WGS84、GCJ02、BD09坐标系互转

前言

• WGS84、GCJ-02、BD09三大坐标系详解
  

以下坐标转换为 java 语言,其他编程语言自行 转换

---

各坐标系转换JAVA代码实现

package org.springblade.common.utils;

import java.util.ArrayList;
import java.util.List;

public class GpsCoordinateUtils {
	private static final double PI = 3.1415926535897932384626433832795;
	//    private static final double PI = 3.14159265358979324;
	private static final double A = 6378245.0;
	private static final double EE = 0.00669342162296594323;

	private static double EARTH_RADIUS = 6378.137;

	private static double rad(double d) {
		return d * Math.PI / 180.0;
	}

	/**
	 * 地球坐标系 WGS-84 to 火星坐标系 GCJ-02
	 *
	 * @param latitude  纬度
	 * @param longitude 经度
	 * @return [纬度, 经度]
	 */
	public static double[] calWGS84toGCJ02(double latitude, double longitude) {
		Point dev = calDev(latitude, longitude);
		double retLat = latitude + dev.getLatitude();
		double retLon = longitude + dev.getLongitude();
		return new double[]{retLat, retLon};
	}

	/**
	 * 地球坐标系 WGS-84 to 百度坐标系 BD-09
	 *
	 * @param latitude  纬度
	 * @param longitude 经度
	 * @return [纬度, 经度]
	 */
	public static double[] calWGS84toBD09(double latitude, double longitude) {
		Point dev = calDev(latitude, longitude);
		double retLat = latitude + dev.getLatitude();
		double retLon = longitude + dev.getLongitude();
		return calGCJ02toBD09(retLat, retLon);
	}

	/**
	 * 火星坐标系 GCJ-02 to 地球坐标系 WGS-84
	 *
	 * @param latitude  纬度
	 * @param longitude 经度
	 * @return [纬度, 经度]
	 */
	public static Double[] calGCJ02toWGS84(double latitude, double longitude) {
		Point dev = calDev(latitude, longitude);
		double retLat = latitude - dev.getLatitude();
		double retLon = longitude - dev.getLongitude();
		dev = calDev(retLat, retLon);
		retLat = latitude - dev.getLatitude();
		retLon = longitude - dev.getLongitude();
		return new Double[]{retLat, retLon};
	}

	/**
	 * 百度坐标系 BD-09 to 地球坐标系 WGS-84
	 *
	 * @param latitude  纬度
	 * @param longitude 经度
	 * @return [纬度, 经度]
	 */
	public static Double[] calBD09toWGS84(double latitude, double longitude) {
		Double[] gcj = calBD09toGCJ02(latitude, longitude);
		return calGCJ02toWGS84(gcj[0], gcj[1]);
	}

	private static Point calDev(double latitude, double longitude) {
		if (isOutOfChina(latitude, longitude, false)) {
			return new Point(latitude, latitude);
		}
		double dLat = calLat(longitude - 105.0, latitude - 35.0);
		double dLon = calLon(longitude - 105.0, latitude - 35.0);
		double radLat = latitude / 180.0 * PI;
		double magic = Math.sin(radLat);
		magic = 1 - EE * magic * magic;
		double sqrtMagic = Math.sqrt(magic);
		dLat = (dLat * 180.0) / ((A * (1 - EE)) / (magic * sqrtMagic) * PI);
		dLon = (dLon * 180.0) / (A / sqrtMagic * Math.cos(radLat) * PI);
		return new Point(dLat, dLon);
	}

	private static double calLat(double x, double y) {
		double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * Math.sqrt(Math.abs(x));
		ret += (20.0 * Math.sin(6.0 * x * PI) + 20.0 * Math.sin(2.0 * x * PI)) * 2.0 / 3.0;
		ret += (20.0 * Math.sin(y * PI) + 40.0 * Math.sin(y / 3.0 * PI)) * 2.0 / 3.0;
		ret += (160.0 * Math.sin(y / 12.0 * PI) + 320 * Math.sin(y * PI / 30.0)) * 2.0 / 3.0;
		return ret;
	}

	private static double calLon(double x, double y) {
		double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * Math.sqrt(Math.abs(x));
		ret += (20.0 * Math.sin(6.0 * x * PI) + 20.0 * Math.sin(2.0 * x * PI)) * 2.0 / 3.0;
		ret += (20.0 * Math.sin(x * PI) + 40.0 * Math.sin(x / 3.0 * PI)) * 2.0 / 3.0;
		ret += (150.0 * Math.sin(x / 12.0 * PI) + 300.0 * Math.sin(x / 30.0 * PI)) * 2.0 / 3.0;
		return ret;
	}

