1.背景
linux中mysql8默认的字符集是latin1，在插入中文时会报错，所以一般在配置好mysql时需要修改字符集为utf8【又叫utfmb3,一般开发够用，一个字符用3个字节表示】或者utfmb4【一个字符用4个字节表示，如果存储emoji表情，必须用utfmb4】
1366 - Incorrect string value: xE4 xBA xBA(xE7 x94 x9F’ for column ‘book name’ at row 1
查看当前数据库的字符集
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)发现默认是latin1
2. 修改字符串为utf8
- 修改
/etc/my.cnf配置文件 - 重启
mysql - 重新查看字符集
2.1 修改/etc/my.cnf配置文件
[root@VM-4-6-centos /]# cd etc
[root@VM-4-6-centos etc]# vim my.cnf
进入到编辑页面
保存并退出
2.2 重启mysql
systemctl restart mysqld.service2.3 重新查看字符集
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)大功告成！！！
