Description:
The bean xxx.FeignClientSpecification', defined in null, could not be registered. A bean with that name has already been defined in null and overriding is disabled.
Action:
Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true
解決辦法：
Feign的注冊，有同名的feign的名字重復注冊，相同的name也就是跨服務調用，同一個服務的接口，不能分散的寫在多個接口類中，要放到同一個借口類中定義調用。