利用java、js或mysql计算高德地图中两坐标之间的距离

package amap; import java.text.DecimalFormat; import java.text.DecimalFormatSymbols; import java.util.Locale; /** * 存储经纬度坐标值的类，单位角度 * * @author jianggujin * */ public final class LngLat implements Cloneable { /** * 纬度 (垂直方向) */ public final double latitude; /** * 经度 (水平方向) */ public final double longitude; /** * 格式化 */ private static DecimalFormat format = new DecimalFormat("0.000000", new DecimalFormatSymbols(Locale.US)); /** * 使用传入的经纬度构造LatLng 对象，一对经纬度值代表地球上一个地点。 * * @param longitude * 地点的经度，在-180 与180 之间的double 型数值。 * @param latitude * 地点的纬度，在-90 与90 之间的double 型数值。 */ public LngLat(double longitude, double latitude) { this(longitude, latitude, true); } /** * 使用传入的经纬度构造LatLng 对象，一对经纬度值代表地球上一个地点 * * @param longitude * 地点的经度，在-180 与180 之间的double 型数值。 * * @param latitude * 地点的纬度，在-90 与90 之间的double 型数值。 * @param isCheck * 是否需要检查经纬度的合理性，建议填写true */ public LngLat(double longitude, double latitude, boolean isCheck) { if (isCheck) { if ((-180.0D <= longitude) && (longitude < 180.0D)) this.longitude = parse(longitude); else { throw new IllegalArgumentException("the longitude range [-180, 180]."); // this.longitude = parse(((longitude - 180.0D) % 360.0D + 360.0D) % // 360.0D - 180.0D); } if ((latitude < -90.0D) || (latitude > 90.0D)) { throw new IllegalArgumentException("the latitude range [-90, 90]."); } this.latitude = latitude; // this.latitude = parse(Math.max(-90.0D, Math.min(90.0D, latitude))); } else { this.latitude = latitude; this.longitude = longitude; } } /** * 解析 * * @param d * @return */ private static double parse(double d) { return Double.parseDouble(format.format(d)); } public LngLat clone() { return new LngLat(this.latitude, this.longitude); } @Override public int hashCode() { final int prime = 31; int result = 1; long temp; temp = Double.doubleToLongBits(latitude); result = prime * result + (int) (temp ^ (temp >>> 32)); temp = Double.doubleToLongBits(longitude); result = prime * result + (int) (temp ^ (temp >>> 32)); return result; } @Override public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; LngLat other = (LngLat) obj; if (Double.doubleToLongBits(latitude) != Double.doubleToLongBits(other.latitude)) return false; if (Double.doubleToLongBits(longitude) != Double.doubleToLongBits(other.longitude)) return false; return true; } public String toString() { return "lat/lng: (" + this.latitude + "," + this.longitude + ")"; } }

package amap; /** * 高德地图工具 * * @author jianggujin * */ public class AMapUtils { /** * 根据用户的起点和终点经纬度计算两点间距离，此距离为相对较短的距离，单位米。 * * @param start * 起点的坐标 * @param end * 终点的坐标 * @return */ public static double calculateLineDistance(LngLat start, LngLat end) { if ((start == null) || (end == null)) { throw new IllegalArgumentException("非法坐标值，不能为null"); } double d1 = 0.01745329251994329D; double d2 = start.longitude; double d3 = start.latitude; double d4 = end.longitude; double d5 = end.latitude; d2 *= d1; d3 *= d1; d4 *= d1; d5 *= d1; double d6 = Math.sin(d2); double d7 = Math.sin(d3); double d8 = Math.cos(d2); double d9 = Math.cos(d3); double d10 = Math.sin(d4); double d11 = Math.sin(d5); double d12 = Math.cos(d4); double d13 = Math.cos(d5); double[] arrayOfDouble1 = new double[3]; double[] arrayOfDouble2 = new double[3]; arrayOfDouble1[0] = (d9 * d8); arrayOfDouble1[1] = (d9 * d6); arrayOfDouble1[2] = d7; arrayOfDouble2[0] = (d13 * d12); arrayOfDouble2[1] = (d13 * d10); arrayOfDouble2[2] = d11; double d14 = Math.sqrt((arrayOfDouble1[0] - arrayOfDouble2[0]) * (arrayOfDouble1[0] - arrayOfDouble2[0]) + (arrayOfDouble1[1] - arrayOfDouble2[1]) * (arrayOfDouble1[1] - arrayOfDouble2[1]) + (arrayOfDouble1[2] - arrayOfDouble2[2]) * (arrayOfDouble1[2] - arrayOfDouble2[2])); return (Math.asin(d14 / 2.0D) * 12742001.579854401D); } }

package test; import org.junit.Test; import amap.AMapUtils; import amap.LngLat; public class AMapTest { @Test public void Test() { LngLat start = new LngLat(116.368904, 39.923423); LngLat end = new LngLat(116.387271, 39.922501); System.err.println(AMapUtils.calculateLineDistance(start, end)); } }

