apt-get install 安裝的，不是源碼包安裝的mysql

1 修改mysql的配置文件

/etc/mysql/conf.d/mysql.cnf

在[mysql]的下方加入如下語句:(注：這個文件下沒有配置，只有【mysql】)

no-auto-rehash
default-character-set=utf8

/etc/mysql/mysql.conf.d/mysqld.cnf

在[mysqld]下加入

socket = /var/run/mysqld/mysqld.sock
port = 3306
character-set-server=utf8 （這里是server，之前有的版本是set）

重啟mysql: sudo /etc/init.d/mysql restart

查看字符集

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/share/mysql/charsets/ |
+--------------------------+----------------------------+
8 rows in set (0.00 sec)

 設置之后如果之前的數據庫已經創建了，只能刪除重新創建了。

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