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

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

從錯誤的提示信息中發現字符集設置出現問題

 

 

mysql連接數據庫時報此錯誤：

//String url = "jdbc:mysql://localhost:3306/db_cjky" 如果使用這句就會報錯。
//Unknown initial character set index '255' received from server. Initial client character set can be forced via the 'characterEncoding' property.
String url = "jdbc:mysql://localhost:3306/db_cjky?useUnicode=true&characterEncoding=utf8";//改成這句，就可以了
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原文鏈接：https://blog.csdn.net/txwtech/article/details/80787886