高德经纬度转换百度经纬度方式，sql,java,js,GO

-- lon 120.609017
SELECT (SQRT(120.602600 * 120.602600 + 31.210440 * 31.210440) + 0.00002 * SIN(31.210440 * PI() * 3000.0 / 180.0)) * 
        COS(ATAN2(31.210440,120.602600)  + 0.000003 * COS(120.602600 * PI() * 3000.0 / 180.0)) + 0.0065 AS aa

-- lat 31.216801
SELECT (SQRT(120.602600 * 120.602600 + 31.210440 * 31.210440) + 0.00002 * SIN(31.210440 * PI() * 3000.0 / 180.0)) * 
       SIN(ATAN2(31.210440,120.602600)  + 0.000003 * COS(120.602600 * PI() * 3000.0 / 180.0)) + 0.006 AS aa
       

export function bd_encrypt(gg_lng, gg_lat) {
  var X_PI = Math.PI * 3000.0 / 180.0;
  var x = gg_lng, y = gg_lat;
  var z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * X_PI);
  var theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * X_PI);
  var bd_lng = z * Math.cos(theta) + 0.0065;
  var bd_lat = z * Math.sin(theta) + 0.006;
  return {
    lat: bd_lat,
    lng: bd_lng
  };
}

func BdEncrypt(ggLng float64, ggLat float64) (float64,float64) {
	var X_PI = math.Pi * 3000.0 / 180.0
	var x = ggLng
	var y = ggLat

	var z = math.Sqrt(x*x + y*y) + 0.00002 * math.Sin(y * X_PI)
	var theta = math.Atan2(y, x) + 0.000003 * math.Cos(x * X_PI)
	var bdLng = z * math.Cos(theta) + 0.0065
	var bdLat = z * math.Sin(theta) + 0.006
	return bdLng, bdLat
}