linux下的mysql乱码问题

1，承接上一随笔，因为我用的是rmp的两种反式。

rpm -ivh MySQL-server-4.0.14-0.i386.rpm

rpm -ivh MySQL-client-4.0.14-0.i386.rpm

我发现在我的linux下/etc/目录下面没有我my.cnf文件。这听说是我用了这种方式安装mysql的问题

于是：

[root@iZ945sgm0ugZ etc]# cp /usr/share/mysql/my-medium.cnf /etc/my.cnf

并在my.cnf的[client]下加了一行default-character-set=utf8

[client]
#password       = your_password
default-character-set=utf8
port            =
socket          = /var/lib/mysql/mysql.sock

且我还在［mysqld］下面加character-set-server=utf8

[mysqld]
character-set-server=utf8

重新启动：

[root@iZ945sgm0ugZ etc]# /etc/init.d/mysql stop
Shutting down MySQL...                                     [  OK  ]
[root@iZ945sgm0ugZ etc]# /etc/init.d/mysql start
Starting MySQL..                                           [  OK  ]

乱码问题解决，ok

2，通过mysql的sql指令来设置

1，开启mysql服务，

2，输入指令，查看当前编码

mysql> show variables like 'collation_%';
+----------------------+-------------------+
| Variable_name        | Value             |
+----------------------+-------------------+
| collation_connection | utf8_general_ci   |
| collation_database   | latin1_swedish_ci |
| collation_server     | latin1_swedish_ci |
+----------------------+-------------------+
3 rows in set (0.00 sec)

mysql> show variables like 'character_set_%';
+--------------------------+----------------------------+
| Variable_name            | Value                      |
+--------------------------+----------------------------+
| character_set_client     | utf8                       |
| character_set_connection | utf8                       |
| character_set_database   | latin1                     |
| character_set_filesystem | binary                     |
| character_set_results    | utf8                       |
| character_set_server     | latin1                     |
| character_set_system     | utf8                       |
| character_sets_dir       | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
8 rows in set (0.00 sec)

mysql>  set character_set_database=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_server=utf8;
Query OK, 0 rows affected (0.00 sec)

mysql> set character_set_client=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_connection=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_database=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_results=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_server=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_system=utf8;
Query OK, 0 rows affected (0.01 sec)

最终需要设置为：

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)

mysql> show variables like 'character_set_%';
+--------------------------+----------------------------+
| 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)

摘自：http://chen106106.iteye.com/blog/1639179