Linux 修改MySQL编码格式

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经过本人多次试验，绝对可行的。。。。

登录MySQL,执行编码显示:

show variables like 'character%';

1、查找MySQL的cnf文件的位置
find / -iname '*.cnf' -print

/usr/share/mysql/my-innodb-heavy-4G.cnf
/usr/share/mysql/my-large.cnf
/usr/share/mysql/my-small.cnf
/usr/share/mysql/my-medium.cnf
/usr/share/mysql/my-huge.cnf
/usr/share/texmf/web2c/texmf.cnf
/usr/share/texmf/web2c/mktex.cnf
/usr/share/texmf/web2c/fmtutil.cnf
/usr/share/texmf/tex/xmltex/xmltexfmtutil.cnf
/usr/share/texmf/tex/jadetex/jadefmtutil.cnf
/usr/share/doc/MySQL-server-community-5.1.22/my-innodb-heavy-4G.cnf
/usr/share/doc/MySQL-server-community-5.1.22/my-large.cnf
/usr/share/doc/MySQL-server-community-5.1.22/my-small.cnf
/usr/share/doc/MySQL-server-community-5.1.22/my-medium.cnf
/usr/share/doc/MySQL-server-community-5.1.22/my-huge.cnf

2、拷贝 small.cnf、my-medium.cnf、my-huge.cnf、my-innodb-heavy-4G.cnf其中的一个到/etc下，命名为my.cnf
cp /usr/share/mysql/my-medium.cnf /etc/my.cnf

3、修改my.cnf

vi /etc/my.cnf

1、在[client]字段里加入default-character-set=utf8，如下：


[client] 
port = 3306 
socket = /var/lib/mysql/mysql.sock 
default-character-set=utf8

2、在[mysqld]字段里加入character-set-server=utf8，如下：


[mysqld] 
port = 3306 
socket = /var/lib/mysql/mysql.sock 
character-set-server=utf8

3、在[mysql]字段里加入default-character-set=utf8，如下：


[mysql] 
no-auto-rehash 
default-character-set=utf8

修改完成后，service mysql restart重启mysql服务就生效。注意：[mysqld]字段与[mysql]字段是有区别的。这点在网上没人反馈过。

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/ |
+--------------------------+----------------------------+

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