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				package com.yihu.jw.care.util; 
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				import com.alibaba.fastjson.JSONObject; 
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				import org.springframework.stereotype.Component; 
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				/** 
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				 * * 坐标转换工具类 
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				 *  * WGS84: Google Earth采用,Google Map中国范围外使用 
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				 *  * GCJ02: 火星坐标系,中国国家测绘局制定的坐标系统,由WGS84机密后的坐标。Google Map中国和搜搜地图使用,高德 
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				 *  * BD09:百度坐标,GCJ02机密后的坐标系 
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				 * 
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				 * Created by Bing on 2021/5/8. 
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				 */ 
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				@Component 
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				public class GpsUtil { 
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				    public static final String BAIDU_LBS_TYPE = "bd09ll"; 
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				    public static double pi = 3.1415926535897932384626; 
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				    public static double a = 6378245.0; 
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				    public static double ee = 0.00669342162296594323; 
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				    /** 
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				     * 84 to 火星坐标系 (GCJ-02) World Geodetic System ==> Mars Geodetic System 
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				     * @param lat 
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				     * @param lon 
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				     */ 
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				    public  JSONObject gps84_To_Gcj02(double lat, double lon) { 
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				        if (outOfChina(lat, lon)) { 
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				            return null; 
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				        } 
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				        double dLat = transformLat(lon - 105.0, lat - 35.0); 
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				        double dLon = transformLon(lon - 105.0, lat - 35.0); 
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				        double radLat = lat / 180.0 * pi; 
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				        double magic = Math.sin(radLat); 
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				        magic = 1 - ee * magic * magic; 
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				        double sqrtMagic = Math.sqrt(magic); 
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				        dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi); 
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				        dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi); 
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				        double mgLat = lat + dLat; 
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				        double mgLon = lon + dLon; 
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				        return getPosition(mgLat, mgLon); 
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				    } 
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				    /** 
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				     * * 火星坐标系 (GCJ-02) to 84 * * @param lon * @param lat * @return 
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				     */ 
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				    public  JSONObject gcj_To_Gps84(double lat, double lon) { 
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				        JSONObject gps = transform(lat, lon); 
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				        double lontitude = lon * 2 - gps.getDouble("lon"); 
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				        double latitude = lat * 2 - gps.getDouble("lat"); 
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				        return getPosition(latitude, lontitude); 
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				    } 
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				    /** 
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				     * 火星坐标系 (GCJ-02) 与百度坐标系 (BD-09) 的转换算法 将 GCJ-02 坐标转换成 BD-09 坐标 
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				     * 
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				     * @param gg_lat 
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				     * @param gg_lon 
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				     */ 
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				    public  JSONObject gcj02_To_Bd09(double gg_lat, double gg_lon) { 
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				        double x = gg_lon, y = gg_lat; 
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				        double z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * pi); 
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				        double theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * pi); 
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				        double bd_lon = z * Math.cos(theta) + 0.0065; 
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				        double bd_lat = z * Math.sin(theta) + 0.006; 
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				        return getPosition(bd_lat, bd_lon); 
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				    } 
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				    /** 
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				     * * 火星坐标系 (GCJ-02) 与百度坐标系 (BD-09) 的转换算法 * * 将 BD-09 坐标转换成GCJ-02 坐标 * * @param 
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				     * bd_lat * @param bd_lon * @return 
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				     */ 
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				    public  JSONObject bd09_To_Gcj02(double bd_lat, double bd_lon) { 
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				        double x = bd_lon - 0.0065, y = bd_lat - 0.006; 
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				        double z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * pi); 
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				        double theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * pi); 
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				        double gg_lon = z * Math.cos(theta); 
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				        double gg_lat = z * Math.sin(theta); 
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				        return getPosition(gg_lat, gg_lon); 
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				    } 
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				    /** 
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				     * (BD-09)-->84 
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				     * @param bd_lat 
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				     * @param bd_lon 
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				     * @return 
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				     */ 
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				    public  JSONObject bd09_To_Gps84(double bd_lat, double bd_lon) { 
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				        JSONObject gcj02 = bd09_To_Gcj02(bd_lat, bd_lon); 
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				        JSONObject map84 = gcj_To_Gps84(gcj02.getDouble("lat"), 
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				                gcj02.getDouble("lon")); 
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				        return map84; 
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				    } 
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				    /** 
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				     * is or not outOfChina 
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				     * @param lat 
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				     * @param lon 
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				     * @return 
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				     */ 
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				    public  boolean outOfChina(double lat, double lon) { 
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				        if (lon < 72.004 || lon > 137.8347) 
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				            return true; 
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				        if (lat < 0.8293 || lat > 55.8271) 
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				            return true; 
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				        return false; 
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				    } 
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				    public  JSONObject transform(double lat, double lon) { 
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				        if (outOfChina(lat, lon)) { 
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				            return getPosition(lat, lon); 
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				        } 
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				        double dLat = transformLat(lon - 105.0, lat - 35.0); 
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				        double dLon = transformLon(lon - 105.0, lat - 35.0); 
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				        double radLat = lat / 180.0 * pi; 
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				        double magic = Math.sin(radLat); 
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				        magic = 1 - ee * magic * magic; 
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				        double sqrtMagic = Math.sqrt(magic); 
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				        dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi); 
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				        dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi); 
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				        double mgLat = lat + dLat; 
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				        double mgLon = lon + dLon; 
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				        return getPosition(mgLat, mgLon); 
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				    } 
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				    public  double transformLat(double x, double y) { 
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				        double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y 
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				                + 0.2 * Math.sqrt(Math.abs(x)); 
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				        ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0; 
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				        ret += (20.0 * Math.sin(y * pi) + 40.0 * Math.sin(y / 3.0 * pi)) * 2.0 / 3.0; 
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				        ret += (160.0 * Math.sin(y / 12.0 * pi) + 320 * Math.sin(y * pi / 30.0)) * 2.0 / 3.0; 
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				        return ret; 
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				    } 
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				    public  double transformLon(double x, double y) { 
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				        double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 
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				                * Math.sqrt(Math.abs(x)); 
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				        ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0; 
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				        ret += (20.0 * Math.sin(x * pi) + 40.0 * Math.sin(x / 3.0 * pi)) * 2.0 / 3.0; 
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				        ret += (150.0 * Math.sin(x / 12.0 * pi) + 300.0 * Math.sin(x / 30.0 
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				                * pi)) * 2.0 / 3.0; 
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				        return ret; 
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				    } 
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				    public JSONObject getPosition(double lat, double lon){ 
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				        JSONObject result = new JSONObject(); 
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				        result.put("lat",lat); 
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				        result.put("lon",lon); 
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				        return result; 
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				    } 
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				} 
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