JAVA 根据经纬度算出附近的正方形的四个角的经纬度

　　/**
     * 
     * @param longitude    经度
     * @param latitude    纬度
     * @param distance    范围（米）
     * @return
     */
    public static Map<String, double[]> returnLLSquarePoint(double longitude,  double latitude, double distance) {
        Map<String, double[]> squareMap = new HashMap<String, double[]>();
        // 计算经度弧度,从弧度转换为角度
        double dLongitude = 2 * (Math.asin(Math.sin(distance
                / (2 * 6378137))
                / Math.cos(Math.toRadians(latitude))));
        dLongitude = Math.toDegrees(dLongitude);
        // 计算纬度角度
        double dLatitude = distance / 6378137;
        dLatitude = Math.toDegrees(dLatitude);
        // 正方形
        double[] leftTopPoint = { latitude + dLatitude, longitude - dLongitude };
        double[] rightTopPoint = { latitude + dLatitude, longitude + dLongitude };
        double[] leftBottomPoint = { latitude - dLatitude,
                longitude - dLongitude };
        double[] rightBottomPoint = { latitude - dLatitude,
                longitude + dLongitude };
        squareMap.put("leftTopPoint", leftTopPoint);
        squareMap.put("rightTopPoint", rightTopPoint);
        squareMap.put("leftBottomPoint", leftBottomPoint);
        squareMap.put("rightBottomPoint", rightBottomPoint);
        System.out.println("leftTop："+leftTopPoint[0]+"======"+leftTopPoint[1]);
        System.out.println("rightTop："+rightTopPoint[0]+"======"+rightTopPoint[1]);
        System.out.println("leftBottom："+leftBottomPoint[0]+"======"+leftBottomPoint[1]);
        System.out.println("rightBottom："+rightBottomPoint[0]+"======"+rightBottomPoint[1]);
        return squareMap;
    }