在apache的conf文件中，打开httpd.conf

去掉下面的注释

LoadModule rewrite_module modules/mod_rewrite.so

###################################################

<VirtualHost *:80>
DocumentRoot “/var/www/html/y80h”
ServerName www.y80h.com
ServerAlias y80h.com
<Directory “/var/www/html/y80h”>
allow from all
Options +Indexes
</Directory>
RewriteEngine On
RewriteCond %{http_host} ^y80h.com [NC]
RewriteRule ^(.*)$ http://www.y80h.com [L,R=301]

#这样设置无论访问y80h.com/xxxx/xxxx的页面，都只跳到www.y80h.com首页
</VirtualHost>

将输入 www.xxoo.com 的域名时跳转到www.xyz.com

RewriteEngine on
RewriteCond %{HTTP_HOST} ^www.xxoo.com [NC]
RewriteRule ^(.*) http://www.xyz.com/ [L]

上面这两种方法只会跳到首页，如果想从目录跳到目录，要这样。。。。

<VirtualHost *:80>
DocumentRoot /var/www/domains/www.1234.com
ServerName www.1234.com
ServerAlias 1234.com
<Directory /var/www/domains/www.1234.com>
AllowOverride All
</Directory>
RewriteEngine On
RewriteCond %{http_host} ^www.1234.com [NC]
RewriteRule ^(.*)$ http://www.456.com$1 [L,R=301]
RewriteCond %{http_host} ^1234.com [NC]
RewriteRule ^(.*)$ http://www.456.com$1 [L,R=301]
</VirtualHost>

这样访问原来网站的任何连接，都会跳到新域名的对应该链接上