required a bean of type …… that could not be found.

报错如下：

Field mesScalesOrderItemService in ……ServiceImpl required a bean of type ……ItemService' that could not be found.

The injection point has the following annotations:
    - @org.springframework.beans.factory.annotation.Autowired(required=true)

发现是  ServiceImpl 漏写了  @Service 

如下图：