Spring Boot连接MySQL8.0失败的处理方法

今天在使用Spring Boot时遇到了一个问题，连接5.+版本时没有任何问题，但是连接8.0版本时就会出现各种奇怪的报错。先来看看怎么解决吧~

报错情况

Wed Jan 09 16:47:16 CST 2019 WARN: Establishing SSL connection without serve

HikariPool-1 - Exception during pool initialization.
    
java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 30000ms.

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 explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for