How to read .yml file according to a passed parameter and how to set a default value if parameter does not match in Springboot?

Question

Is there a way I can pass a parameter to specify which list in "APP" / "WEB" I like to get? e.g. getting [abc.com, efg.com] when I pass "APP" as parameter. And can I have a Default result when none of them is matched against that parameter? Thank you.

I get the .yml file as Map with below code

url:
  filter:
  APP:
    - abc.com
    - def.com
  ...
  WEB:
    - ghi.com
    - jkl.com

  /*DEFAULT?*/

I only want to get the list inside "APP" or "WEB" according to the parameter passed if there can be any. But right now I have to get the whole filter as map before I get the list I want. And I don't know how to make a Default list if parameter is not "APP" nor "WEB"

@ConfigurationProperties(prefix="url")
public class UrlConfig {
    private Map<String,List<String>>filter;

    public Map<String, List<String>> getFilter() {
        return filter;
    }

    public List<String> getFilterByDevice(String device){
        return getFilter().get(device);
    }
}

In getFilter(), I get the result as below. By getFilterByDevice(device), I get the List according to the device but I have to get the whole map in getFilter() first. Is there a way not to get the whole map before getting the list I want?

{APP=[abc.com, def.com], WEB=[ghi.com, jkl.com]}

This is where I get the value, device has to be read from a method:

private void filter(device){
List<String> filter = UrlConfig.getFilterByDevice(device);
}