复制代码 代码如下:

/**

* 计算两点之间距离

* @param _lat1 - start纬度

* @param _lon1 - start经度

* @param _lat2 - end纬度

* @param _lon2 - end经度

* @return km(四舍五入)

*/

public static double getDistance(double _lat1,double _lon1, double _lat2,double _lon2){

double lat1 = (Math.PI/180)*_lat1;

double lat2 = (Math.PI/180)*_lat2;

double lon1 = (Math.PI/180)*_lon1;

double lon2 = (Math.PI/180)*_lon2;

//地球半径

double R = 6378.1;

double d = Math.acos(Math.sin(lat1)*Math.sin(lat2)+Math.cos(lat1)*Math.cos(lat2)*Math.cos(lon2-lon1))*R;

return new BigDecimal(d).setScale(4,BigDecimal.ROUND_HALF_UP).doubleValue();

}

public static void main(String[] args) {

System.out.println(getDistance(45.73990, 126.55893,45.73876, 126.55037));

}