1 package order.utils;
2
3 import java.math.BigDecimal;
4 import java.util.HashMap;
5 import java.util.Map;
6
7 public class MapUtils {
8 /*GCJ-02(火星坐标) 和 BD-09 （百度坐标）
9 * 算法代码如下，其中 bd_encrypt 将 GCJ-02 坐标转换成 BD-09 坐标， bd_decrypt 反之。
10 */
11 static double x_pi = 3.14159265358979324 * 3000.0 / 180.0;
12 public static void main(String[] args) {
13 // --高德 119.254356 26.080030
14 // --百度 119.260989 26.086051
15 bdEncrypt(26.061317,119.276413);
16 // 119.2608552145561
17 // 26.086114589896383
18 }
19 //高德转百度
20 public static Map<String,Float> bdEncrypt(double gg_lat, double gg_lon){
21 Map<String,Float> data = new HashMap<String,Float>();
22 double x = gg_lon, y = gg_lat;
23 double z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * x_pi);
24 double theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * x_pi);
25 double bd_lon = z * Math.cos(theta) + 0.0065;
26 double bd_lat = z * Math.sin(theta) + 0.006;
27 System.out.println(bd_lon+","+bd_lat);
28 System.out.println(new BigDecimal(String.valueOf(bd_lon)).floatValue()+","+new BigDecimal(String.valueOf(bd_lat)).floatValue());
29 data.put("lon", new BigDecimal(String.valueOf(bd_lon)).floatValue());
30 data.put("lat",new BigDecimal(String.valueOf(bd_lat)).floatValue());
31 return data;
32 }
33
34 public static Map<String,Double> bd_decrypt(double bd_lat, double bd_lon){
35 double x = bd_lon - 0.0065, y = bd_lat - 0.006;
36 double z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * x_pi);
37 double theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * x_pi);
38 double gg_lon = z * Math.cos(theta);
39 double gg_lat = z * Math.sin(theta);
40 Map<String,Double> data = new HashMap<String,Double>();
41 data.put("lon", gg_lon);
42 data.put("lat", gg_lat);
43 return data;
44 }
45 }
