install Homebrew and gradle

homebrew: 

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

gradle:

 brew install gradle                

配置环境：

https://www.youtube.com/watch?v=hYCf8HhpaSM (start from 2:17,这个视频记载了这个笔记的全部内容；核心内容从2分17开始)

https://start.spring.io/

命令行：

find . (展示所有文件包含点)

unzip demo.zip(解压)

gradle tasks

gradle build

gradle bootjar

cd build

cd libs

java -jar demo-0.0.1-SNAPSHOT.jar