	/**
	 * 火星坐标系 GCJ-02 to 百度坐标系 BD-09
	 *
	 * @param latitude  纬度
	 * @param longitude 经度
	 * @return [纬度, 经度]
	 */
	public static double[] calGCJ02toBD09(double latitude, double longitude) {
		double x = longitude, y = latitude;
		double z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * PI);
		double theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * PI);
		double retLat = z * Math.sin(theta) + 0.006;
		double retLon = z * Math.cos(theta) + 0.0065;
		return new double[]{retLat, retLon};
	}

	/**
	 * 百度坐标系 BD-09 to 火星坐标系 GCJ-02
	 *
	 * @param latitude  纬度
	 * @param longitude 经度
	 * @return [纬度, 经度]
	 */
	public static Double[] calBD09toGCJ02(double latitude, double longitude) {
		double x = longitude - 0.0065, y = latitude - 0.006;
		double z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * PI);
		double theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * PI);
		double retLat = z * Math.sin(theta);
		double retLon = z * Math.cos(theta);
		return new Double[]{retLat, retLon};
	}

	/**
	 * 判断坐标是否在国内
	 *
	 * @param latitude
	 * @param longitude
	 * @param precision 是否精确判断范围
	 * @return true 在国外，false 在国内
	 */
	public static boolean isOutOfChina(double latitude, double longitude, boolean precision) {
		if (precision) {
			return CHINA_POLYGON.stream().noneMatch(point -> pointInPolygon(point, latitude, longitude));
		} else {
			if (longitude < 72.004 || longitude > 137.8347) {
				return true;
			}
			if (latitude < 0.8293 || latitude > 55.8271) {
				return true;
			}
			return false;
		}
	}

	/**
	 * 检查坐标点是否在多边形区域内
	 *
	 * @param polygon   多边形
	 * @param latitude  纬度
	 * @param longitude 经度
	 * @return true 在多边形区域内，false 在多边形区域外
	 */
	private static boolean pointInPolygon(Point[] polygon, double latitude, double longitude) {
		int i, j = polygon.length - 1;
		boolean oddNodes = false;
		for (i = 0; i < polygon.length; i++) {
			if ((polygon[i].getLatitude() < latitude && polygon[j].getLatitude() >= latitude
				|| polygon[j].getLatitude() < latitude && polygon[i].getLatitude() >= latitude)
				&& (polygon[i].getLongitude() <= longitude || polygon[j].getLongitude() <= longitude)) {
				if (polygon[i].getLongitude()
					+ (latitude - polygon[i].getLatitude()) / (polygon[j].getLatitude() - polygon[i].getLatitude())
					* (polygon[j].getLongitude() - polygon[i].getLongitude())
					< longitude) {
					oddNodes = !oddNodes;
				}
			}
			j = i;
		}
		return oddNodes;
	}
	/**
	 * 检查坐标点是否在多边形区域内
	 *
	 * @param polygon   多边形,[纬度,经度]
	 * @param latitude  纬度
	 * @param longitude 经度
	 * @return true 在多边形区域内，false 在多边形区域外
	 */
	public static boolean pointInPolygon(List<Double[]> polygon, double latitude, double longitude) {
		if(polygon == null) {
			System.out.println("kong");
		}
		Point[] points = new Point[polygon.size()];
		for (int i = 0; i < polygon.size(); i++) {
			Double[] doubles = polygon.get(i);
			Point point = new Point(doubles[0], doubles[1]);
			points[i] = point;
		}

		return pointInPolygon(points, latitude, longitude);
	}


	/**
	 * 通过经纬度获取距离(单位：米)
	 *
	 * @param lat1
	 * @param lng1
	 * @param lat2
	 * @param lng2
	 * @return
	 */
	public static double getDistance(double lat1, double lng1, double lat2, double lng2) {
		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;
	}

	static class Point {
		private double longitude;
		private double latitude;

		Point(double latitude, double longitude) {
			this.longitude = longitude;
			this.latitude = latitude;
		}

		public double getLongitude() {
			return longitude;
		}

		public void setLongitude(double longitude) {
			this.longitude = longitude;
		}

		public double getLatitude() {
			return latitude;
		}

		public void setLatitude(double latitude) {
			this.latitude = latitude;
		}

		@Override
		public String toString() {
			return longitude + "," + latitude;
		}
	}

