异常信息：
The server time zone value 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.
异常原因：
新特性；
mySQL6的版本特性。
解决方法：
connectionURL后面需要加上
&serverTimezone=GMT%2B8
The server time zone value is unrecognized or repr
原文：http://blog.51cto.com/13508140/2093538