解决CodeIgniter伪静态失效

<IfModule mod_rewrite.c>
 RewriteEngine on
 RewriteBase /onsite

 RewriteCond %{REQUEST_URI} ^system.*
        RewriteRule ^(.*)$ /index.php?/$1 [L]

 RewriteCond %{REQUEST_URI} ^application.*
        RewriteRule ^(.*)$ /index.php?/$1 [L]

 RewriteCond %{REQUEST_FILENAME} !-f
 RewriteCond %{REQUEST_FILENAME} !-d
 RewriteRule ^(.*)\.html$ index.php/welcome/index/$1 [L]
</IfModule>

$config['uri_protocol'] = 'AUTO';

$config['uri_protocol'] = 'PATH_INFO';