	//region 中国行政边界的WGS84坐标数据
	//Mainland
	private static final Point[] MAINLAND = new Point[]{
		new Point(27.32083, 88.91693),
		new Point(27.54243, 88.76464),
		new Point(28.00805, 88.83575),
		new Point(28.1168, 88.62435),
		new Point(27.86605, 88.14279),
		new Point(27.82305, 87.19275),
		new Point(28.11166, 86.69527),
		new Point(27.90888, 86.45137),
		new Point(28.15805, 86.19769),
		new Point(27.88625, 86.0054),
		new Point(28.27916, 85.72137),
		new Point(28.30666, 85.11095),
		new Point(28.59104, 85.19518),
		new Point(28.54444, 84.84665),
		new Point(28.73402, 84.48623),
		new Point(29.26097, 84.11651),
		new Point(29.18902, 83.5479),
		new Point(29.63166, 83.19109),
		new Point(30.06923, 82.17525),
		new Point(30.33444, 82.11123),
		new Point(30.385, 81.42623),
		new Point(30.01194, 81.23221),
		new Point(30.20435, 81.02536),
		new Point(30.57552, 80.207),
		new Point(30.73374, 80.25423),
		new Point(30.96583, 79.86304),
		new Point(30.95708, 79.55429),
		new Point(31.43729, 79.08082),
		new Point(31.30895, 78.76825),
		new Point(31.96847, 78.77075),
		new Point(32.24304, 78.47594),
		new Point(32.5561, 78.40595),
		new Point(32.63902, 78.74623),
		new Point(32.35083, 78.9711),
		new Point(32.75666, 79.52874),
		new Point(33.09944, 79.37511),
		new Point(33.42863, 78.93623),
		new Point(33.52041, 78.81387),
		new Point(34.06833, 78.73581),
		new Point(34.35001, 78.98535),
		new Point(34.6118, 78.33707),
		new Point(35.28069, 78.02305),
		new Point(35.49902, 78.0718),
		new Point(35.50133, 77.82393),
		new Point(35.6125, 76.89526),
		new Point(35.90665, 76.55304),
		new Point(35.81458, 76.18061),
		new Point(36.07082, 75.92887),
		new Point(36.23751, 76.04166),
		new Point(36.66343, 75.85984),
		new Point(36.73169, 75.45179),
		new Point(36.91156, 75.39902),
		new Point(36.99719, 75.14787),
		new Point(37.02782, 74.56543),
		new Point(37.17, 74.39089),
		new Point(37.23733, 74.91574),
		new Point(37.40659, 75.18748),
		new Point(37.65243, 74.9036),
		new Point(38.47256, 74.85442),
		new Point(38.67438, 74.35471),
		new Point(38.61271, 73.81401),
		new Point(38.88653, 73.70818),
		new Point(38.97256, 73.85235),
		new Point(39.23569, 73.62005),
		new Point(39.45483, 73.65569),
		new Point(39.59965, 73.95471),
		new Point(39.76896, 73.8429),
		new Point(40.04202, 73.99096),
		new Point(40.32792, 74.88089),
		new Point(40.51723, 74.8588),
		new Point(40.45042, 75.23394),
		new Point(40.64452, 75.58284),
		new Point(40.298, 75.70374),
		new Point(40.35324, 76.3344),
		new Point(41.01258, 76.87067),
		new Point(41.04079, 78.08083),
		new Point(41.39286, 78.39554),
		new Point(42.03954, 80.24513),
		new Point(42.19622, 80.23402),
		new Point(42.63245, 80.15804),
		new Point(42.81565, 80.25796),
		new Point(42.88545, 80.57226),
		new Point(43.02906, 80.38405),
		new Point(43.1683, 80.81526),
		new Point(44.11378, 80.36887),
		new Point(44.6358, 80.38499),
		new Point(44.73408, 80.51589),
		new Point(44.90282, 79.87106),
		new Point(45.3497, 81.67928),
		new Point(45.15748, 81.94803),
		new Point(45.13303, 82.56638),
		new Point(45.43581, 82.64624),
		new Point(45.5831, 82.32179),
		new Point(47.20061, 83.03443),
		new Point(46.97332, 83.93026),
		new Point(46.99361, 84.67804),
		new Point(46.8277, 84.80318),
		new Point(47.0591, 85.52257),
		new Point(47.26221, 85.70139),
		new Point(47.93721, 85.53707),
		new Point(48.39333, 85.76596),
		new Point(48.54277, 86.59791),
		new Point(49.1102, 86.87602),
		new Point(49.09262, 87.34821),
		new Point(49.17295, 87.8407),
		new Point(48.98304, 87.89291),
		new Point(48.88103, 87.7611),
		new Point(48.73499, 88.05942),
		new Point(48.56541, 87.99194),
		new Point(48.40582, 88.51679),
		new Point(48.21193, 88.61179),
		new Point(47.99374, 89.08514),
		new Point(47.88791, 90.07096),
		new Point(46.95221, 90.9136),
		new Point(46.57735, 91.07027),
		new Point(46.29694, 90.92151),
		new Point(46.01735, 91.02651),
		new Point(45.57972, 90.68193),
		new Point(45.25305, 90.89694),
		new Point(45.07729, 91.56088),
		new Point(44.95721, 93.5547),
		new Point(44.35499, 94.71735),
		new Point(44.29416, 95.41061),
		new Point(44.01937, 95.34109),
		new Point(43.99311, 95.53339),
		new Point(43.28388, 95.87901),
		new Point(42.73499, 96.38206),
		new Point(42.79583, 97.1654),
		new Point(42.57194, 99.51012),
		new Point(42.67707, 100.8425),
