java 经纬度的距离计算工具包

项目需求计算个人距离门店的公里数。
看网上一个是通过第三方依赖，一个是拿经纬度自己算。

在此留存一下工具包

public class LocationUtils {
    
    private static double EARTH_RADIUS = 6378.137;

    private static double rad(double d) {
        return d * Math.PI / 180.0;
    }

    
    public static double getDistance(String origin, String destination) {
        if (origin == null) {
            DrpLog.get().error("出发点 经纬度不可以为空！");
            return 0;
        }
        if (destination == null) {
            DrpLog.get().error("目的地 经纬度不可以为空！");
            return 0;
        }
        String[] temp = origin.split(",");
        String[] temp2 = destination.split(",");

        double radLat1 = rad(Double.parseDouble(temp[1]));
        double radLat2 = rad(Double.parseDouble(temp2[1]));
        double a = radLat1 - radLat2;
        double b = rad(Double.parseDouble(temp[0])) - rad(Double.parseDouble(temp2[0]));
        double s = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(a / 2), 2)
                + Math.cos(radLat1) * Math.cos(radLat2)
                * Math.pow(Math.sin(b / 2), 2)));
        s = s * EARTH_RADIUS;
        // 保留两位小数
        s = Math.round(s * 100d) / 100d;
        s = s * 1000;
        return s;
    }

    
    public static Integer getDistance(String originLon, String originLat, String destinationLon, String destinationLat) {

        double radLat1 = rad(Double.parseDouble(originLat));
        double radLat2 = rad(Double.parseDouble(destinationLat));
        double a = radLat1 - radLat2;
        double b = rad(Double.parseDouble(originLon)) - rad(Double.parseDouble(destinationLon));
        double s = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(a / 2), 2)
                + Math.cos(radLat1) * Math.cos(radLat2)
                * Math.pow(Math.sin(b / 2), 2)));
        s = s * EARTH_RADIUS;
        // 保留两位小数
        s = Math.round(s * 100d) / 100d;
        s = s * 1000;
        return new Double(s).intValue();
    }
}