springboot页面缓存和url缓存实例

@Autowired
    RedisService redisService;
    
    @Autowired
    GoodsService goodsService;
    
    @Autowired
    ThymeleafViewResolver thymeleafViewResolver;
    
    @Autowired
    ApplicationContext applicationContext;
    
    /**
     * 商品列表
     * */
    @RequestMapping(value="/to_list", produces="text/html")
    @ResponseBody
    public String list(HttpServletRequest request, HttpServletResponse response, Model model,MiaoshaUser user) {
        model.addAttribute("user", user);
        //取缓存
        String html = redisService.get(GoodsKey.getGoodsList, "", String.class);
        if(!StringUtils.isEmpty(html)) {
            return html;
        }
        List<GoodsVo> goodsList = goodsService.listGoodsVo();
        model.addAttribute("goodsList", goodsList);
//         return "goods_list";
        SpringWebContext ctx = new SpringWebContext(request,response,
                request.getServletContext(),request.getLocale(), model.asMap(), applicationContext );
        //手动渲染
        html = thymeleafViewResolver.getTemplateEngine().process("goods_list", ctx);
        if(!StringUtils.isEmpty(html)) {
            redisService.set(GoodsKey.getGoodsList, "", html);// 渲染成功更新缓存
        }
        return html;
    }

@RequestMapping(value="/to_detail2/{goodsId}",produces="text/html")
    @ResponseBody
    public String detail2(HttpServletRequest request, HttpServletResponse response, Model model,MiaoshaUser user,
            @PathVariable("goodsId")long goodsId) {
        model.addAttribute("user", user);
        
        //取缓存
        String html = redisService.get(GoodsKey.getGoodsDetail, ""+goodsId, String.class);
        if(!StringUtils.isEmpty(html)) {
            return html;
        }
        //手动渲染
        GoodsVo goods = goodsService.getGoodsVoByGoodsId(goodsId);
        model.addAttribute("goods", goods);
        
        long startAt = goods.getStartDate().getTime();
        long endAt = goods.getEndDate().getTime();
        long now = System.currentTimeMillis();
        
        int miaoshaStatus = 0;
        int remainSeconds = 0;
        if(now < startAt ) {//秒杀还没开始，倒计时
            miaoshaStatus = 0;
            remainSeconds = (int)((startAt - now )/1000);
        }else  if(now > endAt){//秒杀已经结束
            miaoshaStatus = 2;
            remainSeconds = -1;
        }else {//秒杀进行中
            miaoshaStatus = 1;
            remainSeconds = 0;
        }
        model.addAttribute("miaoshaStatus", miaoshaStatus);
        model.addAttribute("remainSeconds", remainSeconds);
//        return "goods_detail";
        
        SpringWebContext ctx = new SpringWebContext(request,response,
                request.getServletContext(),request.getLocale(), model.asMap(), applicationContext );
        html = thymeleafViewResolver.getTemplateEngine().process("goods_detail", ctx);
        if(!StringUtils.isEmpty(html)) {
            redisService.set(GoodsKey.getGoodsDetail, ""+goodsId, html);
        }
        return html;
    }