codeigniter .htaccess 文件无法访问 css 和 js 文件后添加用户代理过滤器给出 404

Question

codeigniter .htaccess file unable access css and js file after addition of useragent filter giving 404

 RewriteEngine On
 RewriteCond %{HTTP_USER_AGENT} AltaVista [OR]
 RewriteCond %{HTTP_USER_AGENT} Googlebot [OR]
 RewriteRule .? - [S=1]
 RewriteCond %{REQUEST_FILENAME} !-f   
 RewriteCond %{REQUEST_FILENAME} !-d 
 RewriteRule .? - [S=0]
 RewriteCond %{REQUEST_FILENAME} -f   
 RewriteCond %{REQUEST_FILENAME} -d   
 RewriteRule .? - [S=2]
 RewriteRule ^(.*)$ index.php?/$1 
 RewriteRule ^(.*)$ /error_page.php 

Answer 1

 # 1 RewriteCond %{HTTP_USER_AGENT} AltaVista [OR] RewriteCond %{HTTP_USER_AGENT} Googlebot [OR] RewriteRule.? - [S=1] # 2 RewriteCond %{REQUEST_FILENAME}.-f RewriteCond %{REQUEST_FILENAME}?-d RewriteRule.? - [S=0] # 3 RewriteCond %{REQUEST_FILENAME} -f RewriteCond %{REQUEST_FILENAME} -d RewriteRule .? - [S=2]

It's unclear which directives you've "added" since #1 and #2 are nonsense and aren't actually doing anything. The erroneous OR flag on the last RewriteCond directive of the first rule results in the rule always being successful and skipping the next rule, which isn't actually doing anything anyway.

So, you could (and probably should) remove #1 and #2 and you will see no change.

The problem with being "unable to access css and js files" is caused by rule #3 (but this isn't associated with a "user-agent filter"). This is checking if the request maps to a file AND a directory, which is impossible so is never processed and the following two rules are not skipped ( S=2 ). This means that requests for any static resources (such as CSS and JS files) are passed to the Codeigniter front-controller, rather than "skipping it", which presumably results in a 404 (because they are not valid CI routes).

You need an OR flag on the first condition. For example:

# 3
RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d   
RewriteRule .? - [S=2]

However, there are still more problems...

 RewriteRule ^(.*)$ index.php?/$1 RewriteRule ^(.*)$ /error_page.php

The first rule that rewrites to the CI front-controller ( index.php ) needs an L (or END ) flag.

And the second rule (that rewrites everything to /error_page.php ) does not make sense in this context and should be removed.