解决java连接mysql警告:Establishing SSL connection without server‘s identity verification is not recommend.

完整报错：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.

将：

String url = "jdbc:mysql://127.0.0.1:3306/数据库名";

改为：

String url = "jdbc:mysql://127.0.0.1:3306/数据库名?useSSL=false";