PowerShell日志记录函数用法

function Write-Log {
    param(
        [Parameter(Mandatory=$true)]
        [ValidateNotNullOrEmpty()]
        [string]$Message,
        
        [Parameter()]
        [ValidateSet("Info", "Warning", "Error")]
        [string]$Level = "Info",
        
        [Parameter()]
        [string]$LogFile = "C:\Logs\script.log"
    )
    
    $timestamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
    $logEntry = "$timestamp [$Level] $Message"
    
    Write-Host $logEntry  # 输出日志到控制台
    
    Add-Content -Path $LogFile -Value $logEntry  # 追加日志到文本文件
    
    if ($Level -eq "Error") {
        Write-EventLog -LogName Application -Source "PowerShell" -EventId 1 -EntryType Error -Message $logEntry  # 写入事件日志
    }
}

Write-Log -Message "This is an informational message."
Write-Log -Message "This is a warning message." -Level "Warning"
Write-Log -Message "This is an error message." -Level "Error"