NGINX 正则表达式与可选参数匹配位置

Question

我喜欢用两个可选参数匹配位置，所以它匹配

/images/my.jpg
/images/my.jpg/200
/images/my.jpg/200/
/images/my.jpg/200/400
/images/my.jpg/200/400/

我正在使用三个匹配组，以便可以在 $image、$width 和 $height 变量中获取匹配的部分。

我试过这个查询。它仅在给出完整位置时才有效，但如果缺少其中一个参数则不匹配

~ ^/images/(?<img>.+?)/(?<width>\d+)/(?<height>\d+)?$

我也试过了，完全不行

~ ^/images/(?<img>.+?)?(/?<width>\d+)?(/?<height>\d+)?$

请帮忙 - 我这里有输入数据。 https://regex101.com/r/qU7tI7/6

这里是nginx配置

 server {
    listen       80;
    server_name  f.myhost.com;
    set $sitename f.myhost.com;

    root $root_folder/myhost.com/files;
    set $path_info "";

    location / {
            root   /var/www/myhost.com/app/api/;
            include conf.d/site.template;
            add_header X-test "root";
    }

    location /files {
            root   /var/www/myhost.com/app/;
            include conf.d/site.template;
    }

    location ~ ^/images/(?<img>[^/]+)(/(?<width>\d*))?(/(?<height>\d*))?$ {
    #       root   /var/www/myhost.com/files/;
            alias   /var/www/myhost.com/app/test/$image;
    #       include conf.d/site.template;
            add_header X-test "test";
            add_header X-width "$width";
            add_header X-height "$height";
            add_header X-name "$image";
            image_filter resize $width -;
            image_filter_jpeg_quality 75;
            image_filter_buffer 8M;


    }

 }

Answer 1

试试下面的正则表达式：

/^(\/images\/)([\da-z\.-]+\.[a-z\.]{2,6}|[\d\.]+)\/(\d+)\/(\d+)?$/igm