Spring MVC Controller classname from JSP / page

Question

I have a question, and a problem that I need fixed soon... I have pulled my hair out while going through some alternatives on how to solve this problem.

See, I have a need to display the current serving Spring Controller from a JSP page. The name doesn't have to be parsed in the JSP itself, I'm actually using another class (a kind of taglibrary) to display this information on the bottom of ever page.

Is there a way to get the controller name from an outside class? (When i say outside, I mean from another class than the Controller itself.) Perhaps from the request somehow? (Or some Spring Security request attribute?). Perhaps an interceptor?

I would like to avoid extending a class from the controller just to fix this issue.

Any advice is appriciated!

Answer 1

You can implement a HandlerInterceptor* it has a method postHandle, that has the two parameters you need:

• Object handler - that the can be cast to HandlerMethod, contains the information about the Controller Method that has handled the request
• ModelAndView - there you need to add the new information about the handling Method

complete Method signature org.springframework.web.servlet.HandlerInterceptor#postHandle:

void postHandle(HttpServletRequest request,
                HttpServletResponse response,
                Object handler,
                ModelAndView modelAndView)
      throws Exception;

* Instead of implementing a HandlerInterceptor directly, one can extend HandlerInterceptorAdapter - that is a convenient abstract class that implements all methods of HandlerInterceptor with an empty body, so that one only need to override the methods that are needed.

* Don't get confused, there are two HandlerInterceptor classes, one for Servlets, and one for Portlets (org.springframework.web.portlet.HandlerInterceptor). Use the HandlerInterceptor for Servlets oorg.springframework.web.servlet.HandlerInterceptor !

Answer 2

The normal java way, from mwithin the controller itself probably won;t work as spring creates a proxy of the original class :

String className = this.getClass().getSimpleName();

I think you need to implement a request mapping handler