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:
mysql>set character_set_server=utf8;
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
原文链接:http://www.blogjava.net/zhyiwww/archive/2012/03/01/371055.html
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