@RequestMapping(value = "create", method = RequestMethod.GET)
 public String create(Model model) {
   List<CourseCategory> categorys = courseCategorySevice.getAllCourseCategory();
   List<CourseType> types = courseTypeService.getAllCourseType();
   model.addAttribute("categorys", categorys);
   model.addAttribute("types", types);
   return "user/designcourse/create";
 }
  @RequestMapping(value = "modify", method = RequestMethod.GET)
  public String modify(String id, Model model) {

    Course course = courseService.findOne(id);
    List<CourseCategory> categorys = courseCategorySevice.getAllCourseCategory();
    List<CourseType> types = courseTypeService.getAllCourseType();
    model.addAttribute("categorys", categorys);
    model.addAttribute("types", types);
    model.addAttribute("course", course);
    return "user/designcourse/modify";
  }