# 下载微信图片
$ProgressPreference = 'SilentlyContinue'
Add-Type -AssemblyName System.Web
[System.Net.ServicePointManager]::SecurityProtocol = 'Tls, Tls11, Tls12'
$dstdir = [io.path]::Combine([environment]::GetFolderPath([environment+specialfolder]::Desktop), 'ABC') # 下载保存目录
$di = [io.directory]::CreateDirectory($dstdir)
$result = Invoke-WebRequest -Uri 'https://mp.weixin.qq.com/s/YtWEQ_kORUmh97sAEMwUjw' -SessionVariable session1 # 下载地址url - $result.Content 乱码:utf8解析成ANSI
foreach ($img in $result.Images) {
  $src = if ($img.'data-src') { $img.'data-src' }else { $img.src }
  if (-not $src) { continue }
  $uri = [uri]$src
  $nvc = [System.Web.HttpUtility]::ParseQueryString($uri.Query)
  $wx_fmt = $nvc['wx_fmt']
  $picname = ($uri.Segments[-2] -replace '/') + ".${wx_fmt}"
  $picpath = [io.path]::Combine($di.FullName, $picname)
  "downloading: $src"
  Invoke-WebRequest -UseBasicParsing -Uri $uri -OutFile $picpath -WebSession $session1
}
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