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 tothe MySQL monitor. Commands endwith; or\g.
Your MySQL connectionid is18
Server version: 8.0.11 MySQL Community Server - GPLCopyright (c) 2000, 2018, Oracle and/orits affiliates. Allrights reserved.
Oracle isa registered trademark ofOracle Corporation and/orits
affiliates. Other names may be trademarks oftheir respective
owners.Type 'help;'or'\h'forhelp. Type '\c'toclear the currentinput statement.
mysql> |
2.更改加密方式：
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mysql> ALTERUSER'root'@'localhost'IDENTIFIED BY'password'PASSWORDEXPIRE NEVER;
Query OK, 0 rowsaffected (0.10 sec)
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3.更改密码：
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mysql> ALTERUSER'root'@'localhost'IDENTIFIED WITHmysql_native_password BY'password';
Query OK, 0 rowsaffected (0.35 sec)
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4.刷新：
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mysql> FLUSH PRIVILEGES;
Query OK, 0 rowsaffected (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> selectuser,host fromuser;
+------------------+-----------+
| user | host |
+------------------+-----------+
| mysql.infoschema | localhost || mysql.session | localhost || mysql.sys | localhost || root | localhost |+------------------+-----------+
5 rowsinset(0.00 sec)
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