		new Point(42.50972, 101.8147),
		new Point(42.23333, 102.0772),
		new Point(41.88721, 103.4164),
		new Point(41.87721, 104.5267),
		new Point(41.67068, 104.5237),
		new Point(41.58666, 105.0065),
		new Point(42.46624, 107.4758),
		new Point(42.42999, 109.3107),
		new Point(42.64576, 110.1064),
		new Point(43.31694, 110.9897),
		new Point(43.69221, 111.9583),
		new Point(44.37527, 111.4214),
		new Point(45.04944, 111.873),
		new Point(45.08055, 112.4272),
		new Point(44.8461, 112.853),
		new Point(44.74527, 113.638),
		new Point(45.38943, 114.5453),
		new Point(45.4586, 115.7019),
		new Point(45.72193, 116.2104),
		new Point(46.29583, 116.5855),
		new Point(46.41888, 117.3755),
		new Point(46.57069, 117.425),
		new Point(46.53645, 117.8455),
		new Point(46.73638, 118.3147),
		new Point(46.59895, 119.7068),
		new Point(46.71513, 119.9315),
		new Point(46.90221, 119.9225),
		new Point(47.66499, 119.125),
		new Point(47.99475, 118.5393),
		new Point(48.01125, 117.8046),
		new Point(47.65741, 117.3827),
		new Point(47.88805, 116.8747),
		new Point(47.87819, 116.2624),
		new Point(47.69186, 115.9231),
		new Point(47.91749, 115.5944),
		new Point(48.14353, 115.5491),
		new Point(48.25249, 115.8358),
		new Point(48.52055, 115.8111),
		new Point(49.83047, 116.7114),
		new Point(49.52058, 117.8747),
		new Point(49.92263, 118.5746),
		new Point(50.09631, 119.321),
		new Point(50.33028, 119.36),
		new Point(50.39027, 119.1386),
		new Point(51.62083, 120.0641),
		new Point(52.115, 120.7767),
		new Point(52.34423, 120.6259),
		new Point(52.54267, 120.7122),
		new Point(52.58805, 120.0819),
		new Point(52.76819, 120.0314),
		new Point(53.26374, 120.8307),
		new Point(53.54361, 123.6147),
		new Point(53.18832, 124.4933),
		new Point(53.05027, 125.62),
		new Point(52.8752, 125.6573),
		new Point(52.75722, 126.0968),
		new Point(52.5761, 125.9943),
		new Point(52.12694, 126.555),
		new Point(51.99437, 126.4412),
		new Point(51.38138, 126.9139),
		new Point(51.26555, 126.8176),
		new Point(51.31923, 126.9689),
		new Point(51.05825, 126.9331),
		new Point(50.74138, 127.2919),
		new Point(50.31472, 127.334),
		new Point(50.20856, 127.5861),
		new Point(49.80588, 127.515),
		new Point(49.58665, 127.838),
		new Point(49.58443, 128.7119),
		new Point(49.34676, 129.1118),
		new Point(49.4158, 129.4902),
		new Point(48.86464, 130.2246),
		new Point(48.86041, 130.674),
		new Point(48.60576, 130.5236),
		new Point(48.3268, 130.824),
		new Point(48.10839, 130.6598),
		new Point(47.68721, 130.9922),
		new Point(47.71027, 132.5211),
		new Point(48.09888, 133.0827),
		new Point(48.06888, 133.4843),
		new Point(48.39112, 134.4153),
		new Point(48.26713, 134.7408),
		new Point(47.99207, 134.5576),
		new Point(47.70027, 134.7608),
		new Point(47.32333, 134.1825),
		new Point(46.64017, 133.9977),
		new Point(46.47888, 133.8472),
		new Point(46.25363, 133.9016),
		new Point(45.82347, 133.4761),
		new Point(45.62458, 133.4702),
		new Point(45.45083, 133.1491),
		new Point(45.05694, 133.0253),
		new Point(45.34582, 131.8684),
		new Point(44.97388, 131.4691),
		new Point(44.83649, 130.953),
		new Point(44.05193, 131.298),
		new Point(43.53624, 131.1912),
		new Point(43.38958, 131.3104),
		new Point(42.91645, 131.1285),
		new Point(42.74485, 130.4327),
		new Point(42.42186, 130.6044),
		new Point(42.71416, 130.2468),
		new Point(42.88794, 130.2514),
		new Point(43.00457, 129.9046),
		new Point(42.43582, 129.6955),
		new Point(42.44624, 129.3493),
		new Point(42.02736, 128.9269),
		new Point(42.00124, 128.0566),
		new Point(41.58284, 128.3002),
		new Point(41.38124, 128.1529),
		new Point(41.47249, 127.2708),
		new Point(41.79222, 126.9047),
		new Point(41.61176, 126.5661),
		new Point(40.89694, 126.0118),
		new Point(40.47037, 124.8851),
		new Point(40.09362, 124.3736),
		new Point(39.82777, 124.128),
		new Point(39.8143, 123.2422),
		new Point(39.67388, 123.2167),
		new Point(38.99638, 121.648),
		new Point(38.8611, 121.6982),
		new Point(38.71909, 121.1873),
		new Point(38.91221, 121.0887),
		new Point(39.09013, 121.6794),
		new Point(39.2186, 121.5994),
		new Point(39.35166, 121.7511),
		new Point(39.52847, 121.2283),
		new Point(39.62322, 121.533),
		new Point(39.81138, 121.4683),
		new Point(40.00305, 121.881),
		new Point(40.50562, 122.2987),
		new Point(40.73874, 122.0521),
		new Point(40.92194, 121.1775),
