How to get Path Variables inside a Spring interceptor.[This post assumes that you have an Interceptor registered and set up using XML or Java config]

SomeInterceptor.java

public class SomeInterceptor extends HandlerInterceptorAdapter{
    @Override
  	public boolean preHandle(final HttpServletRequest request,final HttpServletResponse response,final Object handler)
  		throws Exception
  		{
      	      /*Assume the URI is user/{userId}/post/{postId} and our interceptor is registered for this URI.
      	       * This map would then be a map of two elements,with keys 'userId' and 'postId'
      	       */
  	  	 final Map<String, String> pathVariables = (Map<String, String>) request
  	  		                                                                .getAttribute(HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE);
            
               //You'll have to convert the String to Long or Integer or any other type manually. For instance..
               //final Integer userId = Integer.valueOf(pathVariables.get("userId"));
               //final Long postId = Long.valueOf(pathVariables.get("postId"));
            
  		}
}

Get the Method from the handler, then use reflection to find the annotations and types of the matching parameter.

AnnotatedType[] at = method.getAnnotatedParameterTypes();
// ... code to find the param you want ...  assume n has the target index
// or you can loop through AnnotateType list matching the 
String paramName = at[n].getAnnotation(PathVariable.class).value();
Type type = at[n].getType();

Helpful - thanks!

Awesome!

thanks :)

How can i get these parameters in order, as this is unordered map so it will not provide me ordered keys according to the url?
for eg: i have "http://localhost:8080/url/123/234/xyz/123" which should map to "http://localhost:8080/url/{id}/{deptId}/{code}/{empId}".
Now how can i know that first 123 maps to id or empId ???