Brew已安装的Java无法与系统java文件夹进行符号链接

Question

我使用Homebrew在我的Java11 mbp上运行命令安装了M1

brew search java

brew install java11

它安装了java版本。当我跑的时候

brew info java

我明白了

openjdk: stable 17.0.1 (bottled) [keg-only]
Development kit for the Java programming language
https://openjdk.java.net/
Not installed
From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/openjdk.rb
License: GPL-2.0-only with Classpath-exception-2.0
==> Dependencies
Build: autoconf ✔
==> Caveats
For the system Java wrappers to find this JDK, symlink it with
  sudo ln -sfn /opt/homebrew/opt/openjdk/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk.jdk

openjdk is keg-only, which means it was not symlinked into /opt/homebrew,
because macOS provides similar software and installing this software in
parallel can cause all kinds of trouble.

==> Analytics
install: 229,799 (30 days), 652,569 (90 days), 2,040,179 (365 days)
install-on-request: 64,996 (30 days), 187,761 (90 days), 591,813 (365 days)
build-error: 5,513 (30 days)

我根据警告运行sudo命令，但我不知道它是否做了什么。当我跑的时候

Java --version

我明白了

The operation couldn’t be completed. Unable to locate a Java Runtime.
Please visit http://www.java.com for information on installing Java.

我不明白为什么会这样。以前我已经启动并运行了Java，但是我必须格式化并安装一个新的操作系统副本，现在当我再次尝试安装Java时，我遇到了这个问题。我假设Homebrew安装位置之间的符号链接不是与系统java位置的链接，但我可能错了。

Answer 1

我也遇到了同样的问题，但是当我运行brew info java时，它给了我几个运行步骤：

sudo ln -sfn /Users/${whoami}/homebrew/opt/openjdk/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk.jdk

export PATH="/home/${whoami}/homebrew/opt/openjdk/bin:$PATH"

java -version 
# This should work
# To make the export permanent
echo 'export PATH="/Users/${whoami}/homebrew/opt/openjdk/bin:$PATH"' >> ~/.zshrc 

假设${whoami} (您的用户名与主文件夹相同)。否则，将变量替换为实际文件夹名。

而且，看起来你想要java11，很可能在~/homebrew/opt/下面

你可以搜索它：

find ~/homebrew/ -name '*openjdk*'

在本例中，您将找到一个类似于openjdk@11的文件，它在~/homebrew/opt/openjdk@11中，您可以导出：

export PATH="/home/${whoami}/homebrew/opt/openjdk@11/bin:$PATH"

而不是

export PATH="/home/${whoami}/homebrew/opt/openjdk/bin:$PATH"