Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.

这是因为更换了最新的MySQL驱动:

之前的是：

jdbc.driverClass   = com.mysql.dbc.Driver
jdbc.url      = jdbc:mysql://127.0.0.1:3306/db?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT
jdbc.username = root
jdbc.password = 789987

现在的改成了这样：

按照最新官方提示支持将com.mysql.jdbc.Driver  改为  com.mysql.cj.jdbc.Driver

jdbc.driverClass   = com.mysql.cj.jdbc.Driver
jdbc.url      = jdbc:mysql://127.0.0.1:3306/db?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT
jdbc.username = root
jdbc.password = 789987