package com.application.util;/*** 地图坐标距离计算**/public class LocationUtils {private static double EARTH_RADIUS = 6378.137;private static double rad(double d) {return d * Math.PI / 180.0;}/*** 通过经纬度获取距离(单位：米) 误差：多十米* @param lng1 经度1* @param lat1 纬度1* @param lng2 经度2* @param lat2 纬度2* @return*/public static double getDistance(double lng1, double lat1, double lng2,double lat2) {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 * 10000d) / 10000d;s = s*1000;return s;}public static void main(String[] args){double lng1 = 116.434395;double lat1 = 39.862268;double lng2 = 116.434651;double lat2 = 39.862542;double distance = getDistance(lng1,lat1,lng2,lat2);System.out.println("distanc:"+distance);}}
