Powershell脚本停止在try/catch块中捕获的异常; $ ErrorActionPreference

Question

问题：PowerShell脚本停止，因为这应该由try块使用$ ErrorActionPreference时被捕获的异常的

例子：

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

Answer 1

解决方案：Write-Error实际上默认会抛出非终止异常。当$ErrorActionPreference = 'Stop'被设置时，Write-Error在catch块中抛出一个终止异常。

覆盖此使用-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'