spring boot 配置文件，單個文件多環境配置
spring:
profiles:
active: dev
---
#開發環境配置
spring:
profiles: dev
server:
port: 1000
---
#測試環境配置
spring:
profiles: stg
server:
port: 1001
---
#生產環境配置
spring:
profiles: prd
server:
port: 1002
多個yml文件
application.yml
spring:
profiles:
active: dev
application-dev.yml
server:
port: 1000
application-prd.yml
server:
port: 1002