有關springboot 2.0 遇到的一些升級問題

1.問題描述：

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APPLICATION FAILED TO START

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Description:

The bean ‘${childdream.service.name}.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

今天遇到這個問題，其實解釋已經很清楚，就是我在項目中被定義爲這樣名稱${childdream.service.name}的bean出現多次。
解決方案：
只需要在application.properties中添加：
spring.main.allow-bean-definition-overriding=true