0.先查看编码：
show variables like '%character%';
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/
1.关闭mysql：
sudo service mysql stop
2.修改权限：
sudo chmod 666 /etc/mysql/my.cnf
改动：[client]
default-character-set=utf8
[mysqld]
character-set-server=utf8
[mysql]
default-character-set=utf8
保存！！
3.修改后重新赋予权限
sudo chmod 644 /etc/mysql/my.cnf
4.重启：
sudo service mysql start
5.进入mysql后输入
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/ |
+--------------------------+----------------------------+
(没有实践过)另外一种方法:
