java.sql.SQLException Unknown initial character set index 45 received from server. Initial client

java.sql.SQLException: Unknown initial character set index ‘45’ received from server. Initial client character set can be forced via the ‘characterEncoding’ property.

問題出現原因大多數使用了MySQL5.5的其他一些版本，java項目的部分jar包連接就會出現問題。比如今天看到出問題的就是 MySQL5.5 MariaDB

解決辦法：

官方下載MySQL數據庫，MySQL Community Server的版本，建議5.7版本，或者8.x版本

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