Tip: Parent controller to handle exception in Spring MVC
Spring MVC is a powerful framework and I got a tip that can be useful. Spring MVC uses the technique of something called Controller which can be bound to handle the different user request to do a prerequisites before showing the user a specific page he requested.
In case you got many controllers and you need to handle the common exceptions for your application. You can do that by making a parent class which I prefer to call Parent Controller that can handle the exception as the bellow examples shows. Then you can extend that class in your other different controllers.
In case you got many controllers and you need to handle the common exceptions for your application. You can do that by making a parent class which I prefer to call Parent Controller that can handle the exception as the bellow examples shows. Then you can extend that class in your other different controllers.
import org.springframework.web.bind.annotation.ExceptionHandler; import org.springframework.web.servlet.ModelAndView; public class ParentController { private ModelAndView modelAndView; @ExceptionHandler(NullPointerException.class) public ModelAndView handleNullPointerException(NullPointerException e) { // Display the error page modelAndView = new ModelAndView("404"); modelAndView.addObject("message", "NullPointerException occured - " + System.currentTimeMillis()); return modelAndView; } }
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