Spring Controller to handle all requests not match

问题:

I have a series of Controllers with Request Mappings that match certain URL's. I also want a Controller that will match any other URL not matched by the other Controllers. Is there a way to do this in Spring MVC? For example, could i have a controller with @RequestMapping(value="**") and change the order in which Spring Controllers are processed so this Controller is processed last to catch all unmatched requests? Or is there another way to achieve this behaviour?

回答1:

If your base url is like that= http://localhost/myapp/ where myapp is your context then myapp/a.html, myapp/b.html myapp/c.html will get mapped to the first 3 method in the following controller. But anything else will reach the last method which matches **. Please note that , if you put ** mapped method at the top of your controller then all request will reach this method.

Then this controller servrs your requirement:

@Controller
@RequestMapping("/")
public class ImportController{

    @RequestMapping(value = "a.html", method = RequestMethod.GET)
    public ModelAndView getA(HttpServletRequest req) {
        ModelAndView mv;
        mv = new ModelAndView("a");
        return mv;
    }

    @RequestMapping(value = "b.html", method = RequestMethod.GET)
    public ModelAndView getB(HttpServletRequest req) {
        ModelAndView mv;
        mv = new ModelAndView("b");
        return mv;
    }

    @RequestMapping(value = "c.html", method = RequestMethod.GET)
    public ModelAndView getC(HttpServletRequest req) {
        ModelAndView mv;
        mv = new ModelAndView("c");
        return mv;
    }

@RequestMapping(value="**",method = RequestMethod.GET)
public String getAnythingelse(){
return "redirect:/404.html";
}

回答2:

@RequestMapping (value = "/**", method = {RequestMethod.GET, RequestMethod.POST})
public ResponseEntity<String> defaultPath() {
    LOGGER.info("Unmapped request handling!");
    return new ResponseEntity<String>("Unmapped request", HttpStatus.OK);
}

This will do the work with proper order of controller matching. It will be used when nothing is matched.