如何使用mod_Rewrite检查多个文件夹中的静态文件

Question

What are the mod_Rewrite rules for checking multiple folder locations for a given file. For instance, if I have a folder structure of:

public/
    css/
    library1/
        css/
    library2/
        css/

and I want requests to /css/somefile.css to first check the public/css/ directory, then cascade to public/library1/css/ then public/library2/css/ , returning a 404 if an asset cannot be found in any of the directories.

I was thinking along the lines of:

RewriteCond %{SCRIPT_FILENAME} !-f
RewriteCond library1%{REQUEST_URI} -f
RewriteRule ^(.*)$ library1$1 [L]

RewriteCond %{SCRIPT_FILENAME} !-f
RewriteCond library2%{REQUEST_URI} -f
RewriteRule ^(.*)$ library2$1 [L]

But this doesn't seem to work - I'm not sure how to check for file existence on a dynamically generated path.

Answer 1

Try these rules:

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{DOCUMENT_ROOT}/library1%{REQUEST_URI} -f
RewriteRule ^css/.+ library1%{REQUEST_URI} [L]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{DOCUMENT_ROOT}/library2%{REQUEST_URI} -f
RewriteRule ^css/.+ library2%{REQUEST_URI} [L]

Answer 2

RewriteMap指令可能有所帮助。

Answer 3

Possibly the server variables do not contain what you think. Try increase the logging to debug, so you can see exactly what is going on.

Answer 4

Try this:

# Loads files from production server
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule (library1|library2)/(.*)$ http://production.com/$1/$2 [R=302,L,NC]

To achieve this:

something.dev/ library1 /style.css -> production.com/ library1 / style.css something.dev/ library2 / vendor/css/style.css -> production.com/ library2 / vendor/css/style.css