1.eclipse 連 mysql數據庫出現錯誤：nknown initial character set index '255' received from server. Initial client character set can be forced via the 'characterEncoding' property.

解決方法：String url = "jdbc:mysql://localhost:3306/jdbcStudy?useUnicode=true&characterEncoding=utf8";

2.訪問報錯com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Client does not support authentication protocol requested by server; consider upgrading MySQL client

解決方法：

執行語句修改

mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '66666';

Query OK, 0 rows affected (0.11 sec)mysql> FLUSH PRIVILEGES;

Query OK, 0 rows affected (0.01 sec)

注意：root是用戶名，localhost是特指本機，mysql_native_password是舊的密碼驗證機制，66666是密碼

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