贴代码如下:
package com.qcsd.xulin.util; import java.awt.*; /** * @author xulin * @date create in 9:06 2018/11/1 * Description 根据提供的两个国标经纬度,计算两个点之间的距离 */ public class DistanceConsider { // 地球半径 private static double EARTH_RADIUS = 6378.137; private static double rad(double d) { return d * Math.PI / 180.0; } /** * @author xulin * date 9:09 2018/11/1 * Description 计算距离 * 参数传入:所在位置的坐标 目标位置的坐标 * 一个参数的经纬之前要求使用","英文的逗号进行分隔 * 返回: 输入的两个坐标点之间的距离 精确到小数点后两位 */ public static double getDistance(String location, String target) { int locationCount = location.indexOf(","); // 源地点的经度 double lngLocation = Double.parseDouble(location.substring(0, locationCount)); // 源地点的维度 double latLocation = Double.parseDouble(location.substring(locationCount + 1, location.length())); int targetCount = target.indexOf(","); // 目标地点的经度 double lngTarget = Double.parseDouble(target.substring(0, targetCount)); // 目标地点的维度 double latTarget = Double.parseDouble(target.substring(targetCount + 1, target.length())); double lat1 = rad(latLocation); double lat2 = rad(latTarget); double lat = lat1 - lat2; double lng = rad(lngLocation) - rad(lngTarget); double distance = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(lat / 2), 2) + Math.cos(lat1) * Math.cos(lat2) * Math.pow(Math.sin(lng / 2), 2))); distance = distance * EARTH_RADIUS; distance = Math.round(distance * 10000d) / 10000d; distance = distance * 1000; return distance; } public static void main(String args[]) { String location = "116.368904, 39.923423"; String target = "116.387271, 39.922501"; System.out.println(getDistance(location, target)); } }
刚开始一直计算错误,是自己没有区分经纬度,地理是硬伤,谷歌的公式是对的,网上的大部分方法也是对的, 如果计算之后发现了较大的误差,记得查看经纬度是否计算反了,避免低级错误~~~~