1.登錄mysql，查看數據庫的整體編碼
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/ |
+--------------------------+----------------------------+
其中
character_set_database | latin1
character_set_server | latin1
都爲latin1編碼，所以需要把這兩個字符編碼都修改爲utf8
2.修改數據庫編碼
打開/etc/my.cnf文件