第一層因素:

???????? mysql的自身的設置

???????? mysql有六處使用了字符集，分別為：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; (影響數(shù)據(jù)的輸入和輸出)

????????

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,'趙六',0,'1985-09-21',7000,'2012-08-24','一個小小牛');

????????

====>錯誤現(xiàn)象??????

???????? mysql>insert into worker(id,name,sex,birthday,salary,entry_date,resume) values(3,'趙六',0,'1985-09-21',7000,'2012-08-24','一個小小牛');

ERROR 1366 (HY000): Incorrect string value:'\x80\xE4\xB8\xAA\xE5\xB0...' for column 'resume' at row 1

mysql>

?

====>結論: 讓你的客戶端 服務器 連接 ,都必須設置成一樣 utf8gbk

?

?

第二層因素

???????? 操作系統(tǒng)語言環(huán)境的設置

??????????????????????????? a)操作系統(tǒng)的總體的語言環(huán)境

???????????????????????????????????? [mysql01@localhost~]$ cat /etc/sysconfig/i18n

???????????????????????????????????????????????????????????????? LANG="zh_CN.UTF-8"

???????????????????????????????????????????????????????????????? [mysql01@localhost~]$

??????????????????????????? b)當前用戶的語言環(huán)境? linux的操作系統(tǒng)是基于多用戶的操作系統(tǒng)

???????????????????????????????????????????????????????????????? [mysql01@localhost~]$ env | grep LANG*

???????????????????????????????????????????????????????????????? LANG=zh_CN.UTF-8

???????????????????????????????????????????????????????????????? [mysql01@localhost~]$

????????????????????????????????????????????????????????????????

?????????????????????????????????????????????? =====>當前用戶的LANG設置能屏蔽操作系統(tǒng)語言環(huán)境設置??????????????????????????????????????

????????????????????????????????????????????????????????????????

??????????????????????????? 實現(xiàn):修改當前用戶的語言環(huán)境

??????????????????????????????????????????????????????? [mysql01@localhost~]$ env | grep LANG

??????????????????????????????????????????????????????? LANG=C

??????????????????????????????????????????????????????? [mysql01@localhost~]$ ???????????????????????????????????

???????????????????????????????????????????????????????

???????????????????????????????????? insertinto worker(id,name,sex,birthday,salary,entry_date,resume) values(3,'趙六六',0,'1985-09-21',7000,'2012-08-24','一個小牛');?????????????????

???????????????????????????????????????????????????????

????????

第三層因素

???????? 你的應用軟件的本身 文件的 存儲問題....

????????

???????? 文件存儲

?????????????????? 最常用有2種方式:utf8? code936?

????????

?????????????????? ====? gbk轉寬字節(jié)的函數(shù)....widewinskd函數(shù)? gbk轉成寬字節(jié)(Unicode2)

????????

備份mysql數(shù)據(jù)庫

$ mysqldump -uroot -p mydb2 >? 2.sql

?

//恢復msql數(shù)據(jù)庫

$ mysqldump -uroot -p mydb2 < 2.sql

總結

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