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 ;