查看mysql数据库编码：
show variables like 'character%';
mysql> show variables like 'character%';+--------------------------+-------------------------------------------------+| Variable_name | Value |+--------------------------+-------------------------------------------------+| character_set_client | gbk || character_set_connection | gbk || character_set_database | latin1 || character_set_filesystem | binary || character_set_results | gbk || character_set_server | latin1 || character_set_system | utf8 || character_sets_dir | E:\0Develop\mysql-5.7.15-winx64\share\charsets\ |+--------------------------+-------------------------------------------------+8 rows in set, 1 warning (0.00 sec)mysql>
可以看出database和server都采用了latin1编码，不支持中文，我们需要把它修改为utf-8。
除了这两个，其它的如下：
| 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 | E:\0Develop\mysql-5.7.15-winx64\share\charsets\
在mysql安装目录下，将 my-default.ini 复制一分保存为 my.ini 做如下修改：
主要看红色框里的内容：
[mysqld]character-set-server=utf8 collation-server=utf8_general_ci [mysql]default-character-set = utf8[mysql.server]default-character-set = utf8[mysqld_safe]default-character-set = utf8[client]default-character-set = utf8
结果，查看编码：
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 | E:\0Develop\mysql-5.7.15-winx64\share\charsets\ |+--------------------------+-------------------------------------------------+8 rows in set, 1 warning (0.00 sec)mysql>
数据库实例编码设置：
mysql> show create database test;+----------+-----------------------------------------------------------------+| Database | Create Database |+----------+-----------------------------------------------------------------+| test | CREATE DATABASE `test` /*!40100 DEFAULT CHARACTER SET latin1 */ |+----------+-----------------------------------------------------------------+1 row in set (0.00 sec)mysql> alter database test default character set utf8;Query OK, 1 row affected (0.00 sec)mysql> show create database test;+----------+---------------------------------------------------------------+| Database | Create Database |+----------+---------------------------------------------------------------+| test | CREATE DATABASE `test` /*!40100 DEFAULT CHARACTER SET utf8 */ |+----------+---------------------------------------------------------------+1 row in set (0.00 sec)mysql>
参考：http://blog.csdn.net/u013474104/article/details/52486880