htaccess的，从暂存URL加载资源时，文件不存在本地 [英] htaccess to load assets from staging URL when file doesn't exist locally

问题描述

我想从一个临时网站加载图像，如果他们没有本地存在。 这基本上是有用的，所以我没有继续下载所有图像上的临时网站的客户端上传。目前，我有什么是工作，但它是一个全有或全无的解决方案。因此，所有的图像远程加载，但我想htaccess的只加载远程图片，如果一个地方不存在。

I'm trying to load images from a staging site if they don't exist locally. This is basically useful so I don't have to keep downloading all the images that the client uploads on the staging site. At the moment, what I have is working, but it's an all-or-nothing solution. So, all the images are loading remotely but I'd like htaccess to only load remote images if a local one doesn't exist.

下面是我有：

的RewriteCond％{HTTP_HOST} ^本地网站\ .dev $
重写规则^ * /上传/(.*)$ http://remote-site.com/wp-content/uploads/$1 [L，R = 301]

RewriteCond %{HTTP_HOST} ^local-site\.dev$
RewriteRule ^.*/uploads/(.*)$ http://remote-site.com/wp-content/uploads/$1 [L,R=301]

在此先感谢。

推荐答案

更​​改您的规则如下：

Change your rule to this:

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{HTTP_HOST} ^local-site\.dev$
RewriteRule ^.*/(uploads/.*)$ http://remote-site.com/wp-content/$1 [L,R=301,NC]

下面的RewriteCond％{} REQUEST_FILENAME！-f 将确保这种重定向只发生在图像文件于本地存在。

Here RewriteCond %{REQUEST_FILENAME} !-f will make sure that this redirection happens only when image file doesn't exist locally.

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