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  • 【转贴】Linux下MySQL 5.5的修改字符集编码为UTF8(彻底解决中文乱码问题)

    原文地址; http://www.ha97.com/5359.html

    PS:昨天一同事遇到mysql 5.5中文乱码问题,找我解决。解决了,有个细节问题网上没人说,我就总结一下。

    一、登录MySQL查看用SHOW VARIABLES LIKE ‘character%’;下字符集,显示如下:

    +--------------------------+----------------------------+
    | Variable_name | Value |
    +--------------------------+----------------------------+
    | character_set_client | utf8 |
    | character_set_connection | utf8 |
    | character_set_database | latin1 |
    | character_set_filesystem | binary |
    | character_set_results | utf8 |
    | character_set_server | latin1 |
    | character_set_system | utf8 |
    | character_sets_dir | /usr/share/mysql/charsets/ |
    +--------------------------+----------------------------+

    character_set_database和character_set_server的默认字符集还是latin1。

    二、最简单的完美修改方法,修改mysql的my.cnf文件中的字符集键值(注意配置的字段细节):

    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。

    使用SHOW VARIABLES LIKE ‘character%’;查看,发现数据库编码全已改成utf8。

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


    4、如果上面的都修改了还乱码,那剩下问题就一定在connection连接层上。解决方法是在发送查询前执行一下下面这句(直接写在SQL文件的最前面):
    SET NAMES ‘utf8′;

    它相当于下面的三句指令:

    SET character_set_client = utf8;
    SET character_set_results = utf8;
    SET character_set_connection = utf8;


    网上很多其他方法不能彻底解决这个问题,这个可以完美解决!

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  • 原文地址:https://www.cnblogs.com/AloneSword/p/2981804.html
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