nginx缩略图模块http_image_filter_module配置

#https://xx.com/a.jpg!80x80 匹配方式
    location ~* /(.*)\/([\w]+)\.(jpg|png|jpeg|gif)!(\d+)x(\d+)$ {
        if (-f $request_filename) {
            break;
        }
 
        set $filepath $1;
        set $filename "$2.$3";
        set $thumb    "$2_$4x$5.$3";
        set $width    $4;
        set $height   $5;
 
        if (!-f $document_root/$filepath/$filename) {
            return 404;
        }
 
        rewrite /(.*)\/([\w]+)\.(.*) /imgcache/$filepath/$2.$3;
 
        if (!-f $request_filename) {
            proxy_pass http://127.0.0.1:$server_port/image-resize/$filepath/$filename?width=$width&height=$height;
            break;
        }
 
        proxy_store          $document_root/imgcache/$filepath/$thumb;
        proxy_store_access   user:rw  group:rw  all:r;
        proxy_set_header     Host $host;
    }
 
    # 匹配满足 /image_resize的URI，都是来自上面的location
    location /image-resize {
        rewrite /(image-resize)/(.*) /$2 break;
        # 根据参数，resize 找到的图片
        image_filter resize $arg_width $arg_height;
        image_filter_jpeg_quality 75;
        image_filter_buffer 10M;
        # 禁止外网的访问，只允许本地访问
        allow 127.0.0.0/8;
        deny all;
    }