spring boot logback config

[v5tech]

http://coffeesweet.me/2016/08/31/spring-boot日志问题一：去除默认的console输出

https://docs.spring.io/spring-boot/docs/current/reference/html/howto-logging.html

http://www.netkiller.cn/java/spring/boot/logging.html

http://tengj.top/2017/04/05/springboot7

http://www.cnblogs.com/wenbronk/p/6529161.html

https://blog.csdn.net/u013256816/article/details/52755371

http://blog.didispace.com/springbootlog