Spring boot 启动提示：
Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if expl
解决方法：
加入两个参数，如下
spring.datasource.url=jdbc:mysql://localhost:3306/testDemo?autoReconnect=true&useSSL=false
虽千万人，吾往矣！
