MySQL的插入数据；百度地图的坐标转换

记一次MySQL的插入数据 结合百度地图的坐标转换

using MySql.Data.MySqlClient;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    class Program
    {
        static double x_PI = 3.14159265358979324 * 3000.0 / 180.0;
        static double PI = 3.1415926535897932384626;
        static double a = 6378245.0;
        static double ee = 0.00669342162296594323;

        static void Main(string[] args)
        {
            double lat= 13529822.18, lon= 3644519.8;
            string connstr = "Server=10.14.3.137;Uid=root;Pwd=20190416;Database=test";
            using (MySqlConnection conn = new MySqlConnection(connstr)) {
                try{
                    conn.Open();
                    Console.Write("数据库连接成功" + "\n");
                    MySqlDataAdapter adapter = new MySqlDataAdapter("select id,gcj02_lat,gcj02_lon,wgs84_lat,wgs84_lon from steps", conn);
                    DataSet ds = new DataSet();
                    adapter.Fill(ds, "steps_table");
                    Console.Write("数据获取成功" + "\n");
                    DataTable mytable = ds.Tables["steps_table"];
                    Point point = null;

                    foreach (DataRow myRow in mytable.Rows)
                    {
                        lat = System.Convert.ToDouble(myRow["gcj02_lat"].ToString());
                        lon = System.Convert.ToDouble(myRow["gcj02_lon"].ToString());
                        point = new Point(lat,lon);
                        //获取数据接口 
                        //string Url = "http://api.map.baidu.com/geoconv/v1/?coords=" + lat + "," + lon + "&from=6&to=5&ak=8dho8FFgHmpa0pP0FgMTk17TrGVl5jaf";
                        //string result = HttpGet(Url);
                        //JObject jo = (JObject)JsonConvert.DeserializeObject(result);

                        //string bd_lat = jo["result"][0]["x"].ToString();
                        //string bd_lon = jo["result"][0]["y"].ToString();

                        point = gcj02_To_Gps84(point);
                        lat = point.lat;
                        lon= point.lng;
                        myRow["wgs84_lat"] = Convert.ToString(lat);
                        myRow["wgs84_lon"] = Convert.ToString(lon);


                    }

                    MySqlCommandBuilder mySqlCommandBuilder = new MySqlCommandBuilder(adapter);
                    //更新数据
                    adapter.Update(ds, "steps_table");
                    Console.Write(mytable.TableName + "\n");
                    Console.Write("数据更新成功" + "\n");

                }
                catch (MySqlException ex)
                {
                    Console.Write(ex.ToString());

                }
                finally
                {
                    conn.Close();
                }
            }
          
            Console.ReadKey();
        }

        //获取坐标转换数据
        public static string HttpGet(string Url)
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);
            request.Method = "GET";
            request.ContentType = "text/html;charset=UTF-8";

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            Stream myResponseStream = response.GetResponseStream();
            StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
            string retString = myStreamReader.ReadToEnd();
            myStreamReader.Close();
            myResponseStream.Close();

            return retString;
        }

        /**
         * 百度坐标系 (BD-09) 与 火星坐标系 (GCJ-02)的转换
         * 即 百度 转 谷歌、高德
         * @param bd_lon
         * @param bd_lat
         * @returns {*[]}
         */
        public static Point bd09togcj02( double bd_lat,double bd_lon)
        {
            double x = bd_lon - 0.0065;
            double y = bd_lat - 0.006;
            double z = Math.Sqrt(x * x + y * y) - 0.00002 * Math.Sin(y * x_PI);
            double theta = Math.Atan2(y, x) - 0.000003 * Math.Cos(x * x_PI);
            double gg_lng = z * Math.Cos(theta);
            double gg_lat = z * Math.Sin(theta);
            Point point = new Point(gg_lat, gg_lng);
            return point;
        }

        static double transformLat(double x, double y)
        {
            double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y
                    + 0.2 * Math.Sqrt(Math.Abs(x));
            ret += (20.0 * Math.Sin(6.0 * x * PI) + 20.0 * Math.Sin(2.0 * x * PI)) * 2.0 / 3.0;
            ret += (20.0 * Math.Sin(y * PI) + 40.0 * Math.Sin(y / 3.0 * PI)) * 2.0 / 3.0;
            ret += (160.0 * Math.Sin(y / 12.0 * PI) + 320 * Math.Sin(y * PI / 30.0)) * 2.0 / 3.0;
            return ret;
        }

        static double transformLon(double x, double y)
        {
            double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1
                    * Math.Sqrt(Math.Abs(x));
            ret += (20.0 * Math.Sin(6.0 * x * PI) + 20.0 * Math.Sin(2.0 * x * PI)) * 2.0 / 3.0;
            ret += (20.0 * Math.Sin(x * PI) + 40.0 * Math.Sin(x / 3.0 * PI)) * 2.0 / 3.0;
            ret += (150.0 * Math.Sin(x / 12.0 * PI) + 300.0 * Math.Sin(x / 30.0
                    * PI)) * 2.0 / 3.0;
            return ret;
        }

        static Point transform(Point Gpoint)
        {
            
            double dLat = transformLat(Gpoint.lng - 105.0, Gpoint.lat - 35.0);
            double dLon = transformLon(Gpoint.lng - 105.0, Gpoint.lat - 35.0);
            double radLat = Gpoint.lat / 180.0 * PI;
            double magic = Math.Sin(radLat);
            magic = 1 - ee * magic * magic;
            double sqrtMagic = Math.Sqrt(magic);
            dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * PI);
            dLon = (dLon * 180.0) / (a / sqrtMagic * Math.Cos(radLat) * PI);
            double mgLat = Gpoint.lat + dLat;
            double mgLon = Gpoint.lng + dLon;
            return new Point(mgLat, mgLon);
        }

        /** 
         ** 火星坐标系 (GCJ-02) to 84 * * @param lon * @param lat * @return 
        **/
        public static Point gcj02_To_Gps84(Point Gpoint)
        {
            Point gps = transform(Gpoint);
            double lontitude = Gpoint.lng * 2 - gps.lng;
            double latitude = Gpoint.lat * 2 - gps.lat;
            return new Point(latitude, lontitude);
        }

        public class Point
        {
            public double lat;
            public double lng;

            public Point(double lat,double lng) {
                this.lat = lat;
                this.lng = lng;
            }
        }
    }
}