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Navicat 连接 MySQL 8.0.1 版本出现 1251–Client does not support authentication protocol requested by server 的解决
好不容易安装好 mysql，但又出现了 mysql 客户端版本太低的问题。根据参考的这篇教程，完美的解决了该问题。
1、通过命令行进入解压的 mysql 根目录下。
2、登陆数据库
mysql -uroot -p
3、再输入 root 的密码：
Enter password: ******
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 18
Server version: 8.0.11 MySQL Community Server - GPL
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>
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)
：
正文完
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