GPS经纬度坐标的转换

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wgs84:国家默认标准坐标

/gcj02:火星坐标

/bd09:百度坐标

转换方法:

<strong><span style="color:#ff6666;">Gps实体</span></strong>

public class Gps {public double wgLat;public 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;}@Overridepublic String toString() {return wgLat + "," + wgLon;}}

<strong><span style="color:#ff6666;">经纬度转换</span></strong>

public class PositionUtil {//转换火星坐标密钥public double pi = 3.1415926535897932384626;public double a = 6378245.0;public double ee = 0.00669342162296594323;/** * 84 to 火星坐标系 (GCJ-02) World Geodetic System ==> Mars Geodetic System *  * @param lat * @param lon * @return */public 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 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 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 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;}}

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