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)

时间:2022-06-22 14:22:08
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/ |

+--------------------------+----------------------------+



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)

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;



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)

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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