		new Point(40.1961, 120.4468),
		new Point(39.87242, 119.5264),
		new Point(39.15693, 118.9715),
		new Point(39.04083, 118.3273),
		new Point(39.19846, 117.889),
		new Point(38.67555, 117.5364),
		new Point(38.38666, 117.6722),
		new Point(38.16721, 118.0281),
		new Point(38.1529, 118.8378),
		new Point(37.87832, 119.0355),
		new Point(37.30054, 118.9566),
		new Point(37.14361, 119.2328),
		new Point(37.15138, 119.7672),
		new Point(37.35228, 119.8529),
		new Point(37.83499, 120.7371),
		new Point(37.42458, 121.58),
		new Point(37.55256, 122.1282),
		new Point(37.41833, 122.1814),
		new Point(37.39624, 122.5586),
		new Point(37.20999, 122.5972),
		new Point(37.02583, 122.4005),
		new Point(37.01978, 122.5392),
		new Point(36.89361, 122.5047),
		new Point(36.84298, 122.1923),
		new Point(37.00027, 121.9566),
		new Point(36.75889, 121.5944),
		new Point(36.61666, 120.7764),
		new Point(36.52638, 120.96),
		new Point(36.37582, 120.8753),
		new Point(36.42277, 120.7062),
		new Point(36.14075, 120.6956),
		new Point(36.0419, 120.3436),
		new Point(36.26345, 120.3078),
		new Point(36.19998, 120.0889),
		new Point(35.95943, 120.2378),
		new Point(35.57893, 119.6475),
		new Point(34.88499, 119.1761),
		new Point(34.31145, 120.2487),
		new Point(32.97499, 120.8858),
		new Point(32.63889, 120.8375),
		new Point(32.42958, 121.3348),
		new Point(32.11333, 121.4412),
		new Point(32.02166, 121.7066),
		new Point(31.67833, 121.8275),
		new Point(31.86639, 120.9444),
		new Point(32.09361, 120.6019),
		new Point(31.94555, 120.099),
		new Point(32.30638, 119.8267),
		new Point(32.26277, 119.6317),
		new Point(31.90388, 120.1364),
		new Point(31.98833, 120.7026),
		new Point(31.81944, 120.7196),
		new Point(31.30889, 121.6681),
		new Point(30.97986, 121.8828),
		new Point(30.85305, 121.8469),
		new Point(30.56889, 120.9915),
		new Point(30.33555, 120.8144),
		new Point(30.39298, 120.4586),
		new Point(30.19694, 120.15),
		new Point(30.31027, 120.5082),
		new Point(30.06465, 120.7916),
		new Point(30.30458, 121.2808),
		new Point(29.96305, 121.6778),
		new Point(29.88211, 122.1196),
		new Point(29.51167, 121.4483),
		new Point(29.58916, 121.9744),
		new Point(29.19527, 121.9336),
		new Point(29.18388, 121.8119),
		new Point(29.37236, 121.7969),
		new Point(29.19729, 121.7444),
		new Point(29.29111, 121.5611),
		new Point(29.1634, 121.4135),
		new Point(29.02194, 121.6914),
		new Point(28.9359, 121.4908),
		new Point(28.72798, 121.6113),
		new Point(28.84215, 121.1464),
		new Point(28.66993, 121.4844),
		new Point(28.34722, 121.6417),
		new Point(28.13889, 121.3419),
		new Point(28.38277, 121.1651),
		new Point(27.98222, 120.9353),
		new Point(28.07944, 120.5908),
		new Point(27.87229, 120.84),
		new Point(27.59319, 120.5812),
		new Point(27.45083, 120.6655),
		new Point(27.20777, 120.5075),
		new Point(27.28278, 120.1896),
		new Point(27.14764, 120.4211),
		new Point(26.89805, 120.0332),
		new Point(26.64465, 120.128),
		new Point(26.51778, 119.8603),
		new Point(26.78823, 120.0733),
		new Point(26.64888, 119.8668),
		new Point(26.79611, 119.7879),
		new Point(26.75625, 119.5503),
		new Point(26.44222, 119.8204),
		new Point(26.47388, 119.5775),
		new Point(26.33861, 119.658),
		new Point(26.36777, 119.9489),
		new Point(25.99694, 119.4253),
		new Point(26.14041, 119.0975),
		new Point(25.93788, 119.354),
		new Point(25.99069, 119.7058),
		new Point(25.67996, 119.5807),
		new Point(25.68222, 119.4522),
		new Point(25.35333, 119.6454),
		new Point(25.60649, 119.3149),
		new Point(25.42097, 119.1053),
		new Point(25.25319, 119.3526),
		new Point(25.17208, 119.2726),
		new Point(25.2426, 118.8749),
		new Point(24.97194, 118.9866),
		new Point(24.88291, 118.5729),
		new Point(24.75673, 118.7631),
		new Point(24.52861, 118.5953),
		new Point(24.53638, 118.2397),
		new Point(24.68194, 118.1688),
		new Point(24.44024, 118.0199),
		new Point(24.46019, 117.7947),
		new Point(24.25875, 118.1237),
		new Point(23.62437, 117.1957),
		new Point(23.65919, 116.9179),
		new Point(23.355, 116.7603),
		new Point(23.42024, 116.5322),
		new Point(23.23666, 116.7871),
		new Point(23.21083, 116.5139),
		new Point(22.93902, 116.4817),
		new Point(22.73916, 115.7978),
		new Point(22.88416, 115.6403),
		new Point(22.65889, 115.5367),
		new Point(22.80833, 115.1614),
		new Point(22.70277, 114.8889),
