@SpringBootTest
class HmDianPingApplicationTests {
 
    @Autowired
    private ShopServiceImpl shopService;
 
    @Autowired
    private StringRedisTemplate stringRedisTemplate;
 
    @Test
    public void loadShopData(){
        // 1、查詢店鋪信息
        List<Shop> list = shopService.list();
        // 2、把店鋪分組，按照 typeId 分組，typeId 一致的放到一個(gè)集合中
        Map<Long, List<Shop>> map = list.stream().collect(Collectors.groupingBy(Shop::getTypeId));
        // 3、分批完成寫(xiě)入 Redis
        for (Map.Entry<Long, List<Shop>> longListEntry : map.entrySet()) {
            Long typeId = longListEntry.getKey();
            List<Shop> value = longListEntry.getValue();
            List<RedisGeoCommands.GeoLocation<String>> locations = new ArrayList<>(value.size());
            for (Shop shop : value) {
                locations.add(new RedisGeoCommands.GeoLocation<>(
                        shop.getId().toString(),
                        new Point(shop.getX(), shop.getY())
                ));
            }
            stringRedisTemplate.opsForGeo().add(RedisConstants.SHOP_GEO_KEY + typeId, locations);
        }
 
    }
}

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
    <exclusions>
        <exclusion>
            <artifactId>spring-data-redis</artifactId>
            <groupId>org.springframework.data</groupId>
        </exclusion>
        <exclusion>
            <artifactId>lettuce-core</artifactId>
            <groupId>io.lettuce</groupId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>org.springframework.data</groupId>
    <artifactId>spring-data-redis</artifactId>
    <version>2.6.2</version>
</dependency>
<dependency>
    <groupId>io.lettuce</groupId>
    <artifactId>lettuce-core</artifactId>
    <version>6.1.6.RELEASE</version>
</dependency>

@RestController
@RequestMapping("/shop")
public class ShopController {
 
    @Resource
    public IShopService shopService;
 
	/**
     * 根據(jù)商鋪類型分頁(yè)查詢商鋪信息
     * @param typeId 商鋪類型
     * @param current 頁(yè)碼
     * @return 商鋪列表
     */
    @GetMapping("/of/type")
    public Result queryShopByType(
            @RequestParam("typeId") Integer typeId,
            @RequestParam(value = "current", defaultValue = "1") Integer current,
            @RequestParam(value = "x", required = false) Double x,
            @RequestParam(value = "y", required = false) Double y
    ) {
        return shopService.queryShopByType(typeId, current, x, y);
    }
}

@Service
public class ShopServiceImpl extends ServiceImpl<ShopMapper, Shop> implements IShopService {
 
    @Autowired
    private StringRedisTemplate stringRedisTemplate;
 
	@Override
    public Result queryShopByType(Integer typeId, Integer current, Double x, Double y) {
        // 判斷是否需要根據(jù)坐標(biāo)查詢
        if(x == null || y == null){
            // 根據(jù)類型分頁(yè)查詢
            Page<Shop> page = query()
                    .eq("type_id", typeId)
                    .page(new Page<>(current, SystemConstants.DEFAULT_PAGE_SIZE));
            // 返回?cái)?shù)據(jù)
            return Result.ok(page.getRecords());
        }
        // 計(jì)算分頁(yè)參數(shù)
        int from = (current - 1) * SystemConstants.DEFAULT_PAGE_SIZE;
        int end = current * SystemConstants.DEFAULT_PAGE_SIZE;
 
        // 查詢 Redis，按照距離排序、分頁(yè)。
        GeoResults<RedisGeoCommands.GeoLocation<String>> search = stringRedisTemplate.opsForGeo().
                search(RedisConstants.SHOP_GEO_KEY + typeId,
                        GeoReference.fromCoordinate(x, y),
                        new Distance(5000),
                        RedisGeoCommands.GeoSearchCommandArgs.newGeoSearchArgs().includeDistance().limit(end));
 
        if(search == null){
            return Result.ok(Collections.emptyList());
        }
 
        // 查詢 Redis，按照距離排序、分頁(yè)
        List<GeoResult<RedisGeoCommands.GeoLocation<String>>> content = search.getContent();
        if(from >= content.size()){
            return Result.ok(Collections.emptyList());
        }
 
        List<Long> ids = new ArrayList<>(content.size());
        Map<String, Distance> distanceMap = new HashMap<>(content.size());
        // 截取 from ~ end 的部分
        content.stream().skip(from).forEach(result -> {
            // 獲取店鋪 id
            String shopIdStr = result.getContent().getName();
            ids.add(Long.valueOf(shopIdStr));
            // 獲取距離
            Distance distance = result.getDistance();
            distanceMap.put(shopIdStr, distance);
        });
        String join = StrUtil.join(",", ids);
        // 根據(jù) id 查詢 shop
        List<Shop> shopList = query().in("id", ids).last("order by field(" + join + ")").list();
 
        for (Shop shop : shopList) {
           shop.setDistance(distanceMap.get(shop.getId().toString()).getValue());
        }
        
        return Result.ok(shopList);
    }
}