Question

I am trying to construct a clean URL mapping inside my MVC application and I found alot of common urls like:

/SITE/{city}-{language}/user/{userId}

@RequestMapping(value = "/{city}-{language}/user/{userId}", 
         method = RequestMethod.GET)
public String user(@PathVariable String city, 
                   @PathVariable String language, 
                   @PathVariable String userId, 
                   Model model) {}

/SITE/{city}-{language}/comment/{userId}-{commentId}

@RequestMapping(value = "/{city}-{language}/comment/{userId}-{commentId}",
         method = RequestMethod.GET)
public String comment(@PathVariable String city,
                      @PathVariable String language, 
                      @PathVariable String userId,
                      @PathVariable String commentId, 
                      Model model) {}

Is there a way to auto bind the city and the language to the model automatically instead of @PathVariable of Filters, I think it make since as it will reduce the @RequestMapping function paramets count.

Answer 1

I make a work around that serves my need, I created an abstract base class that maps the common params.

public abstract class AbstractController {

    @ModelAttribute("currentCity")
    public CityEntity getCurrentCity(@PathVariable CityEntity city) {
        //CityEntity via a converter class
        return city;
    }

    @ModelAttribute("language")
    public String getLanguage(@PathVariable String language) {
        return language;
    }
}

and now the two common attributes will be available in the model object

@RequestMapping(value = "/{city}-{language}")
public class UserController extends AbstractController {

      @RequestMapping(value = "/user/{userId}", method = RequestMethod.GET)
      public String user(@PathVariable String userId, 
               Model model) {...}

}