/**
* by llf
*/
public class GoogleMapHelper {
private static double EARTH_RADIUS = 6378.137; //地球半径
//将用角度表示的角转换为近似相等的用弧度表示的角 Math.toRadians
private static double rad(double d)
{
return d * Math.PI / 180.0;
}
/**
* 谷歌地图计算两个坐标点的距离
* @param lng1 经度1
* @param lat1 纬度1
* @param lng2 经度2
* @param lat2 纬度2
* @return 距离(米)
*/
public static double getDistance(double lng1, double lat1, double lng2, double lat2)
{
double radLat1 = Math.toRadians(lat1);
double radLat2 = Math.toRadians(lat2);
double a = radLat1 - radLat2;
double b = Math.toRadians(lng1) - Math.toRadians(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 * 1000);
return s;
}
public static void main(String[] args) {
// 北湖十六峯 114.51074,36.668875
// 邯郸信息工程学校 114.506859,36.664793
double dist1 = getDistance(114.51074,36.668875, 114.506859,36.664793) ;
System.out.println("两点相距:" + dist1 + "米");
}
}
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