PowerShell: Try...Catch...Finally 实现方法
摘要：复制代码代码如下:functionTry{param([ScriptBlock]$Command=$(throw"Theparameter-...
复制代码 代码如下:
function Try
{
param
(
[ScriptBlock]$Command = $(throw "The parameter -Command is required."),
[ScriptBlock]$Catch = { throw $_ },
[ScriptBlock]$Finally = {}
)
& {
$local:ErrorActionPreference = "SilentlyContinue"
trap
{
trap
{
& {
trap { throw $_ }
&$Finally
}
throw $_
}
$_ | & { &$Catch }
}
&$Command
}
& {
trap { throw $_ }
&$Finally
}
}
使用示例：
复制代码 代码如下:
# Example usage
Try {
echo " ::Do some work..."
echo " ::Try divide by zero: $(0/0)"
} -Catch {
echo " ::Cannot handle the error (will rethrow): $_"
#throw $_
} -Finally {
echo " ::Cleanup resources..."
}
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