.htaccess上的两种重定向错误

Question

我想用.htaccess

做两件事

1. 将非www（http://domain.com）重定向到www（http://www.domain.com）

2. 我也在尝试重定向手机以获取不同的网址 （http://www.domain.com/mobile）来自（http://www.domain.com）

我正在使用的代码：

    RewriteCond %{HTTP_HOST} ^domain.com [NC]
    RewriteRule ^(.*)$ http://www.domain.com/$1 [L,R=301]

   <IfModule mod_rewrite.c>
  RewriteEngine On
  RewriteCond %{HTTP_USER_AGENT} "android|blackberry|googlebotmobile|iemobile|iphone|ipod|#opera mobile|palmos|webos" [NC]
  RewriteCond %{HTTP_USER_AGENT} "acs|alav|alca|amoi|audi|aste|avan|benq|bird|blac|blaz|brew|cell|cldc|cmd-" [NC,OR]
  RewriteCond %{HTTP_USER_AGENT}"dang|doco|eric|hipt|inno|ipaq|java|jigs|kddi|keji|leno|lgc|lg-d|lg-g|lge-" [NC,OR]
  RewriteCond %{HTTP_USER_AGENT}  "maui|maxo|midp|mits|mmef|mobi|mot-|moto|mwbp|nec-|newt|noki|opwv" [NC,OR]
  RewriteCond %{HTTP_USER_AGENT}"palm|pana|pant|pdxg|phil|play|pluc|port|prox|qtek|qwap|sage|sams|sany" [NC,OR]
  RewriteCond %{HTTP_USER_AGENT} "sch-|sec-|send|seri|sgh-|shar|sie-|siem|smal|smar|sony|sph-|symb|t-mo" [NC,OR]
  RewriteCond %{HTTP_USER_AGENT} "teli|tim-|tosh|tsm-|upg1|upsi|vk-v|voda|w3cs|wap-|wapa|wapi" [NC,OR]
  RewriteCond %{HTTP_USER_AGENT} "wapp|wapr|webc|winw|winw|xda|xda-" [NC,OR]
  RewriteCond %{HTTP_USER_AGENT} "up.browser|up.link|windowssce|iemobile|mini|mmp" [NC,OR]
  RewriteCond %{HTTP_USER_AGENT} "symbian|midp|wap|phone|pocket|mobile|pda|psp" [NC]
  RewriteRule ^$ http://www.domain.com/mobile [L,R=302]

  RewriteBase /
  RewriteRule ^index\.php$ - [L]
  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteRule . /default.htm [L]
    </IfModule>

有人能帮帮我吗？