homebrew 安装 OpenJDK

使用 homebrew-openjdk 安装 AdoptOpenJDK

安装 JDK

shell

brew tap AdoptOpenJDK/openjdk
brew cask install adoptopenjdk11

在国内由于 github 访问速度，可能会出现安装（下载）失败的情况：

log

curl: (18) transfer closed with 100324834 bytes remaining to read
Error: Download failed on Cask 'adoptopenjdk11' with message: Download failed: https://github.com/AdoptOpenJDK/openjdk11-binaries/releases/download/jdk-11.0.8%2B10/OpenJDK11U-jdk_x64_mac_hotspot_11.0.8_10.pkg

解决方法：

加速 OpenJDK 下载

使用清华镜像站加速获取 pkg 包

修改 /usr/local/Homebrew/Library/Taps/adoptopenjdk/homebrew-openjdk/Casks/adoptopenjdk11.rb 中 url 地址为国内源

示例：

adoptopenjdk11.rb

# PLEASE DO NOT EDIT THIS FILE. EDIT Templates/adoptopenjdk.rb.tmpl
cask "adoptopenjdk11" do
  version "11.0.8,10"
  sha256 "c9ce3e78a7ec7f8c23041af63a66bfe18bbf75c7bfa8f8a51148a098f3653699"

  # github.com/AdoptOpenJDK was verified as official when first introduced to the cask
  # url "https://github.com/AdoptOpenJDK/openjdk11-binaries/releases/download/jdk-11.0.8%2B10/OpenJDK11U-jdk_x64_mac_hotspot_11.0.8_10.pkg"
  # 使用清华镜像站加速
  url "https://mirrors.tuna.tsinghua.edu.cn/AdoptOpenJDK/11/jdk/x64/mac/OpenJDK11U-jdk_x64_mac_hotspot_11.0.8_10.pkg"
  appcast "https://github.com/AdoptOpenJDK/openjdk#{version.major}-binaries/releases/latest"
  name "AdoptOpenJDK 11"
  homepage "https://adoptopenjdk.net/"

  pkg "OpenJDK11U-jdk_x64_mac_hotspot_11.0.8_10.pkg"

  postflight do
    system_command "/usr/sbin/pkgutil", args: ["--pkg-info", "net.adoptopenjdk.11.jdk"], print_stdout: true
  end

  uninstall pkgutil: "net.adoptopenjdk.11.jdk"
end

保存后再次执行命令安装即可

shell

brew cask install adoptopenjdk11

多版本 JDK 切换

1. 按照 homebrew-openjdk 文档中描述，在 ~/.bashrc 或 ~/.zshrc 中添加如下内容：

   ~/.zshrc

   jdk() {
       version=$1
       export JAVA_HOME=$(/usr/libexec/java_home -v"$version");
       java -version
   }

2. 加载配置

   shell

   source ~/.zshrc

3. 选择已安装的 JDK 版本

# 选择 OpenJDK 1.8
jdk 1.8
# 选择 OpenJDK 11
jdk 11