**application.yml** 读的默认配置文件名 就叫application呗 ~~~ #配置user对象,包含name和age两个属性 user: name: tom age: 18 #user2 行内写法 user2: {name: jerry, age: 15} #list | set | 数组 list1: - tom - jerry - jack - rose #list 行内写法 list2: [tom, jerry, jack, rose] ~~~