navicat连接mysql报错1251的解决办法

今天下了个 mysql8.0，发现navicat连接不上，总是报错1251；

原因是mysql8.0版本的方式和mysql5.0的不一样，连接会报错。

试了很多种方法，终于找到一种可以实现的：

　　更改加密方式

1.先通过命令行进入mysql的root账户：

ps c:\windows\system32> mysql -uroot -p

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

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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>

2.更改加密方式：

mysql> alter user 'root'@'localhost' identified by 'password' password expire never;

query ok, 0 rows affected (0.10 sec)

3.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';

query ok, 0 rows affected (0.35 sec)

4.刷新：

mysql> flush privileges;

query ok, 0 rows affected (0.28 sec)

// 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，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)