考试之前由于一直在做团队项目导致疏忽了数据库
等到今天来连接做考试的时候发现报错:1251
网上的解释以及解决方法:
今天下了个 MySQL8.0,发现Navicat连接不上,总是报错1251;
原因是MySQL8.0版本的加密方式和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:
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PS C:\Windows\system32> mysql -uroot -p |
再输入root的密码:
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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> |
2.更改加密方式:
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mysql> ALTER USER 'root' @ 'localhost' IDENTIFIED BY 'password' PASSWORD EXPIRE NEVER;
Query OK, 0 rows affected (0.10 sec)
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3.更改密码:该例子中 123为新密码
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mysql> ALTER USER 'root' @ 'localhost' IDENTIFIED WITH mysql_native_password BY '123' ;
Query OK, 0 rows affected (0.35 sec)
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4.刷新:
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mysql> FLUSH PRIVILEGES ;
Query OK, 0 rows affected (0.28 sec)
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// 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:
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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)
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连接数据库失败的原因有很多
版本更新带来的内置问题
密码更改的问题
初次连接也有可能是 Path环境没配置好 或者防火墙抵制等等
在这里推荐老师的一篇博客 :用老师的话来说,都是干货
https://www.cnblogs.com/best/p/6517755.html