Computer2') $GetPrinterJobs = Foreach ($C in $ComputerName) { Get-Printer -ComputerName $C -AsJob } $GetPrinterJobs | Wait-Job -EA Ignore | Receive-Job时，则会正确引发错误。

示例

NonExisting

此代码将为NonExisting ComputerName引发一个错误。怎么可能发现错误实际上来自ComputerName $GetPrinterJobs = Foreach ($C in $ComputerName) { $C Get-Printer -ComputerName $C -AsJob } $null = Get-Job | Wait-Job -EA Ignore $GetPrinterJobResults = for ( $i = 0; $i -lt $GetPrinterJobs.Count; $i += 2 ) { $ReceiveParams = @{ ErrorVariable = 'JobError' ErrorAction = 'SilentlyContinue' } $ReceivedJobResult = $GetPrinterJobs[$i + 1] | Receive-Job @ReceiveParams [PSCustomObject]@{ ComputerName = $GetPrinterJobs[$i] State = $GetPrinterJobs[$i + 1].State Data = $ReceivedJobResult Error = if ($JobError) { $JobError $JobError.ForEach( { $Error.Remove($_) }) } } } $GetPrinterJobResults？

Get-Printer：无法访问后台处理程序服务。确保后台处理程序服务正在运行。

通过@JosefZ的以下帮助，已已解决，如下所示：

CREATE TABLE `destinations` (
  `id` int(50) NOT NULL,
  `name` varchar(225) NOT NULL,
  `description` text NOT NULL,
  `code` int(50) NOT NULL,
  `menu_code` int(50) NOT NULL,
  `menu_position` int(50),
  `status` tinyint(3) NOT NULL,
  `price` DOUBLE(50) NOT NULL);

Answer 1

这是我的老派解决方法：

$ComputerName = @('Computer1', 'NonExisting', 'Computer2')

$GetPrinterJobs = Foreach ($C in $ComputerName) {
    $C
    Get-Printer -ComputerName $C -AsJob
}

$GetPrinterJobResults = $GetPrinterJobs | 
    Where-Object { $_.GetType().Name -ne 'String'} | 
        Wait-Job -EA Ignore | Receive-Job

for ( $i = 0; $i -lt $GetPrinterJobs.Count; $i+=2 ) {
    @{
        $GetPrinterJobs[$i] = $GetPrinterJobs[$i + 1].State
    }
}

应该返回类似

的内容

Name          Value                                               
----          -----                                               
Computer1     Completed                                           
NonExisting   Failed                                              
Computer2     Completed

Get-Printer -AsJob如何在出错时查找ComputerName

1 个答案: