1、检查默认安装的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 |

# For advice on how to change settings please see

| character_set_results | utf8 |

| character_set_server | latin1 |

| character_set_system | utf8 |

| character_sets_dir | /usr/local/mysql-5.6.40-macos10.13-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，也就是说mysql后续创建的表都是latin1字符集的，不是utf8，会造成一些麻烦。所以有必要修改my.cnf。

在修改my.cnf之前一定要关闭mysql进程，不然会遇到mysql的sock不能连接的问题。

2、关闭mysqld后台进程

系统偏好设置里面控制mysqld，避免了去找mysqld安装位置的麻烦。

点击 Stop MySQL Server

3、修改mysql配置文件/etc/my.cnf

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

sudo vim /etc/my.cnf

[client]部分加入：

default-character-set=utf8

[mysqld]部分加入：

character-set-server=utf8

修改完成之后，启动MySQL

4、检查结果

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-5.6.40-macos10.13-x86_64/share/charsets/ |

+--------------------------+-----------------------------------------------------------+

8 rows in set (0.00 sec)