如何在自定义HandlerMethodArgumentResolver中访问路径变量

Question

considering this spring MVC handler method:

  @RequestMapping(value = "/profile/{id}", method = RequestMethod.GET)
  public String displayProfile(Person person, ModelMap model) { ... }

my question: can I access the value of id in this resolver without having to parse the URl manually:

public class PersonReslover implements HandlerMethodArgumentResolver { .. }

Answer 1

Using NativeWebRequest reference, which is accessible from resolveArgument() method of HandlerMethodArgumentResolver.

For example:

 private Map<String, String> getPathVariables(NativeWebRequest webRequest) {

    HttpServletRequest httpServletRequest = webRequest.getNativeRequest(HttpServletRequest.class);
    return (Map<String, String>) httpServletRequest.getAttribute(HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE);
}