		new Point(22.53305, 114.8722),
		new Point(22.64027, 114.718),
		new Point(22.81402, 114.7782),
		new Point(22.69972, 114.5208),
		new Point(22.50423, 114.6136),
		new Point(22.55004, 114.2223),
		new Point(22.42993, 114.3885),
		new Point(22.26056, 114.2961),
		new Point(22.36736, 113.9056),
		new Point(22.50874, 114.0337),
		new Point(22.47444, 113.8608),
		new Point(22.83458, 113.606),
		new Point(23.05027, 113.5253),
		new Point(23.11724, 113.8219),
		new Point(23.05083, 113.4793),
		new Point(22.87986, 113.3629),
		new Point(22.54944, 113.5648),
		new Point(22.18701, 113.5527),
		new Point(22.56701, 113.1687),
		new Point(22.17965, 113.3868),
		new Point(22.04069, 113.2226),
		new Point(22.20485, 113.0848),
		new Point(21.8693, 112.94),
		new Point(21.96472, 112.824),
		new Point(21.70139, 112.2819),
		new Point(21.91611, 111.8921),
		new Point(21.75139, 111.9669),
		new Point(21.77819, 111.6762),
		new Point(21.61264, 111.7832),
		new Point(21.5268, 111.644),
		new Point(21.52528, 111.0285),
		new Point(21.21138, 110.5328),
		new Point(21.37322, 110.3944),
		new Point(20.84381, 110.1594),
		new Point(20.84083, 110.3755),
		new Point(20.64, 110.3239),
		new Point(20.48618, 110.5274),
		new Point(20.24611, 110.2789),
		new Point(20.2336, 109.9244),
		new Point(20.4318, 110.0069),
		new Point(20.92416, 109.6629),
		new Point(21.44694, 109.9411),
		new Point(21.50569, 109.6605),
		new Point(21.72333, 109.5733),
		new Point(21.49499, 109.5344),
		new Point(21.39666, 109.1428),
		new Point(21.58305, 109.1375),
		new Point(21.61611, 108.911),
		new Point(21.79889, 108.8702),
		new Point(21.59888, 108.7403),
		new Point(21.93562, 108.4692),
		new Point(21.59014, 108.5125),
		new Point(21.68999, 108.3336),
		new Point(21.51444, 108.2447),
		new Point(21.54241, 107.99),
		new Point(21.66694, 107.7831),
		new Point(21.60526, 107.3627),
		new Point(22.03083, 106.6933),
		new Point(22.45682, 106.5517),
		new Point(22.76389, 106.7875),
		new Point(22.86694, 106.7029),
		new Point(22.91253, 105.8771),
		new Point(23.32416, 105.3587),
		new Point(23.18027, 104.9075),
		new Point(22.81805, 104.7319),
		new Point(22.6875, 104.3747),
		new Point(22.79812, 104.1113),
		new Point(22.50387, 103.9687),
		new Point(22.78287, 103.6538),
		new Point(22.58436, 103.5224),
		new Point(22.79451, 103.3337),
		new Point(22.43652, 103.0304),
		new Point(22.77187, 102.4744),
		new Point(22.39629, 102.1407),
		new Point(22.49777, 101.7415),
		new Point(22.20916, 101.5744),
		new Point(21.83444, 101.7653),
		new Point(21.14451, 101.786),
		new Point(21.17687, 101.2919),
		new Point(21.57264, 101.1482),
		new Point(21.76903, 101.099),
		new Point(21.47694, 100.6397),
		new Point(21.43546, 100.2057),
		new Point(21.72555, 99.97763),
		new Point(22.05018, 99.95741),
		new Point(22.15592, 99.16785),
		new Point(22.93659, 99.56484),
		new Point(23.08204, 99.5113),
		new Point(23.18916, 98.92747),
		new Point(23.97076, 98.67991),
		new Point(24.16007, 98.89073),
		new Point(23.92999, 97.54762),
		new Point(24.26055, 97.7593),
		new Point(24.47666, 97.54305),
		new Point(24.73992, 97.55255),
		new Point(25.61527, 98.19109),
		new Point(25.56944, 98.36137),
		new Point(25.85597, 98.7104),
		new Point(26.12527, 98.56944),
		new Point(26.18472, 98.73109),
		new Point(26.79166, 98.77777),
		new Point(27.52972, 98.69699),
		new Point(27.6725, 98.45888),
		new Point(27.54014, 98.31992),
		new Point(28.14889, 98.14499),
		new Point(28.54652, 97.55887),
		new Point(28.22277, 97.34888),
		new Point(28.46749, 96.65387),
		new Point(28.35111, 96.40193),
		new Point(28.525, 96.34027),
		new Point(28.79569, 96.61373),
		new Point(29.05666, 96.47083),
		new Point(28.90138, 96.17532),
		new Point(29.05972, 96.14888),
		new Point(29.25757, 96.39172),
		new Point(29.46444, 96.08315),
		new Point(29.03527, 95.38777),
		new Point(29.33346, 94.64751),
		new Point(29.07348, 94.23456),
		new Point(28.6692, 93.96172),
		new Point(28.61876, 93.35194),
		new Point(28.3193, 93.22205),
		new Point(28.1419, 92.71044),
		new Point(27.86194, 92.54498),
		new Point(27.76472, 91.65776),
		new Point(27.945, 91.66277),
		new Point(28.08111, 91.30138),
		new Point(27.96999, 91.08693),
		new Point(28.07958, 90.3765),
		new Point(28.24257, 90.38898),
		new Point(28.32369, 89.99819),
		new Point(28.05777, 89.48749),
		new Point(27.32083, 88.91693)
	};

