springboot配置文件

yaml：

1.kv之间要有空格，形如：k: v

2.要严格的对齐(同一类下的属性要对齐）

3.value加单引号不转义，加双引号转义

4.数组的格式如下：

4.1Map<String, Object> score

score: {english: 80,math: 90}

4.2Set<Double> salarys

salarys:
  - 9999.98
  - 9999.99

4.3Map<String, List<Pet>> allPets的形式为

allPets:

  sick:
    - {name: cat,weight: 99.99}
    - name: dog
      weight: 88.88
    - name: s
      weight: 77.77
  health:
    - {name: cat,weight: 99.99}
    - name: dog
      weight: 88.88
    - name: s
      weight: 77.77

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