启动mysql后，以root登录mysql
$mysql -u root -p
>show variables like 'character%'; #执行编码显示
+--------------------------+----------------------------+
| Variable_name | Value |
+--------------------------+----------------------------+
| character_set_client | latin1 |
| character_set_connection | latin1 |
| character_set_database | latin1 |
| character_set_filesystem | binary |
| character_set_results | latin1 |
| character_set_server | latin1 |
| character_set_system | utf8 |
| character_sets_dir | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
在某些时候，我们续要修改mysql默认
数据库的编码，以保证某些迁移的程序可以正常显示，编辑my.cnf文件进行编码修改,windows可以直接用Ｍysql Server Instance Config Wizard 进行设置
在linux下修改３个my.cnf的１个/etc/mysql/my.cnf文件
找到客户端配置[client] 在下面添加
default-character-set=utf8 默认字符集为utf8
在找到[mysqld] 添加
default-character-set=utf8 默认字符集为utf8
init_connect='SET NAMES utf8' （设定连接my
sql数据库时使用utf8编码，以让
mysql数据库为utf8运行）
修改好后，重新启动mysql 即可，查询一下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/ |
+--------------------------+----------------------------+
此方法用于标准mysql版本同样有效，对于/etc/my.cnf文件，需要从mysql/support-files的文件夹cp my-large.cnf一份到/etc/my.cnf
摘自 怪蜀黍的博客
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