A component required a bean of type 'com.example...' that could not be found解决办法

Project started error
A component required a bean of type ' com.example ...' that could not be found

 

Solution one:
1, and then start scanning packet mapper class to add annotations to
@MapperScan ( "com.example.firstspringboot.dao")

Solution two:
Add @mapper notes on each mapper interfaces

 

Reprinted from: https://blog.csdn.net/qq_34206683/article/details/86179789