我只是被nginx弄湿了脚。过去我用过。htaccess文件位于/wp content/uploads中，因此如果我的开发人员或临时服务器没有该文件，它会重定向到生产服务器：

<IfModule mod_rewrite.c>
  RewriteEngine On

  RewriteBase /wp-content/uploads/
  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteRule ^(.*) http://production.server.com/m/wp-content/uploads/$1 [L,P]

</IfModule>

我在nginx做这件事运气不好。部分原因可能是因为我的站点此时位于子目录（/m/）中。

# Tells nginx which directory the files for this domain are located
root         /srv/www/example/htdocs;
index               index.php;

    # Subdirectory location settings

    location /m {
            index index.php;
            try_files $uri $uri/ /m/index.php?$args;
            location /m/wp-content/uploads {
                    try_files $uri $uri/ @prod_svr;
            }
    }
    location @prod_svr {
            proxy_pass http://production.server.com/m/wp-content/uploads$uri;
    }

任何想法都会受到极大的赞赏。

server {
    root /srv/www/example/htdocs;
    index index.php;

    # Matches any URL containing /wp-content/uploads/    
    location ~ "^(.*)/wp-content/uploads/(.*)$" {
        try_files $uri @prod_serv;
    }

    # Will redirect requests to your production server
    location @prod_serv {
        rewrite "^(.*)/wp-content/uploads/(.*)$" "http://yourdomain.com/m/wp-content/uploads/$2" redirect;
    }

    # The rest of your location blocks...
    location /m {
        index index.php;
        try_files $uri $uri/ /m/index.php?$args;
    }
}

server {
    server_name mywebsite.dev;
    set $production mywebsite.wpengine.com;

    # Redirect requests to /wp-content/uploads/* to production server
    location @prod_uploads {
        rewrite "^(.*)/wp-content/uploads/(.*)$" "https://$production/wp-content/uploads/$2" break;
    }

    # Rule for handling requests to https://mywebsite.dev/wp-content/uploads/
    location ~ "^/wp-content/uploads/(.*)$" {
        try_files $uri @prod_uploads;
    }
}