MySql5.X和8.XJDBC连接区别

8.x

#数据库连接配置
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.url=jdbc:mysql://localhost:3306/databases?useUnicode=true&characterEncoding=utf8&useSSL=false&zeroDateTimeBehavior=convertToNull&autoReconnect=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=GMT%2B8
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver

5.x

#数据库连接配置
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.url=jdbc:mysql://localhost:3306/databases
spring.datasource.driver-class-name=com.mysql.jdbc.Driver

区别：

5.x 驱动com.mysql.jdbc.Driver

8.x 驱动com.mysql.cj.jdbc.Driver

8.x 需要增加时区的配置serverTimezone=UTC