@RequestMapping (value = "/delete/{file}", method = RequestMethod.DELETE)
public ModelAndView delete(@PathVariable String file){
    ModelAndView view = new ModelAndView(VIEW);
    service.delete(file);
    view.addObject("success", Boolean.TRUE);
    return view;
}

@RequestMapping (value = "/delete/{file}.{ext}", method = RequestMethod.DELETE)
public ModelAndView delete(@PathVariable("file") String file, @PathVariable("ext") String ext){
    ModelAndView view = new ModelAndView(VIEW);
    service.delete(file + "." + ext);
    view.addObject("success", Boolean.TRUE);
    return view;
}