<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title></title> <script type="text/javascript" src="js/ajax.js"></script> <script> /** * 存储经纬度 * @param {Object} longitude * @param {Object} latitude */ function LngLat(longitude, latitude) { this.longitude = longitude; this.latitude = latitude; } function calculateLineDistance(start, end) { var d1 = 0.01745329251994329; var d2 = start.longitude; var d3 = start.latitude; var d4 = end.longitude; var d5 = end.latitude; d2 *= d1; d3 *= d1; d4 *= d1; d5 *= d1; var d6 = Math.sin(d2); var d7 = Math.sin(d3); var d8 = Math.cos(d2); var d9 = Math.cos(d3); var d10 = Math.sin(d4); var d11 = Math.sin(d5); var d12 = Math.cos(d4); var d13 = Math.cos(d5); var arrayOfDouble1 = []; var arrayOfDouble2 = []; arrayOfDouble1.push(d9 * d8); arrayOfDouble1.push(d9 * d6); arrayOfDouble1.push(d7); arrayOfDouble2.push(d13 * d12); arrayOfDouble2.push(d13 * d10); arrayOfDouble2.push(d11); var d14 = Math.sqrt((arrayOfDouble1[0] - arrayOfDouble2[0]) * (arrayOfDouble1[0] - arrayOfDouble2[0]) + (arrayOfDouble1[1] - arrayOfDouble2[1]) * (arrayOfDouble1[1] - arrayOfDouble2[1]) + (arrayOfDouble1[2] - arrayOfDouble2[2]) * (arrayOfDouble1[2] - arrayOfDouble2[2])); return(Math.asin(d14 / 2.0) * 12742001.579854401); } var start = new LngLat(116.368904, 39.923423); var end = new LngLat(116.387271, 39.922501); </script> </head> <body> <script> document.write(calculateLineDistance(start, end)); </script> </body> </html>

DELIMITER $$ CREATE FUNCTION `calculateLineDistance`(startLng double, startLat double, endLng double, endLat double) RETURNS double BEGIN declare d2 DOUBLE; declare d3 DOUBLE; declare d4 DOUBLE; declare d5 DOUBLE; declare d6 DOUBLE; declare d7 DOUBLE; declare d8 DOUBLE; declare d9 DOUBLE; declare d10 DOUBLE; declare d11 DOUBLE; declare d12 DOUBLE; declare d13 DOUBLE; declare d14 DOUBLE; declare arrayOfDouble10 DOUBLE; declare arrayOfDouble11 DOUBLE; declare arrayOfDouble12 DOUBLe; declare arrayOfDouble20 DOUBLE; declare arrayOfDouble21 DOUBLE; declare arrayOfDouble22 DOUBLE; set d2 = startLng * 0.01745329251994329; set d3 = startLat * 0.01745329251994329; set d4 = endLng * 0.01745329251994329; set d5 = endLat * 0.01745329251994329; set d6 = sin(d2); set d7 = sin(d3); set d8 = cos(d2); set d9 = cos(d3); set d10 = sin(d4); set d11 = sin(d5); set d12 = cos(d4); set d13 = cos(d5); set arrayOfDouble10 = (d9 * d8); set arrayOfDouble11 = (d9 * d6); set arrayOfDouble12 = d7; set arrayOfDouble20 = (d13 * d12); set arrayOfDouble21 = (d13 * d10); set arrayOfDouble22 = d11; set d14 = sqrt((arrayOfDouble10 - arrayOfDouble20) * (arrayOfDouble10 - arrayOfDouble20) + (arrayOfDouble11 - arrayOfDouble21) * (arrayOfDouble11 - arrayOfDouble21) + (arrayOfDouble12 - arrayOfDouble22) * (arrayOfDouble12 - arrayOfDouble22)); return (asin(d14 / 2.0) * 12742001.579854401); END $$ DELIMITER ;

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