springboot在配置Bean的时候，可能会出现这样的错误！！！ 原因是因为相同名字的bean已经存在了。

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APPLICATION FAILED TO START
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Description:

The bean 'interceprot', defined in class path resource [com/example/demo1/doInterceptor.class], could not be registered. A bean with that name has already been defined in file [/Users/sun/Desktop/demo1/target/classes/com/example/demo1/Interceprot.class] and overriding is disabled.

Action:

Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true

要是想配置成功，需要在配置文件中加上这样一段

spring.main.allow-bean-definition-overriding=true

意思是覆盖bean。 这样就好了！！！！