1、找到my.cnf配置文件
如果/etc/目录下没有my.cnf配置文件,请到/usr/share/mysql/下找到*.cnf文件,拷贝其中一个到/etc/并改名为my.cnf)中。命令如下:
[root@test1 mysql]# cp /usr/share/mysql/my-medium.cnf /etc/my.cnf
mysql5.5.10默认字符集修改,字符编码设置,中文乱码,gb2312,gbk,utf8格式存储数据
通过修改mysql默认字符集,可以存储中文数据,以免出现中文乱码,以下以设置为utf8为例。
=================================================================================
以下内容是在本机安装的mysql-5.5.10上,没有修改my.ini前显示结果
===================================================================================
mysql> show variables like 'character%';
+--------------------------+---------------------------------+
|
Variable_name
|
Value
|
+--------------------------+---------------------------------+
| character_set_client |
gbk
|
| character_set_connection |
gbk
|
| character_set_database |
latin1
|
| 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 (0.02 sec)
mysql> show variables like 'collation%';
+----------------------+-------------------+
| Variable_name |
Value
|
+----------------------+-------------------+
| collation_connection | gbk_chinese_ci |
| collation_database | latin1_swedish_ci |
| collation_server | latin1_swedish_ci
|
+----------------------+-------------------+
3 rows in set (0.00 sec)
==============================================================================
关闭mysql服务,在mysql安装目录下,my.ini文件进行如下修改,没有则直接进行添加
==============================================================================
[client]
#修改客户端默认字符编码格式为utf8
default-character-set=utf8
[mysqld]
#修改服务器端默认字符编码格式为utf8
character-set-server = utf8
=============================================================================
修改后,再次输入命令查看,显示结果如下
==============================================================================
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 |
utf8
|
| character_set_system |
utf8
|
| character_sets_dir |
/usr/share/mysql/charsets/ |
+--------------------------+---------------------------------+
8 rows in set (0.00 sec)
mysql> show variables like 'collation%';
+----------------------+-----------------+
| Variable_name |
Value
|
+----------------------+-----------------+
| collation_connection | utf8_general_ci |
| collation_database | utf8_general_ci |
| collation_server | utf8_general_ci |
+----------------------+-----------------+
3 rows in set (0.00 sec)
================================================================================
查看mysql已经安装的所有字符集,也就是在mysql中可以使用的字符集,结果如下
================================================================================
mysql> show character set;
+----------+-----------------------------+---------------------+--------+
| Charset |
Description
| Default collation | Maxlen |
+----------+-----------------------------+---------------------+--------+
| big5 | Big5 Traditional
Chinese | big5_chinese_ci
| 2 |
| dec8 | DEC West
European
| dec8_swedish_ci
| 1 |
| cp850 | DOS West
European
| cp850_general_ci
| 1 |
| hp8 | HP West
European
| hp8_english_ci
| 1 |
| koi8r | KOI8-R Relcom
Russian |
koi8r_general_ci |
1 |
| latin1 | cp1252 West
European |
latin1_swedish_ci | 1
|
| latin2 | ISO 8859-2 Central European |
latin2_general_ci | 1
|
| swe7 | 7bit
Swedish
| swe7_swedish_ci
| 1 |
| ascii | US
ASCII
| ascii_general_ci
| 1 |
| ujis | EUC-JP
Japanese
| ujis_japanese_ci
| 3 |
| sjis | Shift-JIS
Japanese |
sjis_japanese_ci |
2 |
| hebrew | ISO 8859-8
Hebrew
| hebrew_general_ci | 1
|
| tis620 | TIS620
Thai
| tis620_thai_ci
| 1 |
| euckr | EUC-KR
Korean
| euckr_korean_ci
| 2 |
| koi8u | KOI8-U
Ukrainian
| koi8u_general_ci
| 1 |
| gb2312 | GB2312 Simplified Chinese |
gb2312_chinese_ci | 2
|
| greek | ISO 8859-7
Greek
| greek_general_ci
| 1 |
| cp1250 | Windows Central European |
cp1250_general_ci | 1
|
| gbk | GBK Simplified
Chinese |
gbk_chinese_ci
| 2 |
| latin5 | ISO 8859-9
Turkish |
latin5_turkish_ci | 1
|
| armscii8 | ARMSCII-8
Armenian |
armscii8_general_ci | 1 |
| utf8 | UTF-8
Unicode
| utf8_general_ci
| 3 |
| ucs2 | UCS-2
Unicode
| ucs2_general_ci
| 2 |
| cp866 | DOS
Russian
| cp866_general_ci
| 1 |
| keybcs2 | DOS Kamenicky Czech-Slovak |
keybcs2_general_ci | 1 |
| macce | Mac Central
European |
macce_general_ci |
1 |
| macroman | Mac West
European
| macroman_general_ci | 1 |
| cp852 | DOS Central
European |
cp852_general_ci |
1 |
| latin7 | ISO 8859-13
Baltic |
latin7_general_ci | 1
|
| utf8mb4 | UTF-8
Unicode
| utf8mb4_general_ci | 4 |
| cp1251 | Windows
Cyrillic
| cp1251_general_ci | 1
|
| utf16 | UTF-16
Unicode
| utf16_general_ci
| 4 |
| cp1256 | Windows
Arabic
| cp1256_general_ci | 1
|
| cp1257 | Windows
Baltic
| cp1257_general_ci | 1
|
| utf32 | UTF-32
Unicode
| utf32_general_ci
| 4 |
| binary | Binary pseudo
charset |
binary
| 1 |
| geostd8 | GEOSTD8
Georgian
| geostd8_general_ci | 1 |
| cp932 | SJIS for Windows Japanese |
cp932_japanese_ci | 2
|
| eucjpms | UJIS for Windows Japanese |
eucjpms_japanese_ci | 3 |
+----------+-----------------------------+---------------------+--------+
39 rows in set (0.00 sec)
经过所有以上设置以后,mysql中所有字符集都是utf8的了,但是在控制台操作的时候,还是会出现乱码中文乱码。
这是因为windows XP的控制台窗口默认显示字符编码格式为gbk,所以这里要设置显示结果使用的字符编码格式为utf8。
每次在控制台进行操作的时候,都要进行如下这个设置,结果才能正常显示中文
===============================================================================
mysql> set character_set_results='gbk';
Query OK, 0 rows affected (0.00 sec)
===============================================================================
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:
===============================================================================
mysql> set names gbk;
Query OK, 0 rows affected (0.00 sec)
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;
因此,这个方法也可以解决所有字符编码设置为utf8,而控制台显示中文乱码的问题。
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