代码

/** * 坐标转换* */public class Coordtransform { private static double x_PI = 3.14159265358979324 * 3000.0 / 180.0; private static double PI = 3.1415926535897932384626; private static double a = 6378245.0; private static double ee = 0.00669342162296594323; /** * 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 * @return Double[lon,lat] */public static Double[] BD09ToGCJ02(Double bd_lon,Double bd_lat){ 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[] arr = new Double[2]; arr[0] = z * Math.cos(theta); arr[1] = z * Math.sin(theta); return arr; } /** * 火星坐标系 (GCJ-02) 与百度坐标系 (BD-09) 的转换 * 即谷歌、高德 转 百度* @param gcj_lon * @param gcj_lat * @return Double[lon,lat] */ public static Double[] GCJ02ToBD09(Double gcj_lon,Double gcj_lat){ double z = Math.sqrt(gcj_lon * gcj_lon + gcj_lat * gcj_lat) + 0.00002 * Math.sin(gcj_lat * x_PI); double theta = Math.atan2(gcj_lat, gcj_lon) + 0.000003 * Math.cos(gcj_lon * x_PI); Double[] arr = new Double[2]; arr[0] = z * Math.cos(theta) + 0.0065; arr[1] = z * Math.sin(theta) + 0.006; return arr; } /** * WGS84转GCJ02 * @param wgs_lon * @param wgs_lat * @return Double[lon,lat] */ public static Double[] WGS84ToGCJ02(Double wgs_lon,Double wgs_lat){ if(outOfChina(wgs_lon, wgs_lat)){ return new Double[]{wgs_lon,wgs_lat}; } double dlat = transformlat(wgs_lon - 105.0, wgs_lat - 35.0); double dlng = transformlng(wgs_lon - 105.0, wgs_lat - 35.0); double radlat = wgs_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); dlng = (dlng * 180.0) / (a / sqrtmagic * Math.cos(radlat) * PI); Double[] arr = new Double[2]; arr[0] = wgs_lon + dlng; arr[1] = wgs_lat + dlat; return arr; } /** * GCJ02转WGS84 * @param gcj_lon * @param gcj_lat * @return Double[lon,lat] */ public static Double[] GCJ02ToWGS84(Double gcj_lon,Double gcj_lat){ if(outOfChina(gcj_lon, gcj_lat)){ return new Double[]{gcj_lon,gcj_lat}; } double dlat = transformlat(gcj_lon - 105.0, gcj_lat - 35.0); double dlng = transformlng(gcj_lon - 105.0, gcj_lat - 35.0); double radlat = gcj_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); dlng = (dlng * 180.0) / (a / sqrtmagic * Math.cos(radlat) * PI); double mglat = gcj_lat + dlat; double mglng = gcj_lon + dlng; return new Double[]{gcj_lon * 2 - mglng, gcj_lat * 2 - mglat}; } private static Double transformlat(double lng, double lat) { double ret = -100.0 + 2.0 * lng + 3.0 * lat + 0.2 * lat * lat + 0.1 * lng * lat + 0.2 * Math.sqrt(Math.abs(lng)); ret += (20.0 * Math.sin(6.0 * lng * PI) + 20.0 * Math.sin(2.0 * lng * PI)) * 2.0 / 3.0; ret += (20.0 * Math.sin(lat * PI) + 40.0 * Math.sin(lat / 3.0 * PI)) * 2.0 / 3.0; ret += (160.0 * Math.sin(lat / 12.0 * PI) + 320 * Math.sin(lat * PI / 30.0)) * 2.0 / 3.0; return ret; } private static Double transformlng(double lng,double lat) { double ret = 300.0 + lng + 2.0 * lat + 0.1 * lng * lng + 0.1 * lng * lat + 0.1 * Math.sqrt(Math.abs(lng)); ret += (20.0 * Math.sin(6.0 * lng * PI) + 20.0 * Math.sin(2.0 * lng * PI)) * 2.0 / 3.0; ret += (20.0 * Math.sin(lng * PI) + 40.0 * Math.sin(lng / 3.0 * PI)) * 2.0 / 3.0; ret += (150.0 * Math.sin(lng / 12.0 * PI) + 300.0 * Math.sin(lng / 30.0 * PI)) * 2.0 / 3.0; return ret; } /** * outOfChina * @描述: 判断是否在国内，不在国内则不做偏移* @param lng * @param lat * @return {boolean} */ private static boolean outOfChina(Double lng,Double lat) { return (lng < 72.004 || lng > 137.8347) || ((lat < 0.8293 || lat > 55.8271) || false); };}

源码地址

gitHub:https://github.com/wandergis/coordtransform