在url中添加：
...?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=UTC&rewriteBatchedStatements=true
感谢：https://blog.csdn.net/qq892628217/article/details/89715969
IDEA报Could not get JDBC Connection; nested exception is java.sql.SQLException: The server time zone value '?й???????' is unrecognized or represents more than one time zone.
原文：https://www.cnblogs.com/zjazn/p/14119771.html
