由于mysql版本过高创建连接的时候会出现如下报告
解决办法：在mysql连接上加上&useSSL=true
如下：jdbc:mysql:///:3366:test?useUnicode=true&characterEncoding=utf-8&useSSL=true
ssl是一种加密技术在客户端连接数据库的中间做了加密，TCP/IP层中。
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.