目前我们在PHP中使用以下命令在应用程序中将字符集设置为UTF-8。
因为这有点开销，所以我们希望将其设置为MySQL中的默认设置。我们可以在/etc/my.cnf或其他位置这样做吗?
SET NAMES 'utf8'
SET CHARACTER SET utf8
我在/etc/my.cnf中寻找了一个默认字符集，但那里没有关于字符集的任何内容。
在这一点上，我做了以下设置MySQL字符集和排序变量为UTF-8:
skip-character-set-client-handshake
character_set_client=utf8
character_set_server=utf8
这是正确的处理方式吗?
当前回答
在Fedora 21上
$ vi /etc/my.cnf
添加:
[client]
default-character-set=utf8
[mysql]
default-character-set=utf8
[mysqld]
init_connect='SET collation_connection = utf8_unicode_ci'
init_connect='SET NAMES utf8'
character-set-server=utf8
collation-server=utf8_unicode_ci
skip-character-set-client-handshake
保存并退出。
最后记住，用service mysqld restart重启服务mysqld。
其他回答
在MySQL 5.5中，我有my.cnf
[mysqld]
init_connect='SET collation_connection = utf8_unicode_ci'
init_connect='SET NAMES utf8'
character-set-server=utf8
collation-server=utf8_unicode_ci
skip-character-set-client-handshake
结果是
mysql> show variables like "%character%";show variables like "%collation%";
+--------------------------+----------------------------+
| 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)
+----------------------+-----------------+
| Variable_name | Value |
+----------------------+-----------------+
| collation_connection | utf8_unicode_ci |
| collation_database | utf8_unicode_ci |
| collation_server | utf8_unicode_ci |
+----------------------+-----------------+
3 rows in set (0.00 sec)
注意: My.cnf文件位于/etc/mysql/
在添加这些行之后:
[mysqld]
collation-server = utf8_unicode_ci
init-connect='SET NAMES utf8'
character-set-server = utf8
skip-character-set-client-handshake
[client]
default-character-set = utf8
[mysql]
default-character-set = utf8
不要忘记重启服务器:
sudo service mysql restart
MySQL v5.5.3及更高版本:
只在[mysqld]部分中添加三行:
[mysqld]
character-set-server = utf8
collation-server = utf8_unicode_ci
skip-character-set-client-handshake
注意:在这里包含skip-character-set-client-handshake可以避免在[mysqld]中包含init-connect，在[client]和[mysql]部分中包含default-character-set。
《NijaCat》也很接近，但却过于夸张:
要将默认值设置为UTF-8，您需要将以下内容添加到my.cnf
[client]
default-character-set=utf8
[mysqld]
default-character-set = utf8
然后，验证:
mysql> show variables like "%character%";show variables like "%collation%";
+--------------------------+----------------------------+
| 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)
+----------------------+-----------------+
| 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)
对于MySQL的最新版本，
default-character-set = utf8
造成问题。我认为这是不可取的。
正如Justin Ball在“升级到MySQL 5.5.12，现在MySQL无法启动，你应该:
Remove that directive and you should be good. Then your configuration file ('/etc/my.cnf' for example) should look like that: [mysqld] collation-server = utf8_unicode_ci init-connect='SET NAMES utf8' character-set-server = utf8 Restart MySQL. For making sure, your MySQL is UTF-8, run the following queries in your MySQL prompt: First query: mysql> show variables like 'char%'; The output should look like: +--------------------------+---------------------------------+ | 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/local/mysql/share/charsets/| +--------------------------+---------------------------------+ Second query: mysql> show variables like 'collation%'; And the query output is: +----------------------+-----------------+ | Variable_name | Value | +----------------------+-----------------+ | collation_connection | utf8_general_ci | | collation_database | utf8_unicode_ci | | collation_server | utf8_unicode_ci | +----------------------+-----------------+
