package com.oying.modules.sh.utils;
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/**
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* @author xin
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* @description 地球经纬度
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* @date 2025/9/27 23:15
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*/
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public class DistanceCalculator {
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public static void main(String[] args) {
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// 测试数据：纽约和洛杉矶的坐标
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double lat1 = 40.7128, lon1 = -74.0060; // 纽约坐标
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double lat2 = 34.0522, lon2 = -118.2437; // 洛杉矶坐标
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double distance = calculateHaversineDistance(lat1, lon1, lat2, lon2);
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System.out.printf("距离: %s 公里%n", distance); // 保留两位小数
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}
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// 使用Haversine公式计算球面距离
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public static double calculateHaversineDistance(double lat1, double lon1, double lat2, double lon2) {
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final int R = 6371; // 地球半径（单位：公里）
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// 将经纬度转换为弧度
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double latDistance = Math.toRadians(lat2 - lat1);
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double lonDistance = Math.toRadians(lon2 - lon1);
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double a = Math.sin(latDistance / 2) * Math.sin(latDistance / 2)
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+ Math.cos(Math.toRadians(lat1)) * Math.cos(Math.toRadians(lat2))
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* Math.sin(lonDistance / 2) * Math.sin(lonDistance / 2);
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double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
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double distance = R * c; // 原始距离值
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// 返回距离（公里）四舍五入保留两位小数
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return Math.round(distance * 100.0) / 100.0;
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}
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}
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