Issue
I've been using Spring MVC for three months now. I was considering a good way to dynamically add RequestMapping. This comes from the necessity to put controller parts in a library and then add them dinamically. Anyway, the only way I can think of is to declare a controller like this:
@Controller
@RequestMapping("/mypage")
public class MyController {
@RequestMapping(method = RequestMethod.GET)
public ModelAndView mainHandler(HttpServletRequest req) {
return handleTheRest(req);
}
}
Which is no good because basically I'm not using Spring. Then I cannot use form binding, annotations etc.. I'd like to add requestMappings dynamically to methods of classes that could be annotated like usual MVC controllers, with autobinding, so that I could avoid processing HttpServletRequest manually.
Any ideas? }
Solution
Spring MVC performs URL mappings using implementations of the HandlerMapping interface. The ones usually used out of the box are the default implementations, namely SimpleUrlHandlerMapping, BeanNameUrlHandlerMapping and DefaultAnnotationHandlerMapping.
If you want to implement your own mapping mechanism, this is fairly easy to do - just implement that interface (or, perhaps more likely, extend AbstractUrlHandlerMapping), declare the class as a bean in your context, and it will be consulted by DispatcherServlet when a request needs to be mapped.
Note that you can have as many HandlerMapping implementations as you like in the one context. They will be consulted in turn until one of them has a match.
Answered By - skaffman
Answer Checked By - David Goodson (JavaFixing Volunteer)
