.htaccess 500 error. RewriteRule not working as it should

问题

I have a problem with one of my .htaccess rewriterule: Server details: Server runs LiteSpeed Webserver not Apache, according to my host provider it's 100% compatible with apache mod_rewrite.
Problem: I get 500 Internal Server Error when i use this code:

<IfModule mod_rewrite.c>
  Options +FollowSymLinks
  Options +Indexes  
   RewriteEngine On
   RewriteBase /
   RewriteCond %{HTTP_HOST} !^www\.mysite\.com$ [NC]
   RewriteCond %{HTTP_HOST} ^(www.)?([a-z0-9-]+).mysite.com$ [NC]
   RewriteRule ^(.*)$  %2/$1 [L,QSA,NC]
</IfModule>

When I use this code, it pretty much does what it is suppose to do it redirects traffic from any sub-domain to a corresponding sub-folder with file request also. No Error, no nothing it works OK but it also changes the browser's address which i don't wish.

<IfModule mod_rewrite.c>
  Options +FollowSymLinks
  Options +Indexes  
   RewriteEngine On
   RewriteBase /
   RewriteCond %{HTTP_HOST} !^www\.mysite\.com$ [NC]
   RewriteCond %{HTTP_HOST} ^(www.)?([a-z0-9-]+).mysite.com$ [NC]
   RewriteRule ^(.*)$  http://mysite.com/%2/$1 [L,QSA,NC]
</IfModule>

Any ideas?

Editetd : One thing i would like to mention is that i use wildcard DNS the subdomain don't realy exist. Editted yet again : RewriteRule ^(.*)$ %2/index.php [L,QSA,NC] if i use this rule and try to acces a http://sub.mysite.com/whatever it succesfuly redirects it to http://mysite.com/sub/index.php i don't get it why it does not work with $1 instead of index.php when i change them i get 500 internal server error.

Got the solution now :

<IfModule mod_rewrite.c>
Options +FollowSymLinks
Options +Indexes  
RewriteEngine On
RewriteBase /
RewriteCond %{ENV:REDIRECT_STATUS} !200
RewriteCond %{HTTP_HOST} ^(.*)mysite\.com$ [NC]
RewriteCond   %{HTTP_HOST} !^www\.* [NC]
RewriteRule ^(.*)$ http://www.%1mysite.com/$1 [R=301,L,QSA] [NC]
RewriteCond %{HTTP_HOST}     !^www\.mysite\.com$              [NC]
RewriteCond %{HTTP_HOST}     ^(www.)?([a-z0-9-]+).mysite.com$ [NC]
RewriteCond %2==$1           !^(.*)==\1                                        
RewriteRule ^(.*) %2/$1$2$3   [L,QSA,NC]
</IfModule>

回答1:

This is an interesting generic problem which merits a generic solution, so how about:

#
# Rule matches ('fred','','')    for pattern 'fred'
#              ('123','/',fred') for pattern '123/fred'
# At cond 2 %2 is the subdomain e.g. 123 for www.123.mysite.com
# Hence cond 3 pattern is 123==123 for www.123.mysite.com/123/fred
# and this will match ^(.*?)==\1 or fail its negation
#
RewriteCond %{HTTP_HOST}     !^www\.mysite\.com$              [NC]
RewriteCond %{HTTP_HOST}     ^(www.)?([a-z0-9-]+).mysite.com$ [NC]
RewriteCond %2==$1           !^(.*?)==\1                                        
RewriteRule ^([^/]*)(/?)(.*) %1/$1$2$3                        [L]

回答2:

I think your rule should be re-written like this:

Options +FollowSymLinks -MultiViews
RewriteEngine on

RewriteCond %{HTTP_HOST} !^(www\.)?mysite\.com$ [NC]
RewriteCond %{HTTP_HOST} ^(www\.)?([a-z0-9-]+)\.mysite\.com$ [NC]
RewriteRule ^ http://mysite.com/%2%{REQUEST_URI} [L,P]

P flag will make it act like a proxy and will keep the URL in browser to subdomain.mysite.com/whatever instead of mysite.com/subdomain/whatever

回答3:

This is because it is creating an infinite rewrite loop. 123.mysite.com/ get rewritten to 123.mysite.com/123/, which gets rewritten to 123.mysite.com/123/123/ etc.

Try using this to prevent this loop:

RewriteCond %{ENV:REDIRECT_STATUS} !200
RewriteCond %{HTTP_HOST} !^www\.mysite\.com$ [NC]
RewriteCond %{HTTP_HOST} ^(www.)?([a-z0-9-]+).mysite.com$ [NC]
RewriteRule ^(.*)$  %2/$1 [L,QSA,NC]

来源：https://stackoverflow.com/questions/9023448/htaccess-500-error-rewriterule-not-working-as-it-should

标签

.htaccess

mod-rewrite