

D:\>cd D:\Program Files\mysql-8.0.12-winx64\binmysql -u root -palter user 'root'@'%' IDENTIFIED BY 'root';或者alter user 'root'@'localhost' IDENTIFIED BY '123'; 一定要注意最后有分号;alter user 'root'@'localhost' IDENTIFIED BY '123';flush privileges;,刷新以下权限,就可以了flush privileges;