实现123.com全部重定向 （跳转）到www.123.com。同时按照google的建议，使用服务器端 301 重定向，为了确保用户及搜索引擎定向至正确网页的最佳方法。301 状态代码表示某网页已被永久迁移至新位置。下面将了解一下apache下实现301永久性重定向2个方法，需要具有访问服务器的 .htaccess 文件的权限。
1. Apache模块 mod_alias的 Redirect 和 RedirectMatch命令
上面提到2个命令使用方法相似。而区别就是后者RedirectMatch基于正则表达式匹配对当前的URL发送一个外部重定向语法为：
Redirect ［status］ URL-path URL
RedirectMatch ［status］ regex URL
status参数可以使用以下HTTP状态码：
permanent
返回一个永久性重定向状态码（301），表示此资源的位置变动是永久性的。
temp
返回一个临时性重定向状态码（302），这是默认值。
seeother
返回一个“参见”状态码（303），表示此资源已经被替代。
gone
返回一个“已废弃”状态码（410），表示此资源已经被永久性地删除了。如果指定了这个状态码，则URL参数将被忽略。
举例：
APACHE
Redirect 301 /old/old.htm http://www.123.com/new.htm
Redirect permanent /one http://123.com/two
RedirectMatch 301 (.*).gif$ http://www.123.com/images/$1.jpg
2.使用mod_rewrite重写URL方式
APACHE
Options +FollowSymLinks
RewriteEngine on
RewriteCond %{HTTP_HOST} ^123.com
RewriteRule ^(.*)$ http://www.123.com/$1 [R=permanent,L]
在这里判断当前服务器变量HTTP_HOST是否等于1230.com，为真就进行重写，按照R=permanent进行永久重定向，L表示并立即停止重写操作，并不再应用其他重写规则
下面是apache最终实现的.htaccess文件，同时也并入ecshop重写规则。
// ################################################
<FilesMatch "\.(bak|inc|lib|sh|tpl|lbi|dwt)$">
order deny,allow
deny from all
</FilesMatch>
<IfModule mod_rewrite.c>
RewriteEngine On
#RewriteBase /
#Redirect
Options +FollowSymLinks
RewriteCond %{HTTP_HOST} ^123.com$
RewriteCond %{HTTP_HOST} !^$
RewriteRule ^(.*)$ http://www.123.com/$1 [R=301,L]
# direct one-word access
RewriteRule ^index\.html$ index\.php [L]
RewriteRule ^temai\.html$ temai\.php [L]
RewriteRule ^pinpai\.html$ index\.php [L]
RewriteRule ^category$ index\.php [L]
# access any object by its numeric identifier
RewriteRule ^feed-c([0-9]+)\.xml$ feed\.php\?cat=$1 [L]
RewriteRule ^feed-b([0-9]+)\.xml$ feed\.php\?brand=$1 [L]
RewriteRule ^feed-type([^-]+)\.xml$ feed\.php\?type=$1 [L]
RewriteRule ^feed\.xml$ feed\.php [L]
RewriteRule ^category-([0-9]+)-b([0-9]+)-min([0-9]+)-max([0-9]+)-attr([^-]*)-([0-9]+)-(.+)-([a-zA-Z]+)(.*)\.html$ category\.php\?id=$1&brand=$2&price_min=$3&price_max=$4&filter_attr=$5&page=$6&sort=$7&order=$8 [QSA,L]
RewriteRule ^category-([0-9]+)-b([0-9]+)-min([0-9]+)-max([0-9]+)-attr([^-]*)(.*)\.html$ category\.php\?id=$1&brand=$2&price_min=$3&price_max=$4&filter_attr=$5 [QSA,L]
RewriteRule ^category-([0-9]+)-b([0-9]+)-([0-9]+)-(.+)-([a-zA-Z]+)(.*)\.html$ category\.php\?id=$1&brand=$2&page=$3&sort=$4&order=$5 [QSA,L]
RewriteRule ^category-([0-9]+)-b([0-9]+)-([0-9]+)(.*)\.html$ category\.php\?id=$1&brand=$2&page=$3 [QSA,L]
RewriteRule ^category-([0-9]+)-b([0-9]+)(.*)\.html$ category\.php\?id=$1&brand=$2 [QSA,L]
RewriteRule ^category-([0-9]+)(.*)\.html$ category\.php\?id=$1 [QSA,L]
RewriteRule ^goods-([0-9]+)(.*)\.html$ goods\.php\?id=$1 [QSA,L]
RewriteRule ^article_cat-([0-9]+)-([0-9]+)-(.+)-([a-zA-Z]+)(.*)\.html$ article_cat\.php\?id=$1&page=$2&sort=$3&order=$4 [QSA,L]
RewriteRule ^article_cat-([0-9]+)-([0-9]+)-(.+)(.*)\.html$ article_cat\.php\?id=$1&page=$2&keywords=$3 [QSA,L]
RewriteRule ^article_cat-([0-9]+)-([0-9]+)(.*)\.html$ article_cat\.php\?id=$1&page=$2 [QSA,L]
RewriteRule ^article_cat-([0-9]+)(.*)\.html$ article_cat\.php\?id=$1 [QSA,L]
RewriteRule ^article-([0-9]+)(.*)\.html$ article\.php\?id=$1 [QSA,L]
RewriteRule ^brand-([0-9]+)-c([0-9]+)-([0-9]+)-(.+)-([a-zA-Z]+)\.html brand\.php\?id=$1&cat=$2&page=$3&sort=$4&order=$5 [QSA,L]
RewriteRule ^brand-([0-9]+)-c([0-9]+)-([0-9]+)(.*)\.html brand\.php\?id=$1&cat=$2&page=$3 [QSA,L]
RewriteRule ^brand-([0-9]+)-c([0-9]+)(.*)\.html brand\.php\?id=$1&cat=$2 [QSA,L]
RewriteRule ^brand-([0-9]+)(.*)\.html brand\.php\?id=$1 [QSA,L]
RewriteRule ^tag-(.*)\.html search\.php\?keywords=$1 [QSA,L]
RewriteRule ^snatch-([0-9]+)\.html$ snatch\.php\?id=$1 [QSA,L]
RewriteRule ^group_buy-([0-9]+)\.html$ group_buy\.php\?act=view&id=$1 [QSA,L]
RewriteRule ^auction-([0-9]+)\.html$ auction\.php\?act=view&id=$1 [QSA,L]
RewriteRule ^exchange-id([0-9]+)(.*)\.html$ exchange\.php\?id=$1&act=view [QSA,L]
RewriteRule ^exchange-([0-9]+)-min([0-9]+)-max([0-9]+)-([0-9]+)-(.+)-([a-zA-Z]+)(.*)\.html$ exchange\.php\?cat_id=$1&integral_min=$2&integral_max=$3&page=$4&sort=$5&order=$6 [QSA,L]
RewriteRule ^exchange-([0-9]+)-([0-9]+)-(.+)-([a-zA-Z]+)(.*)\.html$ exchange\.php\?cat_id=$1&page=$2&sort=$3&order=$4 [QSA,L]
RewriteRule ^exchange-([0-9]+)-([0-9]+)(.*)\.html$ exchange\.php\?cat_id=$1&page=$2 [QSA,L]
RewriteRule ^exchange-([0-9]+)(.*)\.html$ exchange\.php\?cat_id=$1 [QSA,L]
########################################################################
下载地址 http://www.cnop.net/uploadfile/2014/0220/20140220102526261.zip
