实现效果:
实现代码:
function Download-Wallpaper { Param ( [Parameter(Mandatory=$true)] $Folder, [Parameter(ValueFromPipeline)] [int] $Page=1 ) Begin { $url="http://wallpaperswide.com/page/$Page" $targetExists=Test-Path -Path $Folder if(!$targetExists){New-Item -Path $Folder -ItemType Directory} } Process { $web=Invoke-WebRequest -Uri $url -UseBasicParsing $web.Images.src| ForEach-Object{ $filename=$_.split('/')[-1].Replace('t1.jpg','wallpaper-1366x768.jpg') $source="http://wallpaperswide.com/download/$filename" $TargetPath=Join-Path -Path $Folder -ChildPath $filename Invoke-WebRequest -Uri $source -OutFile $TargetPath } } End { explorer $Folder } }