获取两个坐标点间的距离

        private static double EARTH_RADIUS = 6378.137;private static double rad(double d){return d * Math.PI / 180.0;}/*** 获取两个坐标点之间的距离* @param lat1 起点经度* @param lng1 起点维度* @param lat2 终点经度* @param lng2 终点维度* @return*/public static double getDistance(double lat1, double lng1, double lat2, double lng2){double radLat1 = rad(lat1);double radLat2 = rad(lat2);double a = radLat1 - radLat2;double b = rad(lng1) - rad(lng2);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;s = Math.round(s * 10000) / 10000;return s;}