Simple Spring View Controller

Here’s a tip in Spring if you want certain URLs to redirect to specific JSP… For example:

//www.ideyatech.com/magic/login.jspx -> acegi_login.jsp

//www.ideyatech.com/magic/logout.jspx -> acegi_logout.jsp

Since Spring does not allow mapping directly to a jsp page. You need to create a controller to return the appropriate view. Alternatively, you can use URLFilenameViewController but then you’ll be limited to “prefix” and “postfix” append only. What if you wanted the mapping to be explicit as shown in example above?

My solution is to create a generic controller that will do the mapping. To do this, I’ve created a ViewMapController which behaves in almost exact the same manner with URLFilenameViewController except that mapping is explicitly specified with the filename.

In the example below, I’ve mapped /login.jspx to /jsp/acegi-login.jsp and /denied.jspx to /jsp/access-denied.jsp
STEP 1: Declare your mapping with SimpleUrlHandlerMapping

STEP 2: Declare your viewMapController with the view mapping. Declare your viewMapController with the view mapping.

STEP 3: Create the class ViewMapController.

public class ViewMapController extends AbstractController {
private Map viewMap;
private String defaultView;

@Override
protected ModelAndView handleRequestInternal(HttpServletRequest request,
HttpServletResponse response) throws Exception {
String uri = request.getRequestURI();
String key;
String viewName;

int idx = uri.lastIndexOf(“/”);
if (idx > 0)
key = uri.substring(idx+1);
else
key = uri;
if (viewMap.containsKey(key))
viewName = viewMap.get(key);
else
viewName = defaultView;
return new ModelAndView(viewName);
}

public void setViewMap(Map viewMap) {
this.viewMap = viewMap;
}

public void setDefaultView(String defaultView) {
this.defaultView = defaultView;
}
}

Note: the view will be resolved using your viewResolver. In this case, in order to resolve acegi-login to \jsp\acegi-login.jsp, I’ve declared the viewResolver as:

That’s all folks. You now have a more flexible way to map URLs directly to your JSP pages.