1，mysql数据库连接超过8小时失效的解决方案（springboot）
https://blog.csdn.net/u012859681/article/details/62051509
2，spring boot mysql 8小时连接超时
https://blog.csdn.net/u013378306/article/details/78085366
3，详解SpringBoot配置连接池
https://www.jb51.net/article/111531.htm
