geo 距离计算

/**
 * @ClassName UserShopDistanceDemo
 * @Desciption 用户与商家的距离计算距离
 * @Author MaRui
 * @Date 2021/8/30 19:28
 * @Version 1.0
 */
public class UserShopDistanceDemo {

    private static Jedis jedis = new Jedis("127.0.0.1", 6379);

    public static void main(String[] args) {
        UserShopDistanceDemo demo = new UserShopDistanceDemo();
        demo.addLocation("张三", 116.49428, 39.86700);
        demo.addLocation("店铺", 116.459612, 39.85717);
        double distance = demo.getDistance("张三", "店铺");
        System.out.println("张三到店铺的距离：" + distance + " km");
    }

    /**
     * 添加一个地理位置
     * @param name
     * @param lontitude
     * @param latitude
     */
    public void addLocation(String name, double lontitude, double latitude) {
        jedis.geoadd("location_data", lontitude, latitude, name);
    }

    /**
     * 获取用户到商家的位置
     * @param user
     * @param shop
     * @return
     */
    public double getDistance(String user, String shop) {
        return jedis.geodist("location_data", user, shop, GeoUnit.KM);
    }
}