	//Taiwan
	private static final Point[] TAIWAN = new Point[]{
		new Point(25.13474, 121.4441),
		new Point(25.28361, 121.5632),
		new Point(25.00722, 122.0004),
		new Point(24.85028, 121.8182),
		new Point(24.47638, 121.8397),
		new Point(23.0875, 121.3556),
		new Point(21.92791, 120.7196),
		new Point(22.31277, 120.6103),
		new Point(22.54044, 120.3071),
		new Point(23.04437, 120.0539),
		new Point(23.61708, 120.1112),
		new Point(25.00166, 121.0017),
		new Point(25.13474, 121.4441)
	};

	//Hainan
	private static final Point[] HAINAN = new Point[]{
		new Point(19.52888, 110.855),
		new Point(19.16761, 110.4832),
		new Point(18.80083, 110.5255),
		new Point(18.3852, 110.0503),
		new Point(18.39152, 109.7594),
		new Point(18.19777, 109.7036),
		new Point(18.50562, 108.6871),
		new Point(19.28028, 108.6283),
		new Point(19.76, 109.2939),
		new Point(19.7236, 109.1653),
		new Point(19.89972, 109.2572),
		new Point(19.82861, 109.4658),
		new Point(19.99389, 109.6108),
		new Point(20.13361, 110.6655),
		new Point(19.97861, 110.9425),
		new Point(19.63829, 111.0215),
		new Point(19.52888, 110.855)
	};

