Pre-method (maybe aspect related)

[rcotta]

Hi all,

I am writing a web application using annotated controllers (@Controller on the class and @RequestMapping("myMapping.do") on methods).

But almost all methods I have put the very same data on model (login URL, logout URL, current user, etc) and I would like to do this setup in a cleaner way.

Is it possible to use an annotation or something like that to always call a method passing the HttpServletRequest and a ModelMap to it as arguments?

Thanks in advance.

[joeslow]

I use a HandlerInterceptorAdapter for that. I have a class like this:

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

public class ToolInjectorInterceptor extends HandlerInterceptorAdapter {

	@Override
	public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
		
		if (modelAndView != null) {
			
			modelAndView.addObject("stringTool", new StringTool());
		}
	}
}

and configure its usage in my servlet context like this:

<!-- default handler mappings to process @RequestMapping Annotations - needed as we customize -->
	<bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" >
		<property name="interceptors">
			<list>
				<ref bean="openSessionInViewInterceptor"/>
				<bean class="ToolInjectorInterceptor" />
			</list>
		</property>
	</bean>

That way I can enrich my model with whatever I need in all request processing and the interceptor also has access to the request.