根据地图的坐标计算出两点之间的距离 java

 

public class Distribution
{
    // 经度
    double longitude;
    // 维度
    double dimensionality;
    public double getLongitude()
    {
        return longitude;
    }
    public void setLongitude(double longitude)
    {
        this.longitude = longitude;
    }
    public double getDimensionality()
    {
        return dimensionality;
    }
    public void setDimensionality(double dimensionality)
    {
        this.dimensionality = dimensionality;
    }
    /*

 * 计算两点之间距离
 * 
 * @param start
 * 
 * @param end
 * 
 * @return 米
 */
public double getDistance(Distribution start, Distribution end)
{
    double lon1 = (Math.PI / 180) * start.longitude;
    double lon2 = (Math.PI / 180) * end.longitude;
    double lat1 = (Math.PI / 180) * start.dimensionality;
    double lat2 = (Math.PI / 180) * end.dimensionality;
    // double Lat1r = (Math.PI/180)*(gp1.getLatitudeE6()/1E6);
    // double Lat2r = (Math.PI/180)*(gp2.getLatitudeE6()/1E6);
    // double Lon1r = (Math.PI/180)*(gp1.getLongitudeE6()/1E6);
    // double Lon2r = (Math.PI/180)*(gp2.getLongitudeE6()/1E6);
    // 地球半径
    double R = 6371;
    // 两点间距离 km，如果想要米的话，结果*1000就可以了
    double d = Math.acos(Math.sin(lat1) * Math.sin(lat2) + Math.cos(lat1) * Math.cos(lat2) * Math.cos(lon2 - lon1)) * R;
    return d * 1000;
}

}