MySQL集錦

• 登錄命令：mysql -u root -padmin;
• 查看系統變量：show variables like '%dir%';
• java異常：No suitable driver found for jdbc:mysql://localhost:3306/test?characterEncoding=UTF-8檢查項目運行時需要的庫中是否包含了mysql的jdbc驅動jar包
  
  InvalidConnectionAttributeException: The server time zone value在配置jdbc的url時，添加時區參數：jdbc:mysql://localhost:3306/how2java?characterEncoding=UTF-8&serverTimezone=UTC