Powershell腳本停止在try/catch塊中捕獲的異常; $ ErrorActionPreference

Question

問題：PowerShell腳本停止，因爲這應該由try塊使用$ ErrorActionPreference時被捕獲的異常的

例子：

$ErrorActionPreference = 'Stop' 
try { 
    ThisCommandWillThrowAnException 
} catch { 
    Write-Error 'Caught an Exception' 
} 
# this line is not executed. 
Write-Output 'Continuing execution' 

Answer 1

解決方案：Write-Error實際上默認會拋出非終止異常。當$ErrorActionPreference = 'Stop'被設置時，Write-Error在catch塊中拋出一個終止異常。

覆蓋此使用-ErrorAction 'Continue'

$ErrorActionPreference = 'Stop' 
try { 
    ThisCommandWillThrowAnException 
} catch { 
    Write-Error 'Caught an Exception' -ErrorAction 'Continue' 
} 
# this line is now executed as expected 
Write-Output 'Continuing execution'