用这个命令进入mysql
sudo mysql
在sql命令行输入以下命令回车，你就可以把密码改成mynewpassword
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password by 'mynewpassword';
exit回到终端命令行，输入：
sudo mysql_secure_installation
输入刚才的密码即可。
出现的问题都选n.
- authentication 39 significance localhost PASSWORDauthentication 39 significance localhost 39 sqlexception localhost password 39 localhost password access 39 localhost password密码 39 localhost password错误 39 failed mysql_native_password authentication localhost password access denied authentication caching_sha password caching localhost password密码access authentication caching_sha password navicat