springboot报错：The server time zon

转载自：https://www.cnblogs.com/bobofei/p/9958054.html
记录下问题：
mysql默认服务器时区问题:
修改

jdbc:mysql://localhost:3306/testuseUnicode=true&characterEncoding=utf-8

为

jdbc:mysql://localhost:3306/testserverTimezone=GMT%2B8&useUnicode=true&characterEncoding=utf-8