Java - 计算两个经纬度之间的直线距离

Java - 计算两个经纬度之间的直线距离

代码Github地址
https://github.com/FrankZuozuo/JavaSpecial

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1.点接口

public interface Point {

    double x();
    double y();
}

2.地图点

@NoArgsConstructor
@AllArgsConstructor
public class MapPoint implements Point{

    private double latitude,longitude;


    @Override
    public double x() {
        return latitude;
    }

    @Override
    public double y() {
        return longitude;
    }
}

3.计算工具类

public class MapUtils {

    private static final double EARTH_RADIUS = 637_1393.00D;
    private static final double RADIAN = Math.PI / 180.00D;
    private static final double HALF = 0.5D;


    /**
     * 比如
     * point1 30，120
     * point2 31，121
     * 两点之间距离为146784.74米，约146.78公里
     *
     * @param point1 坐标点1
     * @param point2 坐标点2
     * @return 返回double 类型的距离，向上进行四舍五入，距离精确到厘米，单位为米
     */
    public static double distanceOf(Point point1, Point point2) {
        double lat1 = point1.x();
        double lon1 = point1.y();
        double lat2 = point2.x();
        double lon2 = point2.y();
        double x, y, a, b, distance;

        lat1 *= RADIAN;
        lat2 *= RADIAN;
        x = lat1 - lat2;
        y = lon1 - lon2;
        y *= RADIAN;
        a = Math.sin(x * HALF);
        b = Math.sin(y * HALF);
        distance = EARTH_RADIUS * Math.asin(Math.sqrt(a * a + Math.cos(lat1) * Math.cos(lat2) * b * b)) / HALF;

        return new BigDecimal(distance).setScale(2, BigDecimal.ROUND_HALF_UP).doubleValue();
    }

    public static void main(String[] args) {


        Point point1 = new MapPoint(30, 120);
        Point point2 = new MapPoint(31, 121);

        Print.echo(distanceOf(point1, point2));


    }


}