在MAC上查找和设置$JAVA_HOME
guibin.beijing@gmail.com
最近升级了MAC OS,装了JDK7 for mac,在这里,装完之后发现在默认的路径下找不到JDK7的HOME,如下所示:
-
$ which java
-
/usr/bin/java
-
-
$ ls -l /usr/bin/java
-
lrwxr-xr-x 1 root wheel 74 Jan 4 20:24 /usr/bin/java -> /System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands/java
-
-
$ ls -l /System/Library/Frameworks/JavaVM.framework/Versions
-
total 64
-
lrwxr-xr-x 1 root wheel 10 Jan 4 20:24 1.4 -> CurrentJDK
-
lrwxr-xr-x 1 root wheel 10 Jan 4 20:24 1.4.2 -> CurrentJDK
-
lrwxr-xr-x 1 root wheel 10 Jan 4 20:24 1.5 -> CurrentJDK
-
lrwxr-xr-x 1 root wheel 10 Jan 4 20:24 1.5.0 -> CurrentJDK
-
lrwxr-xr-x 1 root wheel 10 Jan 4 20:24 1.6 -> CurrentJDK
-
lrwxr-xr-x 1 root wheel 10 Jan 4 20:24 1.6.0 -> CurrentJDK
-
drwxr-xr-x 7 root wheel 238 Jan 4 20:25 A
-
lrwxr-xr-x 1 root wheel 1 Jan 4 20:24 Current -> A
-
lrwxr-xr-x 1 root wheel 59 Jan 4 20:24 CurrentJDK -> /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents
可是查看java的版本确实是1.7,如下:
-
$ java -version
-
java version "1.7.0_45"
-
Java(TM) SE Runtime Environment (build 1.7.0_45-b18)
-
Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode)
google了一下,发现了这篇文章Important Java Directories on Mac OS X,可以使用工具命令“/usr/libexec/java_home”来定位JAVA_HOME,这下爽了:
-
$ cat ~/.profile
-
-
JAVA_HOME=`/usr/libexec/java_home`
-
export JAVA_HOME
-
-
$ echo $JAVA_HOME
-
/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home
另外可以使用-V选项列出所有版本的JAVA_HOME:
-
$ /usr/libexec/java_home -V
-
Matching Java Virtual Machines (3):
-
1.7.0_45, x86_64: "Java SE 7" /Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home
-
1.6.0_65-b14-462, x86_64: "Java SE 6" /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
-
1.6.0_65-b14-462, i386: "Java SE 6" /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
-
-
/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home
阅读(639) | 评论(0) | 转发(0) |