Powershell

Question

我正在尝试遍历一个文件夹，获取文件夹中每个文件的文件名，然后将该文件名分配给一个变量。稍后我会在散列 table 中使用该变量。这是我遇到问题并不断收到此错误的地方：

At C:\Users\jnwankwo\Documents\IUR.ps1:19 char:16
+ Files.Add(fName, Counter)
+                ~
Missing argument in parameter list.

代码如下：

$folder = 'C:\Users\jnwankwo\Documents\IUR Test\r' # Enter the root path you          want to monitor. 
$Failedfolder = 'C:\Users\jnwankwo\Documents\IUR Test\r'
$filter = '*.*'  # You can enter a wildcard filter here. 
$Files = @{}
$Counter = 1


# In the following line, you can change 'IncludeSubdirectories to $true if         required.                           
$fsw = New-Object IO.FileSystemWatcher $folder, $filter -Property     @{IncludeSubdirectories = $false;NotifyFilter = [IO.NotifyFilters]'FileName,     LastWrite'} 

Register-ObjectEvent $fsw Created -SourceIdentifier FileCreated -Action { 

ForEach ($file in folder) { 

$fName = file.Name

if (Files.ContainsKey(fName) = false)
{

Files.Add(fName, Counter)

}

if ((Files.ContainsKey(fName) = true) -and (Files.Item(fName) -lt 3))
{
Move-Item C:\Users\jnwankwo\Documents\IUR Test\r\*.txt     C:\Users\jnwankwo\Documents\IUR Test -force
Files.Set_Item(fName, Counter++)

}
ElseIf ((Files.ContainsKey(fName) = true) -and (Files.Item(fName) == 3))
{
Files.Remove(fName)
Move-Item C:\Users\jnwankwo\Documents\IUR Test\r\*.txt Failedfolder -force
}

}

}

有人可以帮忙吗？

Answer 1

您缺少变量前的 $。所以将所有 fName 替换为 $fName。您还必须将 file.Name 重命名为 $file.Name。您还错过了 Files.Add($fName, Counter) 中 Counter 上的 $，您必须写 $false 而不是 false...

这应该是固定版本：

$folder = 'C:\Users\jnwankwo\Documents\IUR Test\r' # Enter the root path you          want to monitor. 
$Failedfolder = 'C:\Users\jnwankwo\Documents\IUR Test\r'
$filter = '*.*'  # You can enter a wildcard filter here. 
$Files = @{}
$Counter = 1


# In the following line, you can change 'IncludeSubdirectories to $true if         required.                           
$fsw = New-Object IO.FileSystemWatcher $folder, $filter -Property     @{IncludeSubdirectories = $false;NotifyFilter = [IO.NotifyFilters]'FileName,     LastWrite'} 

Register-ObjectEvent $fsw Created -SourceIdentifier FileCreated -Action { 

    ForEach ($file in $folder) 
    { 
        $fName = $file.Name

        if (-not $Files.ContainsKey($fName))
        {
            $Files.Add($fName, $Counter)
        }

        if (($Files.ContainsKey($fName)) -and ($Files.Item($fName) -lt 3))
        {
            Move-Item 'C:\Users\jnwankwo\Documents\IUR Test\r\*.txt'  'C:\Users\jnwankwo\Documents\IUR Test' -force
            $Files.Set_Item($fName, $Counter++)

        }
        ElseIf (($Files.ContainsKey($fName)) -and ($Files.Item($fName) -eq 3))
        {
            $Files.Remove($fName)
            Move-Item 'C:\Users\jnwankwo\Documents\IUR Test\r\*.txt' $Failedfolder -force
        }
    }
}

Answer 2

是的，正如 jisaak 所说，您错过了带有表达式的变量。

所以用变量替换所有声明可能会解决问题。

此外，还有一件事，当您下次尝试创建任何 powershell 脚本时，请尝试使用 PSDebug cmdlet 来调试您的脚本。它非常方便。我觉得很有用。

只需在运行脚本之前或脚本顶部添加以下代码。

Set-PSDebug -Trace 1

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