如下图
解决办法:
在URL后面添加参数即可：
?useUnicode=true&characterEncoding=UTF-8&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC
解决idea连接mysql连接失败Could not create connection to database server. Attempted reconnect 3 times. Giving up.
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