Unknown initial character set index ‘255‘ received from server. Initial client character 解決方法

問題描述：

java.sql.SQLException: Unknown initial character set index '255' received from server. 
Initial client character set can be forced via the 'characterEncoding' property.
           

原因分析：

MySQL驅動和資料庫字元集設定不搭配

解決方案：

添加

?useUnicode=true&characterEncoding=utf8

"jdbc:mysql:///maven02?useUnicode=true&characterEncoding=utf8","使用者名","密碼")          
           

成功解決