为什么重定向地图不适用于静态文件？

Question

我正在尝试使用 nginx 配置 redirect_maps，用于移动到文件夹的一系列 PNG 图像。例如/images/2022/stackoverflow.png变成/images/anewfolder...。我需要指定新路径的位置，所以我正在考虑使用 redirect_maps。

在我的配置文件中，我输入了：

map $request_uri $redirect_uri{
    /images/2022/stackoverflow.png /images/newfolder/stackoverflow.png;
}

server {
 [.. redacted for sensitive data ..]

     location / {

        if ($request_filename !~* .(gif|webp|jpe?g|png|json|ico|js|css|flv|swf|pdf|xml)$ ) {
            rewrite ^([^.]*[^/])$ $1/ permanent;
        }

        if ($redirect_uri){
            return 301 https://google.com$redirect_uri;
        }

        # First attempt to serve request as file, then # as directory, then fall back to displaying a 404.
        try_files $uri $uri/ =404;
        }
}

nginx 的选项 2：

location / {
                if ($redirect_uri){
                        return 301 https://google.com$redirect_uri;
                }

                rewrite ^([^.]*[^/])$ $1/ permanent;

                # First attempt to serve request as file, then # as directory, then fall back to displaying a 404.
                try_files $uri $uri/ =404;
}