Ruby on Rails 敏捷开发最佳实践分享
分享你的敏捷开发最佳实践，为rails社区的枝繁叶茂做出自己的贡献.
设置Mysql数据库的默认编码为utf8
1 次投票mysql的默认编码为latin1，存储中文时总会出现乱码，每次改过了，下次又忘了该怎么配，把它记录下来，也分享给各位。
进入mysql，查看默认编码：
$ mysql -uroot -proot
$ show variables like character%'显示字符编码：
+--------------------------+----------------------------+
| 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 | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+现暂停mysql服务：
$sudo /etc/init.d/mysql stop修改 /etc/mysql/my.cnf
$ sudo chmod 777 /etc/mysql/my.cnf
$ vim /etc/mysql/my.cnf在client下面加上：
default-character-set=utf8在mysqld下面加上：
default-character-set=utf8
init_connect='SET NAMES utf8'保存，退出wq
重启mysql服务：
$sudo /etc/init.d/mysql start发现出错：
Warning: World-writable config file '/etc/mysql/my.cnf' is ignored
/usr/bin/mysqladmin: connect to server at 'localhost' failed
error: 'Access denied for user 'luoping'@'localhost' (using password: NO)'原因为：/etc/mysql/my.cnf 权限太高，搜索了一番，有人说许改为600，但是我发觉不行，查看了/etc/mysql/文件夹里的其他文件，权限是755，所以修改权限
$sudo chmod 755 /etc/mysql/my.cnf重启mysql服务，OK
再次查看数据库编码
$ mysql -uroot -proot
$ show variables like character%'显示字符编码：
+--------------------------+----------------------------+
| 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/ |
+--------------------------+----------------------------+
