修改数据库mysql字符编码为UTF8
Mysql数据库是一个开源的数据库，应用非常广泛。以下是修改mysql数据库的字符编码的操作过程。
步骤1：查看当前的字符编码方法
mysql> show variables like 'character%';
+--------------------------+----------------------------+
| Variable_name | Value |
+--------------------------+----------------------------+
| character_set_client | latin1 |
| character_set_connection | latin1 |
| character_set_database | latin1 |
| character_set_filesystem | binary |
| character_set_results | latin1 |
| character_set_server | latin1 |
| character_set_system | utf8 |
| character_sets_dir | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
8 rows in set (0.00 sec)
字符编码为latin1时，用户在给数据表插入一条字符类型（char）的记录，在显示此记录时可能会无法正常显示字符类型的数据，故此处我们将mysql字符编码修改为UTF8。操作如下：
步骤2：修改my.cnf配置文件，修改后如下：
[client]
#password = your_password
port = 3306
socket = /var/lib/mysql/mysql.sock
default-character-set=utf8 #****设置默认编码为UTF8**
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
default-character-set=utf8
init_connect='SET NAMES utf8'
# Default to using old password format for compatibility with mysql 3.x
# clients (those using the mysqlclient10 compatibility package).
old_passwords=1
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
步骤3，重启mysql数据库。
步骤4，重新连接mysql数据库，并查看mysql的字符编码。
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 | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
8 rows in set (0.00 sec)
以上显示说明已经修改成功
