mac 系统升级到12.4后 mvn 命令 报错：No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?

Mac OS系统升级到12.4之后，mvn命令忽然不能使用，报错：No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK? 搜了许多办法不管用，后来修改了mvn启动命令解决。

找到maven的bin目录，找到mvn文件，vim mvn，增加一行JAVA_HOME=${JAVA_HOME}。替换成自己实际目录。