僅當使用 .htaccess 不存在圖像時才重寫

僅當此目錄中的文件不存在時，如何使 RewriteCond+RewriteRule 將 site1.com/folder1 更改為 site2.com/folder1。例如：site1.com/wp-content/uploads/2014/03/image.jpg

如果圖像 site1.com/wp-content/uploads/2014/03/image.jpg 不存在，則獲取 site2.com/wp-content/uploads/2014/03/image.jpg 但如果圖像存在，則不要不做任何事。

更新，這裡是我需要的程式碼，謝謝大家的幫助）

Options +FollowSymLinks
RewriteEngine ON
RewriteCond %{REQUEST_URI} "/uploads/"
RewriteCond %{REQUEST_FILENAME} .*\.(jpeg|jpg|gif|png)$
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule (.+) http://site2.com/$1 [L,R=301]

嘗試這樣的事情。

RewriteCond %{REQUEST_FILE} !-f RewriteRule ^(.*)$ http://site2.com/$1 [QSA,R,L]

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
# the above ignores any url for a file that exists on the site
RewriteCond %{REQUEST_FILENAME} !-d
# the above ignores any url for a directory that exists on the site
RewriteRule ^(.*)$ http://[NEW_DOMAIN]/$1 [QSA,R,L]
# Redirect to another site and remain the same URL

引用自：https://serverfault.com/questions/592379