mysql存储emoji表情报错问题

​​emoji​​表情使用mysql的默认字符设置UTF-8会报错：

Error: ER_TRUNCATED_WRONG_VALUE_FOR_FIELD: Incorrect string value: '\xE6\x88\x91\xE4\xBB\xAC...' for column 'xx' at row 1

这种原因是字符集编码导致的。

1、验证字符集

首先进入mysql：

mysql  -u root -p

进入之后输入以下：

show variables like '%character%';

这里是输入命令之后的视图：

mysql> show variables like '%character%';
+--------------------------+--------------------------------------------------------+
| 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     | utf8mb3                                                |
| character_sets_dir       | /usr/local/mysql-8.0.29-macos12-x86_64/share/charsets/ |
+--------------------------+--------------------------------------------------------+
8 rows in set (0.01 sec)

2、进入my.cnf

vim /etc/my.cnf

编辑my.cnf

[client]

default-character-set=utf8mb4

[mysqld]

character-set-client-handshake = FALSE

character-set-server = utf8mb4

collation-server = utf8mb4_unicode_ci

init_connect='SET NAMES utf8mb4'

skip-character-set-client-handshake = true

[mysql]

default-character-set = utf8mb4

重启数据库服务即可正常存储表情符号，当前版本是: mysql Ver 8.0.29 for macos12 on x86_64 (MySQL Community Server - GPL)