用mod_rewrite更改文件名？

Question

If you have a file /foo/index.html that you want to access via /bar/index.html that's easy enough with a rewrite:

RewriteRule ^bar/(.*)$    foo/$1 [L] # <-- Leaves URL the same, but gives content of foo/

But that means both /foo/index.html and /bar/index.html now work to access the content. Is there a way to now disallow access via /foo/index.html ? Just doing:

RewriteRule ^foo/(.*)$    bar/$1 [R=301,L] # <-- Change the URL if accessed via /foo
RewriteRule ^bar/(.*)$    foo/$1 [L] # <-- Leaves URL the same, but gives content of foo/

causes a redirect loop. Is there a way to indicate "redirect foo to bar, unless the URL is already '/bar'"?

Answer 1

Yeah, but you need to do a check against something like %{THE_REQUEST} otherwise your two rules are going to keep changing each other's rewrites and loop. So something like:

# this is the rule you already had:
RewriteRule ^bar/(.*)$    foo/$1 [L]

# this is the rule that externally redirects
RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /foo/
RewriteRule ^foo/(.*)$ /bar/$1 [L,R=301]

The check against the %{THE_REQUEST} variable ensures that the actual request was made for /foo , and not an internally rewritten request.