修改mysql字符集(乱码解决方案)
1. 修改my.cnf
vi /etc/my.cnf
在[client]下添加
default-character-set=utf8
在[mysqld]下添加
default-character-set=utf8

2.查看字符集设置
mysql> show variables like 'character_set_%';
+--------------------------+----------------------------+
| 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/ |
+--------------------------+----------------------------+

通过MySQL命令行修改:
mysql> set character_set_client=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_connection=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_database=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_results=utf8;

3. 修改数据库的字符集
    mysql>use mydb
   mysql>alter database mydb character set utf-8;


4. 重启mysql
mysqladmin shutdown
mysqld_safe --user=mysql &