Linux下修改MySQL的字符集编码为UTF8

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MySQL安装后的默认字符集如果不是UTF8,可能会有中文乱码等情况发生,只需修改字符集编码为UTF8即可解决。

一、查看默认编码

mysql> SHOW VARIABLES LIKE 'character%';
+--------------------------+----------------------------+
| Variable_name            | Value                      |
+--------------------------+----------------------------+
| character_set_client     | utf8                       |
| character_set_connection | utf8                       |
| character_set_database   | latin1                     |
| character_set_filesystem | binary                     |
| character_set_results    | utf8                       |
| character_set_server     | latin1                     |
| character_set_system     | utf8                       |
| character_sets_dir       | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
8 rows in set (0.00 sec)

可以看到,character_set_databasecharacter_set_server的默认字符集是latin1

二、最佳修改方法

修改mysqlmy.cnf配置文件

(1)[client]节点

[client]
...
default-character-set=utf8

(2)[mysqld]节点

[mysqld]
...
character-set-server=utf8

(3)[mysql]节点

[mysql]
...
default-character-set=utf8

(4)注意mysqld节点和另外两个节点的属性名称不同,注意区分!

三、测试效果

配置文件修改后重启mysql服务生效。

重启服务后查看效果:

mysql> SHOW VARIABLES LIKE 'character%';
+--------------------------+----------------------------+
| Variable_name            | Value                      |
+--------------------------+----------------------------+
| character_set_client     | utf8                       |
| character_set_connection | utf8                       |
| character_set_database   | utf8                       |
| character_set_filesystem | binary                     |
| character_set_results    | utf8                       |
| character_set_server     | utf8                       |
| character_set_system     | utf8                       |
| character_sets_dir       | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
8 rows in set (0.00 sec)

四、补充说明

如果还有乱码,可以试试以下方法。

[mysqld]
...
character-set-server = utf8
init-connect         = 'SET NAMES utf8'

效果相当于:

SET character_set_client     = utf8;
SET character_set_results    = utf8;
SET character_set_connection = utf8;

一般经过以上配置,可解决所有的编码问题了,还有问题的可留言。


本文链接:https://www.cary.tech/article/574.html

原文链接:https://blog.xinac.cn/archives/mysql-utf8.html


 

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