Pycharm连接Mysql8.0
1.错误：[S1009] The connection property 'zeroDateTimeBehavior' acceptable values are: 'CONVERT_TO_NULL','EXCEPTION' or 'ROUND'.The value 'convertToNull' is not acceptable.
修改方式：
zeroDateTimeBehavior=convertToNull改为zeroDateTimeBehavior=CONVERT_TO_NULL
2.错误 ：[08001] Could not create connection to database server. Attempted reconnect 3 times. Giving up.
修改：
1.检查user和password是否有错
2.检查连接池是否正确
3.试试将URL改成这个：jdbc:mysql://localhost:3306/dbname?useSSL=false&serverTimezone=UTC