mac 下明明下載安裝了 JDK1.8，但是就是說沒有。我在終端下java -version 會提示No Java runtime present, requesting install. 然后我我通過 vim .bash_profile export JAVA_HOME="/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home" export PATH=${JAVA_HOME}/bin:$PATH source .bash_profile 這樣操作 添加了環境 MacBook-Pro% java -version java version "1.8.0_151" Java(TM) SE Runtime Environment (build 1.8.0_151-b12) Java HotSpot(TM) 64-Bit Server VM (build 25.151-b12, mixed mode) 然后我去AS中的終端 輸入java -version還是找不到環境 MacBook-Pro% ./gradlew clean No Java runtime present, requesting install. MacBook-Pro% gradle clean zsh: command not found: gradle MacBook-Pro% java -version No Java runtime present, requesting install. MacBook-Pro% ./gradlew clean No Java runtime present, requesting install. 然后我發現只要我終端一關閉，那么環境變量又被恢復了。(我通過env查看)。這是什么原因？不是root用戶嗎？抓狂