public class Distance
{
private static final double EARTH_RADIUS = 6378137;
private static double rad(double d)
{
return d * Math.PI / 180.0;
}
/**
* 根据两点间经纬度坐标（double值），计算两点间距离，单位为米
* @param lng1
* @param lat1
* @param lng2
* @param lat2
* @return
*/
public static double GetDistance(double lng1, double lat1, double lng2, double lat2)
{
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 * 10000) / 10000;
return s;
}
/**
* @param args
*/
public static void main(String[] args)
{
// TODO 自动生成方法存根
double distance = GetDistance(121.491909,31.233234,121.411994,31.206134);
System.out.println("Distance is:"+distance);
}
{ private static final double EARTH_RADIUS = 6378137; private static double rad(double d) { return d * Math.PI / 180.0; } /** * 根据两点间经纬度坐标（double值），计算两点间距离，单位为米 * @param lng1 * @param lat1 * @param lng2 * @param lat2 * @return */ public static double GetDistance(double lng1, double lat1, double lng2, double lat2) { 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 * 10000) / 10000; return s; } /** * @param args */ public static void main(String[] args) { // TODO 自动生成方法存根 double distance = GetDistance(121.491909,31.233234,121.411994,31.206134); System.out.println("Distance is:"+distance); }
}
转至:http://blog.163.com/yuck_deng/blog/static/19501514720118132513641/