关于注解的新认知

java中的注解：

http://www.jasongj.com/2016/01/17/Java1_%E6%B3%A8%E8%A7%A3Annotation/

https://www.jianshu.com/p/e9329c8a59c2

元注解&组合注解

https://www.hifreud.com/2017/06/27/spring-boot-08-composite-annotation/

https://www.cnblogs.com/ludashi/p/6598806.html

http://wemedia.ifeng.com/13639490/wemedia.shtml

https://cloud.tencent.com/developer/article/1018008

https://cn.aliyun.com/jiaocheng/800260.html

https://www.cnblogs.com/MaxElephant/p/8086810.html

https://blog.csdn.net/qq_26525215/article/details/53523970

https://blog.csdn.net/xiaolyuh123/article/details/66968883

java8中新增注解@repeatable

https://yanbin.blog/java8-repeatable-annotations/

https://blog.csdn.net/aitangyong/article/details/54346342