MYSQL设置utf8mb4编码

前言：

      因为爬虫，需要存储emoji表情字符，必须要将mysql的字符集为utf8mb4，且MYSQL版本要大于5.5.3

将Mysql的编码从utf8转换成utf8mb4。

1、修改 my.cnf

加入如下代码段:

[client]
 default-character-set = utf8mb4
 
[mysql]
 default-character-set = utf8mb4
 
[mysqld]
 character-set-client-handshake = FALSE
 character-set-server = utf8mb4
 collation-server = utf8mb4_unicode_ci
 init_connect='SET NAMES utf8mb4'

2、重启 MySQL

3、查看服务器字符集设置

SHOW VARIABLES WHERE Variable_name LIKE 'character%' OR Variable_name LIKE 'collation%';

   结果如下，修改成功！

+--------------------------+--------------------+
| Variable_name      | Value       |
+--------------------------+--------------------+
| character_set_client   | utf8mb4      |
| character_set_connection | utf8mb4      |
| character_set_database  | utf8mb4      |
| character_set_filesystem | binary       |
| character_set_results  | utf8mb4      |
| character_set_server   | utf8mb4      |
| character_set_system   | utf8        |
| collation_connection   | utf8mb4_unicode_ci |
| collation_database    | utf8mb4_unicode_ci |
| collation_server     | utf8mb4_unicode_ci |
+--------------------------+--------------------+