Question

我正在PowerShell中编写一个工具，其中包括一个基于用户输入创建文件夹结构的功能。以下是相关代码：

<img class="pic" src="https://i.stack.imgur.com/FHNjC.png" />
<div class="invisible"></div>

.invisible {
  position:relative;
  top:-350px;
  left: 100px;
  background:#000;
  width:200px;
  height:300px;
}

如果我运行它，它会触发catch语句并抛出以下错误：

function set-drvsource{
    Write-Host "INFO: Querying Driver Source" -ForegroundColor Yellow
    }
    try{
        Write-Host "INFO: Creating standard folder structure" -ForegroundColor Yellow
        New-Item -ItemType Directory -Path "$drvpath" | Out-Null
        New-Item -ItemType Directory -Path "$drvpath\Source" | Out-Null
        New-Item -ItemType Directory -Path "$drvpath\Package" | Out-Null
    }
    catch{
        Write-Host "ERROR: Could not create folder structure" -ForegroundColor Red
        Exit
    }
    Write-Host "INFO: Moving local source to new source" -ForegroundColor Yellow
    Copy-Item $src "$drvpath\Source" -Recurse
}
function main{
    set-drvsource
}
$drvroot = "\\server\share\tmp"
$src = Read-Host "Please provide local driver source path"
$vendor = Read-Host "Device Vendor eg. DELL, HP, Microsoft"
$dmd = Read-Host "Device Model eg. HP Elitebook 840 G3"
$dos = Read-Host "Operating System eg. W7 or W10"
$dac = Read-Host "x64 or x86"
$drvpath = "$drvroot\$vendor\$dmd $dos $dac"

有趣的是，如果我在新的PowerShell会话中运行以下内容，它会按预期工作：

$Error[0]
New-Item : Object reference not set to an instance of an object.
At line:9 char:1
+ New-Item -ItemType Directory -Path "$drvpath" | Out-Null
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [New-Item], NullReferenceException
    + FullyQualifiedErrorId : System.NullReferenceException,Microsoft.PowerShell.Commands.NewI 
   temCommand

我加倍检查并且$ drvpath确实存活到函数中，所以它不是范围问题？任何帮助将非常感激！：'（

编辑：输出$ ERROR [0] | fl -force

$drvroot = "\\server\share\tmp"
$vendor = Read-Host "Vendor"
$dmd = Read-Host "Device Model eg. HP Elitebook 840 G3"
$dos = Read-Host "Operating System eg. W7 or W10"
$dac = Read-Host "x64 or x86"
$drvpath = "$drvroot\$vendor\$dmd $dos $dac"
New-Item -ItemType Directory -Path "$drvpath" | Out-Null
New-Item -ItemType Directory -Path "$drvpath\Source" | Out-Null
New-Item -ItemType Directory -Path "$drvpath\Package" | Out-Null

Answer 1

使用FileSystem提供程序定义$ drvroot变量，就像PetSerAl建议的那样，解决了这个问题。

PowerShell New-item - 未将对象引用设置为对象的实例

1 个答案: