修改数据库root密码

mysql -u root -p
//输入原密码

GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY '你的密码';
GRANT ALL PRIVILEGES ON *.* TO 'root'@'127.0.0.1' IDENTIFIED BY '你的密码';

FLUSH   PRIVILEGES;    //使配置生效
exit;   //退出