spring mvc 重定向

@RequestMapping(value = "/list")
	public ModelAndView list() {
		ModelAndView mav = new ModelAndView("company/list");
		
		String result = restTemplate.getForObject(Constants.SERVER_URL+"/company/findall", String.class);
		List<Company> ls = JSON.parseArray(result, Company.class);
		
		mav.addObject("list", ls);
		
		return mav;

	}

@RequestMapping(value = "/update")
	public ModelAndView update(Company c) {
		
		HttpEntity<Company> entity = new HttpEntity<Company>(c);
		restTemplate.put(Constants.SERVER_URL+"/company/", entity, Map.class);
		
		return redirectToList();

	}

private ModelAndView redirectToList(){
		return  new ModelAndView("redirect:/company/list");
	}