在 OSX 上将 shell 从 Bash 更改为 Zsh 时找不到 Java_HOME？
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Java_HOME not found when changed shell from Bash to Zsh on OSX?
提问by piyushdubey
This is weird, I have set JAVA_HOME for my mac which can be found when I am using bash shell, but if I change shell, I get a message saying JAVA_HOME not set. What could be going on here?
这很奇怪，我已经为我的 mac 设置了 JAVA_HOME，当我使用 bash shell 时可以找到它，但是如果我更改 shell，我会收到一条消息，说 JAVA_HOME 未设置。这里会发生什么？
采纳答案by K139
When you set JAVA_HOME in a shell, then it is active and available only for that context, and it will be gone when you close that shell.
当您在 shell 中设置 JAVA_HOME 时，它就处于活动状态并且仅可用于该上下文，并且在您关闭该 shell 时它将消失。
Instead either change global environment (or) your .bashrc to include it. So that every time you start a shell, the variable will be available.
相反，要么更改全局环境（或）您的 .bashrc 以包含它。这样每次启动 shell 时，该变量都将可用。
edit the .profileor .bash_profileto include the JAVA_HOME.
编辑.profile或.bash_profile以包含 JAVA_HOME。
export JAVA_HOME=`/usr/lib....`
and also below command will return the path for java home directory.
并且下面的命令将返回java主目录的路径。
/usr/libexec/java_home -v 1.7
where 1.7 is the version you want.
其中 1.7 是您想要的版本。
回答by pherris
I stumbled upon your question when trying to solve the same issue while migrating from bash to oh-my-zsh. The reason it's not there is that there is no code setting it for zshbut there was for bash. Generally theres something exporting JAVA_HOMEwhenever a new bashwindow is opened so it's always set for you. There is a good thread where this might be happening on the Unix & Linux StackExchange site.
在从 bash 迁移到 oh-my-zsh 的过程中尝试解决相同的问题时，我偶然发现了您的问题。它不存在的原因是没有代码设置它，zsh但是有 for bash。通常，JAVA_HOME每当bash打开新窗口时都会导出一些内容，因此它始终为您设置。在Unix & Linux StackExchange 站点上有一个很好的线程可能会发生这种情况。
To do the same thing in zsh, you can edit the .zshrcwhich is run every time zshstarts. I found a sample.zshrcwhich got me most of the way. The key line being:
要在 中执行相同的操作zsh，您可以编辑.zshrc每次zsh启动时运行的。我找到了一个让我大获全胜的样本.zshrc。关键线是：
export JAVA_HOME=`/usr/libexec/java_home`
Here is the file which I appended to the end of my existing ~/.zshrcfile:
这是我附加到现有~/.zshrc文件末尾的文件：
#zshrc, interactive shell settings
export ZSH=$HOME/.zsh
# emacs integration
[[ $EMACS = t ]] && unsetopt zle
# env
if [[ -e /usr/libexec/java_home ]]; then
export JAVA_HOME=`/usr/libexec/java_home`
fi
if [[ -e /usr/local/lib/node_modules ]]; then
export NODE_PATH=/usr/local/lib/node_modules
fi
# path
export PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/X11/bin
export PATH=/opt/usr/sbin:/opt/sbin:/opt/usr/bin:/opt/bin:$PATH
export PATH=/usr/local/bin:/usr/local/sbin:$PATH
export PATH=$HOME/.cabal/bin:$PATH
export PATH=$HOME/.gem/ruby/1.8/bin:$PATH
export PATH=$JAVA_HOME/bin:$PATH
export PATH=$HOME/.bin:$PATH
setopt null_glob
# source all files in zsh root
for include in $ZSH/*.zsh; do
source $include
done
# source all non-controlled files
for include in $ZSH/private/*.zsh; do
source $include
done
unsetopt null_glob
Then source ~/.zshrcto run in the current shell (or just start a new one) and you should be able to see that it is set with export | grep JAVA_HOME.
然后source ~/.zshrc在当前的 shell 中运行（或者只是启动一个新的），你应该能够看到它设置了export | grep JAVA_HOME.
I also ended up running mkdir ~/.zshto create the directory this is looking for and removing the .cabaland .gemlines as they were not needed for me.
我还最终运行mkdir ~/.zsh以创建正在查找的目录并删除.cabal和.gem行，因为它们对我来说是不需要的。
回答by dmytro Minz
I have just installed Mac OS Catalina Version 10.15 and found that environment variables such as JAVA_HOME and others that have been set in my .bash_profile :
我刚刚安装了 Mac OS Catalina 10.15 版，发现在我的 .bash_profile 中设置了诸如 JAVA_HOME 等环境变量：
export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_231.jdk/Contents/Home
export PATH=$JAVA_HOME/bin:$PATH
export ANDROID_HOME=/Users/mynziak/Library/Android/sdk
export PATH=$PATH:$ANDROID_HOME/tools:$ANDROID_HOME/platform-tools
export M2_HOME=/usr/local/Cellar/maven/3.6.2/libexec
export M2=${M2_HOME}/bin
export PATH=${PATH}:${M2_HOME}/bin
are not set in fact!
实际上没有设置！
I saw %in terminal instead of general $that means you are using a zsh shell instead of bash shell. With Catalina zsh is now the default shell and bash will be completely gone in the future.
我%在终端而不是一般$中看到这意味着您使用的是 zsh shell 而不是 bash shell。Catalina zsh 现在是默认的 shell，而 bash 将在未来完全消失。
oh-my-zsh shell: https://ohmyz.sh/
oh-my-zsh 外壳：https: //ohmyz.sh/
So you have to setup all environment variables in .zshrcfile.
所以你必须在.zshrc文件中设置所有环境变量。
I just copy-pasted every variables from .bash_profilein to .zshrcand re-opened terminal.
我只是将.bash_profile中的每个变量复制粘贴到.zshrc并重新打开终端。
Files .bash_profileand .zshrcare hidden (cmd+shift+. - show hidden files in finder) but can be found in path:
文件 .bash_profile和.zshrc是隐藏的（cmd+shift+. - 在 finder 中显示隐藏文件）但可以在路径中找到：
/Users/mynziak/.zshrc
/用户/mynziak/.zshrc
but use own username!
但使用自己的用户名！
