ckmike@ckmikePC:~$ mysql

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 2

Server version: 5.7.23-0ubuntu0.18.04.1 (Ubuntu)

Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> use mysql

Reading table information for completion of table and column names

You can turn off this feature to get a quicker startup with -A

Database changed

mysql> update mysql.user set authentication_string=password('账号密码') where user='root';

Query OK, 0 rows affected, 1 warning (0.03 sec)

Rows matched: 3 Changed: 0 Warnings: 1

mysql> update user set plugin="mysql_native_password";

Query OK, 1 row affected (0.00 sec)

Rows matched: 7 Changed: 1 Warnings: 0

mysql> flush privileges;

Query OK, 0 rows affected (0.00 sec)

mysql> quit

Bye

3./etc/mysql/mysql.conf.d/mysqld.cnf文件，去掉skip-grant-tables，开启校验

4.重启服务

sudo service mysql restart;

至此就搞定了，使用jdbc、非Linuxroot账号都可以登录了。