在之前的小技巧中,我们曾经引入过,一个有声的进度条。在powershell正在做某项忙碌的任务时,可以一直让它播放某段音乐。代码如下:
# 在windows 文件夹下面找到要给可用的wav音频文件
$wavpath = get-childitem -path $env:windir -filter *.wav -recurse -erroraction silentlycontinue |
select-object -first 1 -expandproperty fullname
# 加载并播放
$player = new-object media.soundplayer $wavpath
$player.playlooping()
1..100 | foreach-object {
write-progress -activity 'doing something. hang in' -status $_ -percentcomplete $_
start-sleep -milliseconds (get-random -minimum 300 -maximum 1300)
}
$player.stop()
脚本本来运行正常,但是当你终止了它,比如使用ctrl+c来终止,此时脚本运行立马结束。最后一行的$player.stop()来不及执行,提示声音仍旧在余音绕梁,三日不绝。
解决办法,将最后一句收尾工作的$player.stop()放在finally语句中:
# 在windows文件夹找到wav音频问
$wavpath = get-childitem -path $env:windir -filter *.wav -recurse -erroractionsilentlycontinue |
select-object -first 1 -expandproperty fullname
# 加载并播放
$player = new-object media.soundplayer $wavpath
try
{
$player.playlooping()
1..100 | foreach-object {
write-progress -activity 'doing something' -status $_ -percentcomplete $_
start-sleep -milliseconds (get-random -minimum 300 -maximum 1300)
}
}
finally
{
$player.stop()
}
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