Establishing SSL connection without server's identity verification is not recommended.

当操作MySQL数据库出现以下错误时

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.

翻译

警告：不建议在没有服务器身份验证的情况下建立SSL连接。根据MySQL5.5.45+、5.6.26+和5.7.6+的要求，如果不设置显式选项，则默认必须建立SSL连接。为了符合不使用SSL的现有应用程序，verifyServerCertificate属性设置为“false”。您需要通过设置useSSL=false显式禁用SSL，或者设置useSSL=true并提供用于服务器证书验证的信任库。

解决方法：在url之后加上useSSL = false

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

（复习使用）