mysql下的字符设置

默认登录mysql之后show variables like ‘%character%’, 出现
  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/ |
  +--------------------------+----------------------------+
  1. 找到mysql的配置文件,拷贝到etc目录下,第一步很重要
  使用find命令查找cnf文件。记得不要去找my.cnf因为它不一定存在,而应该找*.cnf。
  [root@linuxserver classes] find / -iname *.cnf -print
  /usr/share/doc/mysql-server-4.1.12/my-medium.cnf
  /usr/share/doc/mysql-server-4.1.12/my-huge.cnf
  /usr/share/doc/mysql-server-4.1.12/my-innodb-heavy-4G.cnf
  /usr/share/doc/mysql-server-4.1.12/my-large.cnf
  /usr/share/doc/mysql-server-4.1.12/my-small.cnf
  /usr/share/texmf/web2c/mktex.cnf
  /usr/share/texmf/web2c/texmf.cnf
  /usr/share/texmf/web2c/fmtutil.cnf
  /usr/share/texmf/tex/jadetex/jadefmtutil.cnf
  /usr/share/ssl/openssl.cnf
  找到之后,复制一个出来
  cp /usr/share/doc/mysql-server-4.1.12/my-large.cnf /etc/my.cnf
  2. 打开my.cnf修改编码
  vi /etc/my.cnf
  在[client]下增加default-character-set=utf8
  在[mysqld]下增加default-character-set=utf8
  同时加上init_connect=‘SET NAMES utf8’ (设定连接mysql数据库时使用utf8编码,以让mysql数据库为utf8运行)
  重新启动mysql,执行:sudo /etc/init.d/mysql stop 然后sudo /etc/init.d/mysql start
  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/ |
  +--------------------------+----------------------------+
  即使做了以上修改如果直接数据库再创建表,然后存入中文,取出来的会是问号。解决的办法是:
  创建数据库的时候指明默认字符集为utf8,如:
  create database test default character set utf8;

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