Question

I have numerous controllers in my application that extend a central controller class. Currently, in every controller function, I have to pass the request into this function in order for my function to grab the current username. Is it possible for this controller class to get the request on it’s own without requiring it as an extra parameter?

public class Controller {
    protected String environment;

    public Controller () {

    }

    public ModelAndView prepareModel (HttpServletRequest request, ModelAndView model) {
        contentDao.clearExpiredLocks();

        model.addObject("currentUser", contentDao.findUser(request.getRemoteUser()));

        //define current environment
        this.environment = (request.getRequestURL().indexOf("localhost") > 0) ? "dev" : "uat";
        model.addObject("environment", this.environment);

Answer 1

You can get the current HttpServletRequest as follows:

HttpServletRequest request = (HttpServletRequest) RequestContextHolder
    .currentRequestAttributes()
    .resolveReference(RequestAttributes.REFERENCE_REQUEST); 

You can use this code in a method of your controller, or use it to expose request as a request-scoped bean and inject the corresponding scoped proxy as a field of your controller.