第一层因素:
mysql的自身的设置
mysql有六处使用了字符集，分别为：client 、connection、database、results、server 、system。
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 | latin1 |
| character_set_system | utf8 |
| character_sets_dir | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
mysql -uroot -p--default_character_set=gbk; (影响数据的输入和输出)
mysql> show variables like 'character%';
+--------------------------+----------------------------+
| Variable_name | Value |
+--------------------------+----------------------------+
| character_set_client | gbk |
| character_set_connection | gbk |
| character_set_database | utf8 |
| character_set_filesystem | binary |
| character_set_results | gbk |
| character_set_server | latin1 |
| character_set_system | utf8 |
| character_sets_dir | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
8 rows in set (0.00 sec)
insertinto worker(id,name,sex,birthday,salary,entry_date,resume) values(3,'赵六',0,'1985-09-21',7000,'2012-08-24','一个小小牛');
====>错误现象
mysql>insert into worker(id,name,sex,birthday,salary,entry_date,resume) values(3,'赵六',0,'1985-09-21',7000,'2012-08-24','一个小小牛');
ERROR 1366 (HY000): Incorrect string value:'\x80\xE4\xB8\xAA\xE5\xB0...' for column 'resume' at row 1
mysql>
====>结论: 让你的客户端 服务器 连接 ,都必须设置成一样 utf8gbk
第二层因素
操作系统语言环境的设置
a)操作系统的总体的语言环境
[mysql01@localhost~]$ cat /etc/sysconfig/i18n
LANG="zh_CN.UTF-8"
[mysql01@localhost~]$
b)当前用户的语言环境 linux的操作系统是基于多用户的操作系统
[mysql01@localhost~]$ env | grep LANG*
LANG=zh_CN.UTF-8
[mysql01@localhost~]$
=====>当前用户的LANG设置能屏蔽操作系统语言环境设置
实现:修改当前用户的语言环境
[mysql01@localhost~]$ env | grep LANG
LANG=C
[mysql01@localhost~]$
insertinto worker(id,name,sex,birthday,salary,entry_date,resume) values(3,'赵六六',0,'1985-09-21',7000,'2012-08-24','一个小牛');
第三层因素
你的应用软件的本身 文件的 存储问题....
文件存储
最常用有2种方式:utf8 code936
==== gbk转宽字节的函数....widewinskd函数 gbk转成宽字节(Unicode2)
备份mysql数据库
$ mysqldump -uroot -p mydb2 > 2.sql
//恢复msql数据库
$ mysqldump -uroot -p mydb2 < 2.sql
