修改mysql默認(rèn)字符集的兩種方法詳細(xì)解析

2024-07-24 12:48:01

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(1) 最簡單的修改方法，就是修改mysql的my.ini文件中的字符集鍵值，
如 default-character-set = utf8
character_set_server = utf8

修改完后，重啟mysql的服務(wù)，service mysql restart
使用 mysql> SHOW VARIABLES LIKE 'character%';查看，發(fā)現(xiàn)數(shù)據(jù)庫編碼均已改成utf8

復(fù)制代碼代碼如下:

+--------------------------+---------------------------------+
| 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 | D:"mysql-5.0.37"share"charsets" |
+--------------------------+---------------------------------+

(2) 還有一種修改mysql默認(rèn)字符集的方法，就是使用mysql的命令
復(fù)制代碼代碼如下:

mysql> SET character_set_client = utf8 ;
mysql> SET character_set_connection = utf8 ;
mysql> SET character_set_database = utf8 ;
mysql> SET character_set_results = utf8 ;
mysql> SET character_set_server = utf8 ;
mysql> SET collation_connection = utf8 ;
mysql> SET collation_database = utf8 ;
mysql> SET collation_server = utf8 ;

一般就算設(shè)置了表的mysql默認(rèn)字符集為utf8并且通過UTF-8編碼發(fā)送查詢，你會發(fā)現(xiàn)存入數(shù)據(jù)庫的仍然是亂碼。問題就出在這個connection連接層上。解決方法是在發(fā)送查詢前執(zhí)行一下下面這句：
復(fù)制代碼代碼如下:

SET NAMES 'utf8';

它相當(dāng)于下面的三句指令：
復(fù)制代碼代碼如下:

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