redis的hash结构

package com.hmdp.service.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.map.MapUtil;
import cn.hutool.core.util.StrUtil;
import cn.hutool.json.JSONUtil;
import com.hmdp.dto.Result;
import com.hmdp.entity.ShopType;
import com.hmdp.mapper.ShopTypeMapper;
import com.hmdp.service.IShopTypeService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * <p>
 *  服务实现类
 * </p>
 *
 * @author 虎哥
 * @since 2021-12-22
 */
@Service
public class ShopTypeServiceImpl extends ServiceImpl<ShopTypeMapper, ShopType> implements IShopTypeService {

    @Resource
    private StringRedisTemplate stringRedisTemplate;

    @Override
    public Result queryTypeList() {
        String key = "shop:all:";
        Map<Object, Object> entries = stringRedisTemplate.opsForHash().entries(key);
        if (!entries.isEmpty()) {
            // 如果Redis中有数据，则直接返回
            List<ShopType> list = new ArrayList<>();
            for (Map.Entry<Object, Object> entry : entries.entrySet()) {
                // 将Map中的值转换为ShopType对象并添加到列表中
                list.add(JSONUtil.toBean((String) entry.getValue(), ShopType.class));
            }
            System.out.println(1111111111);
            return Result.ok(list);
        } else {
            // 如果Redis中没有数据，则进行数据库查询
            List<ShopType> sort = query().orderByAsc("sort").list();
            if (sort == null || sort.isEmpty()) {
                return Result.fail("未查询到数据");
            } else {
                // 将查询到的数据存入Redis，并返回
                Map<String, String> map = new HashMap<>();
                for (ShopType shopType : sort) {
                    map.put(shopType.getId().toString(), JSONUtil.toJsonStr(shopType));
                }
                stringRedisTemplate.opsForHash().putAll(key, map);
                System.out.println(2222222);
                return Result.ok(sort);
            }
        }
    }

}
2.

@Override
public Result queryTypeList() {
    //获取radis中商户
    String shopType=stringRedisTemplate.opsForValue().get("shopType");
    if (StrUtil.isNotBlank(shopType)) {
        //存在，直接返回
        List<ShopType> shopTypes = JSONUtil.toList(shopType, ShopType.class);
        return Result.ok(shopTypes);
    }
    //不存在，从数据库中查询写入redis
    List<ShopType> shopTypes = query().orderByAsc("sort").list();
    //不存在，返回错误
    if (shopTypes == null) {
        return Result.fail("分类不存在");
    }
    //将查询到的信息存入radis
    stringRedisTemplate.opsForValue().set("shopType",JSONUtil.toJsonStr(shopTypes));
    //返回
    return Result.ok(shopTypes);

}