版本選型:
https://start.spring.io/actuator/info
springcloud學習參考版本:
https://cloud.spring.io/spring-cloud-static/Hoxton.SR1/reference/htmlsingle/
spring cloud 中文文檔
springboot學習參考版本:
https://docs.spring.io/spring-boot/docs/2.2.2.RELEASE/reference/htmlsingle/
springcloud 組件升級