连接mysql报错
Cannot create PoolableConnectionFactory (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.)
在连接时后面添加?serverTimezone=UTC
jdbc:mysql://localhost:3306/day0101?serverTimezone=UTC