Question

I have a Spring MVC webapp that uses Spring Security. I want to add “Store is closed” functionality – i.e. if I set the store to be closed, regardless of where the user tries to navigate on my site they will end up on the page saying “Store is closed”.

I have implemented a Security Filter as follows (and can wire it in fine):

public class ClosedFilter extends OncePerRequestFilter {

@Override
protected void doFilterInternal(HttpServletRequest req,
        HttpServletResponse response,
        FilterChain chain) throws ServletException, IOException {

    if(storeIsClosed()) {
        //do something useful here
    }else {
        chain.doFilter(req, response);
            }

}

}

But am unsure what to put in the “//do something useful here” bit. I have tried:

throw new StoreIsClosedException();  //extends RuntimeException

but I can’t then map my exception to my view. I also tried

response.redirect("myClosedView");

with no luck. What I want is something conceptually like:

   return new ModelAndView("closed");

Thanks.

Answer 1

I ended up with a solution, I changed my filter to:

public class ClosedFilter extends OncePerRequestFilter {

@Override
protected void doFilterInternal(HttpServletRequest req,
        HttpServletResponse response,
        FilterChain chain) throws ServletException, IOException {

    if (isClosed()) {
        final String path = req.getContextPath()+"/closed.do";
        if(!path.equals(req.getRequestURI())) {
            response.sendRedirect(path);
            return;
        }
    }
    chain.doFilter(req, response);
}


}

and then added this to my security.xml

<intercept-url pattern="/closed.do*" access="permitAll"/>