htaccess重写规则，用于将文件夹中的所有图像复制到另一个域

Question

I have a live site (livesite.com) and a dev site (devsite.com). The images directory is so huge that I am not able to copy it from livesite.com to devsite.com. Therefore, I want to add a rewrite rule for devsite.com to fetch the image from livesite.com (the directory structure on both sites are identical - its just the domain that's different)

It's a wordpress site so the images are located in this structure for each month;

/wp-content/uploads/2015/01/image.jpg
/wp-content/uploads/2015/02/image.jpg
etc..

I need to add a rewrite rule just for everything in the 2015 directory.

So far, this is what I have in the htaccess file in the root of devsite.com; It's targetting a specific sub-directory in the 2015 folder and I can't even get this to work - the images are still trying to be retrieved from the devsite.com domain rather than livesite.com

Options +FollowSymLinks
RewriteEngine On
RewriteRule /wp-content/uploads/2015/01/(.*)$ http://livesite.com/wp-content/uploads/2015/01/$1 [R=302,NC,L]

I suspect I have made a bumbling error here - any help appreciated!

Answer 1

The problem is with the pattern, which starts with a slash, see RewriteRule

Per-directory Rewrites
- The removed prefix always ends with a slash, meaning the matching occurs against a string which never has a leading slash. Therefore, a Pattern with ^/ never matches in per-directory context.

So, in your case it should be

RewriteRule ^wp-content/uploads/2015/01/(.*)$ http://livesite.com/wp-content/uploads/2015/01/$1 [R=302,NC,L]

Although, since you want to cover the whole 2015 subdirectory, you can simplify this to

RewriteRule ^wp-content/uploads/2015/(.*)$ http://livesite.com/wp-content/uploads/2015/$1 [R,NC,L]

or even

RewriteRule ^wp-content/uploads/2015/(.*)$ http://livesite.com%{REQUEST_URI} [R,NC,L]