由於mysql版本過高創建連接的時候會出現如下報告
解決辦法：在mysql連接上加上&useSSL=true
如下：jdbc:mysql:///:3366:test?useUnicode=true&characterEncoding=utf-8&useSSL=true
ssl是一種加密技術在客戶端連接數據庫的中間做了加密，TCP/IP層中。
Tue May 16 09:08:59 CST 2017 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.