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分类: Mysql/postgreSQL

2010-10-27 11:29:13

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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