Navicat连接mysql 1251--Client does not support authentication protocol requested by server的解决

参考自：

https://blog.csdn.net/qq_42152399/article/details/80360817

https://blog.csdn.net/XDMFC/article/details/80263215

2、登陆数据库

mysql -uroot -p

3、再输入root的密码：

1. Enter password: ******

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

3. Your MySQL connection id is 18

4. Server version: 8.0.11 MySQL Community Server - GPL

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

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

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7. affiliates. Other names may be trademarks of their respective

8. owners.

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

10. mysql>

4、更改加密方式：

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'password' PASSWORD EXPIRE NEVER;

5、更改密码：该例子中 123为新密码

mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '123';

6、刷新：

mysql> FLUSH PRIVILEGES;

这步完成后我已经成功解决了问题。如果报错，可以看下面第7步，博主依然给出了解决方案

7、

// 如果报错ERROR 1396 (HY000): Operation ALTER USER failed for 'root'@'%'：

则是远程访问权限不正确，先选择数据库，查看一下再更改：

?

mysql> use mysql;
Database changed
mysql> select user,host from user;
+------------------+-----------+
| user             | host      |
+------------------+-----------+
| mysql.infoschema | localhost |
| mysql.session    | localhost |
| mysql.sys        | localhost |
| root             | localhost |
+------------------+-----------+
5 rows in set (0.00 sec)