package com.ruoyi.system.utils;
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/**
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* 高德地图的地理编码工具类
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*/
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public class GDMapGeocodingUtil {
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/**
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* 地球半径，单位m
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*/
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private static final double EARTH_RADIUS = 6371000;
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private static double rad(double d) {
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return d * Math.PI / 180.0;
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}
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/**
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* @param lon1 第一点的精度
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* @param lat1 第一点的纬度
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* @param lon2 第二点的精度
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* @param lat2 第二点的纬度
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* @return 返回的距离，单位m
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* */
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public static double getDistance(double lon1,double lat1,double lon2, double lat2) {
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double radLat1 = rad(lat1);
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double radLat2 = rad(lat2);
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double a = radLat1 - radLat2;
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double b = rad(lon1) - rad(lon2);
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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)));
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s = s * EARTH_RADIUS;
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s = Math.round(s * 10000) / 10000;
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return s;
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}
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public static void main(String[] args) {
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System.err.println(getDistance(104.165799,30.586865,104.155819,31.585843));
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}
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}
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