连接MySQL报错：Establishing SSL connection without server's identity verification is not recommended.

报错信息：

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：不建议在没有服务器身份验证的情况下建立SSL连接。根据MySQL 5.5.45+，如果未设置显式选项，则默认情况下必须建立5.6.26+和5.7.6+要求的SSL连接。对于不使用SSL的现有应用程序，ValuyServer证书属性设置为“false”。您需要通过设置useSSL=false来显式禁用SSL，或者设置useSSL=true并提供用于服务器证书验证的信任库。

解决办法：

1、在数据库连接的url中添加useSSL=false;

2、在数据库连接的url中添加useSSL=true，并且提供服务器验证证书。