解决：Establishing SSL connection without server‘s identity verification is not recommended警告

自从升级了数据库版本到8.0后，经常会在数据库连接时报错，根据日志来看

Mon Jul 11 15:13:05 CST 2022 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.

即 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 +，5.6.26 +和5.7.6 +要求，如果未设置显式选项，则必须默认建立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 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。

我原本的url设置如下

dataSource.setJdbcUrl("jdbc:mysql://localhost: