使用redis实现搜索历史

要求：

　　1.限制搜索历史的个数

　　2.大于三十天清除历史纪录

　　3.最多5条历史纪录

 

代码：

　　第一部分：查询接口

　　

    @PostMapping("/getAiResults")
    @SneakyThrows
    public AjaxResult uploadFile(@RequestParam("file") MultipartFile file) throws Exception {
        try {
            String encode = Base64.encode(file.getBytes());
            ImageRequest imageRequest = new ImageRequest();
            imageRequest.setImage(encode);
            String result = EasydlImageClassify.easydlImageClassify(imageRequest);
            AiResponseEntity jsonObject = JSONUtil.toBean(result, AiResponseEntity.class);

            HashMap<String, InsectEntity> dataMap = new HashMap<String, InsectEntity>();

            List<InsectEntity> results = jsonObject.getResults();
            results.forEach(item -> {
                InsectEntity ins = dataMap.get(item.getName());
                if (ins != null) {
                    dataMap.put(item.getName(), item.getScore() > ins.getScore() ? item : ins);
                } else {
                    dataMap.put(item.getName(), item);
                }
            });
            Set<String> strings = dataMap.keySet();
            ArrayList<InsectEntity> insectEntities = new ArrayList<>();
            strings.forEach(item -> {
                insectEntities.add(dataMap.get(item));
            });
            insectEntities.forEach(item -> {
                SituationArchivesPests one = situationArchivesPestsService.getOne(Wrappers.lambdaQuery(SituationArchivesPests.class)
                        .eq(SituationArchivesPests::getInsectName, item.getName()));
                item.setPests(one);
                // ==============================核心代码
                String key = RedisKeyPrefix.农情快讯搜索.getKey() + SecurityUtils.getLoginUser().getUser().getUserId();
                redisTemplate.expire(key, 30, TimeUnit.DAYS);
//                if (one!=null){
                redisTemplate.opsForList().leftPush(key, JSONUtil.toJsonStr(item));
                Long size = redisTemplate.opsForList().size(key);
                if (size > 10) {
                    redisTemplate.opsForList().rightPop(key);
                }
//                }
                //===============================核心代码

            });
            return AjaxResult.success(insectEntities);
        } catch (Exception e) {
            return AjaxResult.error(e.getMessage());
        }
    }

　　　　第一部分：获取历史

    @GetMapping(value = "/serarchHistory")
    @ApiOperation("识虫历史记录")
    public AjaxResult serarchHistory() {
        String key = RedisKeyPrefix.识虫历史记录.getKey() + SecurityUtils.getLoginUser().getUser().getUserId();
        Long size = redisTemplate.opsForList().size(key);
        List<String> range = redisTemplate.opsForList().range(key, 0, size - 1);
        return AjaxResult.success(range);