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251--Client does not support authentication protocol requested by server的解決

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

好不容易安裝好mysql,但又出現了mysql客戶端版本太低的問題。根據參考的這篇部落格,完美的解決了該問題。

1、通過命令列進入解壓的mysql根目錄下mysql目錄下的bin資料夾。

如  F:\>cd  mysql-5.7.23\bin

2、登陸資料庫

mysql -uroot -p

3、再輸入root的密碼:

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、更改密碼:該例子中 123為新密碼

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

6、重新整理:

mysql> FLUSH PRIVILEGES;

這步完成後我已經成功解決了問題。如果報錯,可以看下面第7步,博主依然給出瞭解決方案

7、

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

則是遠端訪問許可權不正確,先選擇資料庫,檢視一下再更改:

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)

最後,感謝參考的該博主。此次轉載只希望幫助更多的人,畢竟在犄角旮旯裡找到這個方案不容易。若有人想要轉載,請註明原博主,謝謝。真的非常感謝原博主。