Establishing SSL connection without server identity verification is not recommended

报错

SpringBoot启动时报错：

Wed Jun 17 10:13:14 CST 2020 WARN: 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 server certificate verification.

解决

在连接串后面加上useSSL=false
jdbc:mysql://localhost:3306/test?useSSL=false