	//Chongming
	private static final Point[] CHONGMING = new Point[]{
		new Point(31.80054, 121.2039),
		new Point(31.49972, 121.8736),
		new Point(31.53111, 121.5464),
		new Point(31.80054, 121.2039)
	};
	//endregion

	/**
	 * 中国行政边界的WGS84坐标数据，
	 * 光线投射算法 (Ray casting algorithm) 获得，
	 * 沿海、国界周边地区可能会有误差，更高精度需要调整坐标点
	 */
	private static final List<Point[]> CHINA_POLYGON = new ArrayList<>();

	static {
		CHINA_POLYGON.add(MAINLAND);
		CHINA_POLYGON.add(TAIWAN);
		CHINA_POLYGON.add(HAINAN);
		CHINA_POLYGON.add(CHONGMING);
	}


	public static void main(String[] args) {
		long startTime = System.currentTimeMillis();

		// 构建多边形
		List<Double[]> list = new ArrayList<Double[]>();
		Double[] p1 = new Double[]{21.818604,112.105748};
		Double[] p2 = new Double[]{21.818564,112.111541};
		Double[] p3 = new Double[]{21.816707,112.111745};
		Double[] p4 = new Double[]{21.816428,112.110023};
		Double[] p5 = new Double[]{21.816577,112.106703};
		list.add(p1);
		list.add(p2);
		list.add(p3);
		list.add(p4);
		list.add(p5);

		// 1、判断坐标点是否在多边形内
		Double[] p7 = new Double[]{29.834002,107.002065};
		System.out.println(pointInPolygon(list, p7[0], p7[1]));
		// 2、10W次调用耗时测试
		for (int i = 0; i < 100000; i++) {
			// 点与多边形匹配
			pointInPolygon(list, p7[0], p7[1]);
		}
		long endTime = System.currentTimeMillis();
		System.out.println("耗时：" + (endTime - startTime) + " 毫秒");
	}
}

---

总结

如果此篇文章有帮助到您, 希望打大佬们能关注、点赞、收藏、评论支持一波，非常感谢大家！
如果有不对的地方请指正!!!