SQL Server 2012序列号里字符的格式发生了变化，$binArray = ($data.uValue)[0..16] 不同于SQL Server 2008的$binArray = ($data.uValue)[52..66]，同时别忘了改下注册表路径$regPath = "SOFTWAREMicrosoftMicrosoft SQL Server110ToolsSetup"，修改后如下，在SQL Server 2012实例上测试通过：
function Get-SQLServerKey {
## function to retrieve the license key of a SQL 2012 Server.
## by Jakob Bindslet (jakob@bindslet.dk)
## 2012 Modification by Xian Wang (daanno2@gmail.com)
param ($targets = ".")
$hklm = 2147483650
$regPath = "SOFTWAREMicrosoftMicrosoft SQL Server110ToolsSetup"
$regValue1 = "DigitalProductId"
$regValue2 = "PatchLevel"
$regValue3 = "Edition"
Foreach ($target in $targets) {
$productKey = $null
$win32os = $null
$wmi = [WMIClass]"\$target ootdefault:stdRegProv"
$data = $wmi.GetBinaryValue($hklm，$regPath，$regValue1)
[string]$SQLver = $wmi.GetstringValue($hklm，$regPath，$regValue2).svalue
[string]$SQLedition = $wmi.GetstringValue($hklm，$regPath，$regValue3).svalue
$binArray = ($data.uValue)[0..16]
$charsArray = "B"，"C"，"D"，"F"，"G"，"H"，"J"，"K"，"M"，"P"，"Q"，"R"，"T"，"V"，"W"，"X"，"Y"，"2"，"3"，"4"，"6"，"7"，"8"，"9"
## decrypt base24 encoded binary data
For ($i = 24; $i -ge 0; $i--) {
$k = 0
For ($j = 14; $j -ge 0; $j--) {
$k = $k * 256 -bxor $binArray[$j]
$binArray[$j] = [math]::truncate($k / 24)
$k = $k % 24
}
$productKey = $charsArray[$k] + $productKey
If (($i % 5 -eq 0) -and ($i -ne 0)) {
$productKey = "-" + $productKey
}
}
$win32os = Get-WmiObject Win32_OperatingSystem -computer $target
$obj = New-Object Object
$obj | Add-Member Noteproperty Computer -value $target
$obj | Add-Member Noteproperty OSCaption -value $win32os.Caption
$obj | Add-Member Noteproperty OSArch -value $win32os.OSArchitecture
$obj | Add-Member Noteproperty SQLver -value $SQLver
$obj | Add-Member Noteproperty SQLedition -value $SQLedition
$obj | Add-Member Noteproperty ProductKey -value $productkey
$obj
}
}
　　3. 调用powershell函数并输出序列号
　　打开powershell，把上面的函数贴进去，回车，输入Get-SQLServerKey 并回车；
　　或者把上面的函数存为.ps1文件直接引用：
　　PS C:Windowssystem32> . C:UsersusernameDesktoppk.ps1
　　PS C:Windowssystem32> Get-SQLserverKey
　　输出结果如下，首尾几个字符被人为改成星号，没有贴出来。
　　Computer   : .
　　OSCaption  : Microsoft Windows Server 2012 R2 Standard
　　OSArch     : 64-bit
　　SQLver     : 11.2.5058.0
　　SQLedition : Developer Edition
　　ProductKey : *****-G8T4R-QW4XX-BVH62-*****
　　对于SQL Server 2000， 2005，由于手头没有环境，没有测试；对于Office，Windows系统，应该也都可以通过类似的方式拿到序列号。