powershell 使用System.Net命名空间中的WebClient类的DownloadFile方法下载文件

Posted 2021-05-23

function Get-FileWCSynchronous{
    param(
        [Parameter(Mandatory=$true)]
        $url, 
        $destinationFolder="$env:USERPROFILE\Downloads",
        [switch]$includeStats
    )
    $wc = New-Object Net.WebClient
    $wc.UseDefaultCredentials = $true
    $destination = Join-Path $destinationFolder ($url | Split-Path -Leaf)
    $start = Get-Date
    $wc.DownloadFile($url, $destination)
    $elapsed = ((Get-Date) - $start).ToString('hh\:mm\:ss')
    $totalSize = (Get-Item $destination).Length | Get-FileSize
    if ($includeStats.IsPresent){
        [PSCustomObject]@{Name=$MyInvocation.MyCommand;TotalSize=$totalSize;Time=$elapsed}
    }
    Get-Item $destination | Unblock-File
}