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nodejs 如何优雅的检测 java 是否安装和安装的版本？

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nodejs 如何优雅的检测 java 是否安装和安装的版本？

检测是否安装JAVA， 和JAVA安装的版本号
请问除了利用 exec 执行 java -version 获取结果外
有没有更优雅的方式来检测？


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没了

即使在 windows下,使用 安装工具版本安装的 java,可能还有注册表可以读下.还有些就直接下载压缩包,解压之后,添加几个环境变量就好了,有些甚至连环境变量都不配置.


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