问Spring Boot项目出现依赖注入异常应该怎么解决？

提问于 2024-03-11 11:15:01

回答 0关注 0查看 61

Description:

Field am in wow.service.AdminServiceImpl required a bean of type 'wow.mapper.AdminMapper' that could not be found.

The injection point has the following annotations:

- @org.springframework.beans.factory.annotation.Autowired(required=true)

Action:

Consider defining a bean of type 'wow.mapper.AdminMapper' in your configuration.

Process finished with exit code 1

代码：

@Mapper
public interface AdminMapper {

    @Select("select user_count from t_usercount")
    Integer getUserCount();
    
}

@Service
@Transactional(propagation=Propagation.REQUIRED, isolation=Isolation.DEFAULT)
public class AdminServiceImpl implements AdminService {

    @Autowired
    private AdminMapper am;

    @Override
    @Transactional(readOnly=true)
    public BackJSON getUserCount() {
        BackJSON json = new BackJSON(200);
        String count = "{\"count\":"+am.getUserCount()+"}";
        json.setData(JSONObject.parse(count));
        return json;
    }

}

spring