[Solved] SpringBoot Project Startup Error: Field userMapper in com.demo.controller.MemberController required a bean of type ‘c

Error:
SpringBoot Project Startup Error: ‘com.xxx.mapper.XxxxMapper’ that could not be found

*************************** APPLICATION FAILED TO START


Description:
Field userMapper in com.demo.controller.MemberController required a
bean of type ‘com.demo.mapper.UserMapper’ that could not be found.
Action:
Consider defining a bean of type ‘com.demo.mapper.UserMapper’ in your
configuration.
Process finished with exit code 1

Reason: Cound not scan to find the mapper

Solution: Add @MapperScan("com.demo.mapper") in startup


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