在 Mac 設(shè)備的終端執(zhí)行命令 ./gradlew :xxx:clean :xxx:assembleRelease 編譯 xxx.aar 時泳姐，報錯：
> Task :xxx:compileReleaseJavaWithJavac FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':xxx:compileReleaseJavaWithJavac'.
> Could not find tools.jar. Please check that /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home contains a valid JDK installation.
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
解決方案：
第一步：查看 java 版本萝玷，執(zhí)行命令：java -version
第二步：查看 javac 版本，執(zhí)行命令：javac -version
第三步：如果 java 和 javac 版本不一致惊橱，或者需要升級 java, javac 版本，在終端執(zhí)行命令 /usr/libexec/java_home -V | grep jdk抵拘，獲取 java 虛擬機列表
/usr/libexec/java_home -V | grep jdk
Matching Java Virtual Machines (2):
1.8.321.07 (x86_64) "Oracle Corporation" - "Java" /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home
1.8.0_321 (x86_64) "Oracle Corporation" - "Java SE 8" /Library/Java/JavaVirtualMachines/jdk1.8.0_321.jdk/Contents/Home
第四步：移除所有 java 虛擬機
rm -rf /Library/Internet Plug-Ins/JavaAppletPlugin.plugin
rm -rf /Library/Java/JavaVirtualMachines
第五步：下載 JDK（Java SE Developent Kit) 并安裝，下載地址：https://www.oracle.com/java/technologies/downloads/#java8-mac
第六步：在 ~/.zshrc 或者 ~/.bash_profile 文件里配置環(huán)境變量 JAVA_HOME琼蚯，此處以 ~/.zshrc 為例，在終端執(zhí)行命令 vi ~/.zshrc惠况，配置環(huán)境變量
export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_321.jdk/Contents/Home
export PATH=$JAVA_HOME/bin:$PATH
溫馨提示：
- 不要使用路徑 Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home凌停，使用該路徑會報錯 “Could not find tools.jar. Please check that /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home contains a valid JDK installation.”
- 不配置環(huán)境變量 JAVA_HOME，也會報錯 “Could not find tools.jar. Please check that /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home contains a valid JDK installation.”
第七步：執(zhí)行命令 source ~/.zshrc后售滤，重啟下終端
第八步：再次執(zhí)行編譯 xxx.aar 的命令：./gradlew :xxx:clean :xxx:assembleRelease ，成功打包出 .aar
