SunAug 1917:39:12 CST 2018 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 verifyServer Certificate 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.
Exception in thread "main" java.sql.SQLException: The server time zone value '???ú±ê×??±??' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver(via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone support. [译文如下] java.sql.SQLException :服务器时区值 '??±××?±?' 是不被识别的,或者表示一个以上的时区.如果要利用时区支持,必须配置服务器或JDBC驱动程序(通过 serverTimezone 配置属性)使用更具体的时区值.