# 设置Java SDK 环境变量

$softwares = Get-ItemProperty HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*

#$jdk = $softwares  | Where-Object DisplayName -Match 'Java SE Development Kit'

#$RegPath = 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion'

$key = Get-ItemProperty -Path "Registry::$softwares"

$jdk = $softwares  | Where-Object DisplayName -Match 'Java SE Development Kit'

if ($jdk.Count -gt 1) {

    Write-Host "找到多个JDK安装程序:"

    $id = 1

    foreach ($e in $jdk) {

        Write-Host "${id}." $e.DisplayName

        $id++

    }

    $choice = [int](Read-Host -Prompt "应该使用哪个?")

    $jdk = $jdk[$choice]

}

$install_location = $jdk.InstallLocation.trim('\')

# 去掉路径最后的斜杠

Write-Host "发现安装位置: ${install_location}"

# 配置环境变量

$java_home = $install_location

$classpath = "%JAVA_HOME%\lib;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar"

$path = "%JAVA_HOME%\bin;" + $env:Path

[Environment]::SetEnvironmentVariable("JAVA_HOME", $java_home, "Machine")

[Environment]::SetEnvironmentVariable("CLASS_PATH", $classpath, "Machine")

[Environment]::SetEnvironmentVariable("PATH", $path , "Machine")

Write-Host "配置JDK环境变量成功"