安装完mysql,启动后发现服务器默认使用的是lat1编码.

具体操作和查看过程如下:

启动方式: /etc/init.d/mysql.server start

效果:

Database changed
mysql> status
--------------
mysql  Ver 14.12 Distrib 5.0.77, for redhat-linux-gnu (x86_64) using readline 5.1

Connection id:        8
Current database:    demodb
Current user:        root@localhost
SSL:            Not in use
Current pager:        stdout
Using outfile:        ''
Using delimiter:    ;
Server version:        5.5.21 MySQL Community Server (GPL)
Protocol version:    10
Connection:        Localhost via UNIX socket
Server characterset:    latin1
Db     characterset:    utf8
Client characterset:    latin1
Conn.  characterset:    latin1
UNIX socket:        /var/lib/mysql/mysql.sock
Uptime:            33 sec

Threads: 7  Questions: 137  Slow queries: 0  Opens: 83  Flush tables: 1  Open tables: 76  Queries per second avg: 4.151
--------------

mysql>


启动方式: /etc/init.d/mysql.server start --character-set-server=utf8

效果:
mysql> use demodb;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> status;
--------------
mysql  Ver 14.12 Distrib 5.0.77, for redhat-linux-gnu (x86_64) using readline 5.1

Connection id:        4
Current database:    demodb
Current user:        root@localhost
SSL:            Not in use
Current pager:        stdout
Using outfile:        ''
Using delimiter:    ;
Server version:        5.5.21 MySQL Community Server (GPL)
Protocol version:    10
Connection:        Localhost via UNIX socket
Server characterset:    utf8
Db     characterset:    utf8
Client characterset:    latin1
Conn.  characterset:    latin1
UNIX socket:        /var/lib/mysql/mysql.sock
Uptime:            1 min 15 sec

Threads: 4  Questions: 131  Slow queries: 0  Opens: 84  Flush tables: 1  Open tables: 77  Queries per second avg: 1.746
--------------

mysql>

这种方式,在每次启动的时候都需要指定编码参数.否则服务器就使用的是系统默认的lat1编码.


另外一种方法是:

这种方法我也试了,不行,再重新登录客户端后,就又恢复了原来的编码.理由很简单,系统启动的时候用的不是utf8编码.


一劳永逸的办法,就是通过修改配置文件实现.

# vim /etc/my.cnf

内容如下:
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql

#添加下面的红字内容
character-set-server=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