1.查看默认字符集(默认情况下,mysql的字符集是latin1(ISO_8859_1)通常,查看系统的字符集和排序方式的设定可以通过下面的两条命令: mysql> SHOW VARIABLES LIKE 'character%';
+--------------------------+---------------------------------+
Variable_name Value
+--------------------------+---------------------------------+
character_set_client latin1
character_set_connection latin1
character_set_database latin1
character_set_filesystem binary
character_set_results latin1
character_set_server latin1
character_set_system utf8
character_sets_dir D:"mysql-5.0.37"share"charsets"
+--------------------------+---------------------------------+
mysql> SHOW VARIABLES LIKE 'collation_%';
+----------------------+-----------------+
Variable_name Value
+----------------------+-----------------+
collation_connection utf8_general_ci
collation_database utf8_general_ci
collation_server utf8_general_ci
+----------------------+-----------------+
2.修改默认字符集
(1) 最简单的修改方法,就是修改mysql的my.ini文件中的字符集键值,
如 default-character-set = utf8
character_set_server = utf8
修改完后,重启mysql的服务,service mysql restart
使用 mysql> SHOW VARIABLES LIKE 'character%';查看,发现数据库编码均已改成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 D:"mysql-5.0.37"share"charsets"
+--------------------------+---------------------------------+
(2) 还有一种修改字符集的方法,就是使用mysql的命令
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 ;
一般就算设置了表的默认字符集为utf8并且通过UTF-8编码发送查询,你会发现存入数据库的仍然是乱码。问题就出在这个connection连接层上。解决方法是在发送查询前执行一下下面这句:
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;
--转自