尝试，catch 似乎没有用 [英] try, catch doesent seem to work

问题描述

我有以下代码，我认为它可以让我捕获错误，而不是生成错误，写出发生错误".

I have the following code which I thought would allow me to catch an error and instead of generating the error write out "An Error Occurred".

不幸的是，它仍然显示错误无法重新启动计算机:访问被拒绝".

Unfortunately, it still shows the error "Failed to restart the computer: Access is denied" instead.

我知道为什么会发生这种情况，但我希望能够捕获错误并重新格式化.我做错了什么?

I know why this is happening but I want to be able to catch the error and reformat it. What am I doing wrong?

try {
    Restart-Computer -ComputerName MFG-KY-PC74 -Force 
} catch {
    Write-Host "An Error Occurred"
}

推荐答案

在 PowerShell 中存在终止和非终止错误.前者终止脚本执行(如果没有被捕获)并且可以被 try..catch 捕获，后者不终止脚本执行(所以没有什么可捕获的).您收到的错误是非终止错误，因此您需要通过将 -ErrorAction Stop 附加到语句来使其成为终止错误:

In PowerShell there are terminating and non-terminating errors. The former terminate script execution (if not caught) and can be caught by try..catch, the latter don't terminate script execution (so there's nothing to catch). The error you're receiving is a non-terminating one, so you need to make it a terminating error by appending -ErrorAction Stop to the statement:

try {
  Restart-Computer -ComputerName MFG-KY-PC74 -Force -ErrorAction Stop
} catch {
  write-host "An Error Occurred"
}

或者，如果您希望所有错误都变成终止错误，您可以设置 $ErrorActionPreference = "Stop".

Alternatively you can set $ErrorActionPreference = "Stop" if you want all errors to become terminating errors.

参见 这篇文章位于脚本专家博客上，了解更多信息.

See this article on the Scripting Guy blog for more information.

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