MacOSJAVA_HOME设置

个人博客地址：Mac OS JAVA_HOME设置 | 一张假钞的真实世界

在MacOS上使用DMG文件安装了Jdk8 之后，在默认路径下找不到JDK的HOME路径：

$ which java /usr/bin/java $ ls -l /usr/bin/java lrwxr-xr-x 1 root wheel 74 12 6 2015 /usr/bin/java -> /System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands/java $ ls -l /System/Library/Frameworks/JavaVM.framework/Versions total 8 drwxr-xr-x 10 root wheel 340 5 9 20:45 A lrwxr-xr-x 1 root wheel 1 12 6 2015 Current -> A $ ls -l /System/Library/Frameworks/JavaVM.framework/Versions/A/ total 80 drwxr-xr-x 47 root wheel 1598 10 18 2015 Commands drwxr-xr-x 4 root wheel 136 10 18 2015 Frameworks drwxr-xr-x 14 root wheel 476 8 2 2015 Headers drwxr-xr-x 3 root wheel 102 8 23 2015 JavaPluginCocoa.bundle -rwxr-xr-x 1 root wheel 109488 10 18 2015 JavaVM drwxr-xr-x 3 root wheel 102 8 2 2015 Modules drwxr-xr-x 45 root wheel 1530 10 18 2015 Resources drwxr-xr-x 3 root wheel 102 8 23 2015 _CodeSignature

在MacOS下可以使用/usr/libexec/java_home命令来定位JAVA_HOME：

$ /usr/libexec/java_home /Library/Java/JavaVirtualMachines/jdk1.8.0_91.jdk/Contents/Home

设置JAVA_HOME：

export JAVA_HOME=`/usr/libexec/java_home`

检查JAVA_HOME：

$ echo $JAVA_HOME /Library/Java/JavaVirtualMachines/jdk1.8.0_91.jdk/Contents/Home

如果安装了多个版本的JDK，可以使用-V命令选项列出所有版本的JAVA_HOME：

$ /usr/libexec/java_home -V Matching Java Virtual Machines (1): 1.8.0_91, x86_64: "Java SE 8" /Library/Java/JavaVirtualMachines/jdk1.8.0_91.jdk/Contents/Home /Library/Java/JavaVirtualMachines/jdk1.8.0_91.jdk/Contents/Home