Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException

 错误信息提示：

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.********.qrcode.redis.RedisUtil' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

分析： No qualifying bean of type 'com.********.qrcode.redis.RedisUtil' 说明没有找到这个bean,所以就要考虑spring是否扫描到了的问题：

解决方法：在spring配置文件添加包扫描