brew install jenv
mac brew 快速配置看这里 https://gitee.com/cunkai/HomebrewCN
也可直接从 github 拉取
git clone https://github.com/jenv/jenv.git ~/.jenv
查看shell是 zsh还是bash
echo $0
mac 默认是 zsh
echo 'export PATH="$HOME/.jenv/bin:$PATH"' >> ~/.zshrc
echo 'eval "$(jenv init -)"' >> ~/.zshrc
echo 'export PATH="$HOME/.jenv/bin:$PATH"' >> ~/.bash_profile
echo 'eval "$(jenv init -)"' >> ~/.bash_profile
aaron@AarondeMacBook-Pro ~ % jenv doctor
[OK] No JAVA_HOME set
[ERROR] Java binary in path is not in the jenv shims.
[ERROR] Please check your path, or try using /path/to/java/home is not a valid path to java installation.
PATH : /opt/homebrew/Cellar/jenv/0.5.4/libexec/libexec:/Users/aaron/.jenv/shims:/Users/aaron/.jenv/bin:/opt/homebrew/bin:/opt/homebrew/sbin:/Library/Frameworks/Python.framework/Versions/3.10/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Applications/VMware Fusion Tech Preview.app/Contents/Public:/Library/Apple/usr/bin
[OK] Jenv is correctly loaded
注意:如果出现
[ERROR] JAVA_HOME variable already set, scripts that use it directly could not use java version set by jenv
[ERROR] Java binary in path is not in the jenv shims.
[ERROR] Please check your path, or try using /path/to/java/home is not a valid path to java installation.
需要检查两个地方的配置
正常输出结果
aaron@AarondeMacBook-Pro /Library/Java/JavaVirtualMachines/jdk-18.0.1.1.jdk/Contents/Home jenv doctor
[OK] JAVA_HOME variable probably set by jenv PROMPT
[OK] Java binaries in path are jenv shims
[OK] Jenv is correctly loaded
/usr/libexec/java_home -V
aaron@AarondeMacBook-Pro / % /usr/libexec/java_home -V
Matching Java Virtual Machines (5):
17.0.2 (arm64) "Oracle Corporation" - "Java SE 17.0.2" /Library/Java/JavaVirtualMachines/jdk-17.0.2.jdk/Contents/Home
11.0.14 (x86_64) "Oracle Corporation" - "Java SE 11.0.14" /Library/Java/JavaVirtualMachines/jdk-11.0.14.jdk/Contents/Home
1.8.321.07 (x86_64) "Oracle Corporation" - "Java" /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home
1.8.0_322 (arm64) "Azul Systems, Inc." - "Zulu 8.60.0.21" /Library/Java/JavaVirtualMachines/zulu-8.jdk/Contents/Home
1.8.0_321 (x86_64) "Oracle Corporation" - "Java SE 8" /Library/Java/JavaVirtualMachines/jdk1.8.0_321.jdk/Contents/Home
/Library/Java/JavaVirtualMachines/jdk-17.0.2.jdk/Contents/Home
通过 jenv add 命令就可以把需要管理的 JDK 添加到 jenv
jenv add /Library/Java/JavaVirtualMachines/jdk-17.0.2.jdk/Contents/Home
添加新版本时,每个版本都会一次性自动加入多个不同版本,有些就是简称而已,其实都指向同一个版本,这里便于区分,可以将简略版本删除
jenv remove 17
jenv versions
aaron@AarondeMacBook-Pro / % jenv versions
* system (set by /Users/aaron/.jenv/version)
1.8
1.8.0.322
17
17.0
17.0.2
oracle64-17.0.2
zulu64-1.8.0.322
system 即 jenv global 指定
jenv local 1.8
若提示没有权限 使用 sudo 即可
注意:慎用此命令,此命令会在当前目录下生成名为 .java-version 的隐藏文件
jenv global oracle64-17.0.2
ps: global 不会覆盖已经使用了 jenv local 指定了 JDK 版本的命令行窗口
vim ~/.zshrc 或者 vim ~/.bash_profile
alias jdk8_intel='jenv global openjdk64-1.8.0.292'
alias jdk8='jenv global zulu64-1.8.0.322'
alias jdk17='jenv global oracle64-17.0.2'
alias jdk18='jenv global oracle64-18.0.1.1'
效果
aaron@AarondeMacBook-Pro ~ jdk8
aaron@AarondeMacBook-Pro ~ java -version
openjdk version "1.8.0_322"
OpenJDK Runtime Environment (Zulu 8.60.0.21-CA-macos-aarch64) (build 1.8.0_322-b06)
OpenJDK 64-Bit Server VM (Zulu 8.60.0.21-CA-macos-aarch64) (build 25.322-b06, mixed mode)
jenv which java
aaron@AarondeMacBook-Pro versions % jenv which java
/Users/aaron/.jenv/versions/1.8/bin/java
/Users/aaron/.jenv/versions 目录,所有的 jdk 版本都在这里,这里只是引用地址
通过 ls -l 可以看到实际的安装目录
aaron@AarondeMacBook-Pro versions % ls -l
total 0
lrwxr-xr-x 1 aaron staff 58 5 28 20:33 1.8 -> /Library/Java/JavaVirtualMachines/zulu-8.jdk/Contents/Home
lrwxr-xr-x 1 aaron staff 62 5 28 20:26 17.0 -> /Library/Java/JavaVirtualMachines/jdk-17.0.2.jdk/Contents/Home
lrwxr-xr-x 1 aaron staff 62 5 28 20:26 oracle64-17.0.2 -> /Library/Java/JavaVirtualMachines/jdk-17.0.2.jdk/Contents/Home
lrwxr-xr-x 1 aaron staff 58 5 28 20:33 zulu64-1.8.0.322 -> /Library/Java/JavaVirtualMachines/zulu-8.jdk/Contents/Home
安装目录统一在 /Library/Java/JavaVirtualMachines/