wgs84转gcj02 java_WGS84，GCJ02， BD09坐标转换(java)
public class Gps {
private double wgLat;
private double wgLon;
public Gps(double wgLat, double wgLon) {
setWgLat(wgLat);
setWgLon(wgLon);
}
public double getWgLat() {
return wgLat;
}
public void setWgLat(double wgLat) {
this.wgLat = wgLat;
}
public double getWgLon() {
return wgLon;
}
public void setWgLon(double wgLon) {
this.wgLon = wgLon;
}
@Override
public String toString() {
return wgLat + "," + wgLon;
}
}
public class PositionUtil {
public static final String BAIDU_LBS_TYPE = "bd09ll";
public static double pi = 3.1415926535897932384626;
public static double a = 6378245.0;
public static double ee = 0.00669342162296594323;
public static Gps gps84_To_Gcj02(double lat, double lon) {
if (outOfChina(lat, lon)) {
return null;
}
double dLat = transformLat(lon - 105.0, lat - 35.0);
double dLon = transformLon(lon - 105.0, lat - 35.0);
double radLat = 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 = lat + dLat;
double mgLon = lon + dLon;
return new Gps(mgLat, mgLon);
}
public static Gps gcj_To_Gps84(double lat, double lon) {
Gps gps = transform(lat, lon);
double lontitude = lon * 2 - gps.getWgLon();
double latitude = lat * 2 - gps.getWgLat();
return new Gps(latitude, lontitude);
}
public static Gps gcj02_To_Bd09(double gg_lat, double gg_lon)
{
double x = gg_lon, y = gg_lat;
double z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y *
pi);
double theta = Math.atan2(y, x) + 0.000003 * Math.cos(x *
pi);
double bd_lon = z * Math.cos(theta) + 0.0065;
double bd_lat = z * Math.sin(theta) + 0.006;
return new Gps(bd_lat, bd_lon);
}
public static Gps bd09_To_Gcj02(double bd_lat, double bd_lon)
{
double x = bd_lon - 0.0065, y = bd_lat - 0.006;
double z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y *
pi);
double theta = Math.atan2(y, x) - 0.000003 * Math.cos(x *
pi);
double gg_lon = z * Math.cos(theta);
double gg_lat = z * Math.sin(theta);
return new Gps(gg_lat, gg_lon);
}
public static Gps bd09_To_Gps84(double bd_lat, double bd_lon)
{
Gps gcj02 = PositionUtil.bd09_To_Gcj02(bd_lat, bd_lon);
Gps map84 = PositionUtil.gcj_To_Gps84(gcj02.getWgLat(),
gcj02.getWgLon());
return map84;
}
public static boolean outOfChina(double lat, double lon) {
if (lon < 72.004 || lon >
137.8347)
return true;
if (lat < 0.8293 || lat >
55.8271)
return true;
return false;
}
public static Gps transform(double lat, double lon) {
if (outOfChina(lat, lon)) {
return new Gps(lat, lon);
}
double dLat = transformLat(lon - 105.0, lat - 35.0);
double dLon = transformLon(lon - 105.0, lat - 35.0);
double radLat = 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 = lat + dLat;
double mgLon = lon + dLon;
return new Gps(mgLat, mgLon);
}
public 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;
}
public 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;
}
public static void main(String[] args) {
// 北斗芯片获取的经纬度为WGS84地理坐标 31.426896,119.496145
Gps gps = new Gps(31.426896, 119.496145);
System.out.println("gps :" + gps);
Gps gcj = gps84_To_Gcj02(gps.getWgLat(), gps.getWgLon());
System.out.println("gcj :" + gcj);
Gps star = gcj_To_Gps84(gcj.getWgLat(), gcj.getWgLon());
System.out.println("star:" + star);
Gps bd = gcj02_To_Bd09(gcj.getWgLat(), gcj.getWgLon());
System.out.println("bd :" + bd);
Gps gcj2 = bd09_To_Gcj02(bd.getWgLat(), bd.getWgLon());
System.out.println("gcj :" + gcj2);
}
}