59 lines
2.0 KiB
Java
59 lines
2.0 KiB
Java
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package com.multictrl.common.utils;
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import org.locationtech.spatial4j.context.SpatialContext;
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import org.locationtech.spatial4j.distance.DistanceUtils;
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import org.locationtech.spatial4j.shape.Point;
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import org.locationtech.spatial4j.shape.impl.PointImpl;
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/**
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* 地理空间工具
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*
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* @author Sdy
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* @since 1.0.0 2026/5/6
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*/
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public class Spatial4jUtils {
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// 使用 WGS84 坐标系（地球经纬度）
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private static final SpatialContext ctx = SpatialContext.GEO;
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/**
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* 计算两个经纬度点之间的球面距离（单位：米）
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*
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* @param lat1 第一个点纬度
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* @param lon1 第一个点经度
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* @param lat2 第二个点纬度
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* @param lon2 第二个点经度
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* @return 距离，单位：米
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*/
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public static double distance(double lat1, double lon1, double lat2, double lon2) {
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Point p1 = new PointImpl(lon1, lat1, ctx);
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Point p2 = new PointImpl(lon2, lat2, ctx);
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return distance(p1, p2);
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}
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/**
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* 如果你已经有 Point 对象，可以直接传入计算
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*/
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public static double distance(Point p1, Point p2) {
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// 计算两点之间的角度
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double distanceRad = ctx.getDistCalc().distance(p1, p2);
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// 使用地球平均半径（公里）转为米（弧度*半径）
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return DistanceUtils.degrees2Dist(distanceRad, DistanceUtils.EARTH_MEAN_RADIUS_KM * 1000);
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}
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public static double distance(String lat1Str, String lon1Str, String lat2Str, String lon2Str) {
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try {
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double lat1 = Double.parseDouble(lat1Str);
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double lon1 = Double.parseDouble(lon1Str);
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double lat2 = Double.parseDouble(lat2Str);
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double lon2 = Double.parseDouble(lon2Str);
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return distance(lat1, lon1, lat2, lon2);
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} catch (NumberFormatException e) {
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System.err.println("Invalid input: " + e.getMessage());
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return 0; // 或抛出异常 throw new IllegalArgumentException("Invalid coordinate format", e);
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}
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}
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}
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