一.mysql ssl 链接验证警告

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.

从警告信息可知：为了兼容以前版本的mysql 链接可以在url中使用useSSL=false禁止ssl方式连接如下:

 jdbc:mysql://localhost:3306/db_test?useSSL=false