1,檢查預設安裝的mysql的字符集

mysql> show variables like '%char%';
+--------------------------+--------------------------------------------------------+
| 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/local/mysql-5.5.23-osx10.6-x86_64/share/charsets/ |
+--------------------------+--------------------------------------------------------+
8 rows in set (0.00 sec)

character_set_database和character_set_server依然是latin1的字符集，也就是說mysql後續建立的表都是latin1字符集的，不是utf8，會造成一些麻煩。所以有必要修改my.cnf，在修改my.cnf之前一定要關閉mysql程序，不然會遇到mysql的sock不能連線的問題。

2，關閉mysqld後臺程序

系統偏好設定裡面控制mysqld，避免了去找mysqld安裝位置的麻煩。

點選 Stop MySQL Server

3，修改mysql配置檔案/etc/my.cnf

sudo cp /usr/local/mysql/support-files/my-medium.cnf /etc/my.cnf

sudo vi /etc/my.cnf

[client]部分加入：

default-character-set=utf8

[mysqld]部分加入：

character-set-server=utf8

修改完畢之後再啟動mysql

4，檢查結果：

mysql> show variables like '%char%';
+--------------------------+--------------------------------------------------------+
| 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/local/mysql-5.5.23-osx10.6-x86_64/share/charsets/ |
+--------------------------+--------------------------------------------------------+
8 rows in set (0.00 sec)

修改完畢＃