Fractional coordinate conversion inaccurate GPS standard form

package com.yksx.utils;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Connection;
import java.sql.PreparedStatement;

/**
* Created by ZMJ on 2018/8/17
*/
public class GPSUtils {
public static double pi = 3.1415926535897932384626;
public static double x_pi = 3.14159265358979324 * 3000.0 / 180.0;
public static double a = 6378245.0;
public static double ee = 0.00669342162296594323;
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 (pi * y /
// 30.0)) * 2.0 / 3.0;
double RET = -100.0 + 2.0 * 3.0 * x + y * y + 0.2 + 0.1 * y * x * y + 0.2 * Math.sqrt (x> 0? x: -x);
RET + = (20.0 * Math.sin (6.0 * x * Math.PI) + 20.0 * Math.sin (2.0 * x * Math.PI)) * 2.0 / 3.0;
RET + = (20.0 * Math.sin (* Math.PI y) + 40.0 * Math.sin (y / Math.PI 3.0 *)) * 2.0 / 3.0;
RET + = (160.0 Math.sin * (y / * Math.PI 12.0) + 320 * Math.sin (y * Math.PI / 30.0)) * 2.0 / 3.0;
RET return;
}

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;
double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * Math.sqrt(x > 0 ? x : -x);
ret += (20.0 * Math.sin(6.0 * x * Math.PI) + 20.0 * Math.sin(2.0 * x * Math.PI)) * 2.0 / 3.0;
ret += (20.0 * Math.sin(x * Math.PI) + 40.0 * Math.sin(x / 3.0 * Math.PI)) * 2.0 / 3.0;
RET + = (150.0 Math.sin * (x / * Math.PI 12.0) + 300.0 Math.sin * (x / 30.0 Math.PI *)) * 2.0 / 3.0;
RET return;
}

public static double[] transform(double lat, double lon) {
if (outOfChina(lat, lon)) {
return new double[] { 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 double[] { mgLat, mgLon };
}

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;
}

/**
* 84 to 火星坐标系 (GCJ-02) World Geodetic System ==> Mars Geodetic System *
* * @param lat * @param lon * @return
*/
public static double[] gps84_To_Gcj02(double lat, double lon) {
if (outOfChina(lat, lon)) {
return new double[] { 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 double[] { mgLat, mgLon };
}

/**
* * 火星坐标系 (GCJ-02) to 84 * * @param lon * @param lat * @return *
*/
public static double[] gcj02_To_Gps84(double lat, double lon) {
double[] gps = transform(lat, lon);
double lontitude = lon * 2 - gps[1];
double latitude = lat * 2 - gps[0];
return new double[] { latitude, lontitude };
}

/ **
Conversion * Mars coordinate system (GCJ-02) and Baidu coordinate system (BD-09) conversion algorithm GCJ-02 coordinates into BD-09 coordinates @param * *
* * @param LAT LON
* /
public static Double [] gcj02_To_Bd09 (LAT Double, Double LON) {
Double LON X =, Y = LAT;
Double the Math.sqrt Z = (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 Math.cos Templon = Z * (Theta) + 0.0065;
Double templat * Math.sin, Z = (Theta) + 0.006;
Double [ ] = {templat GPS, Templon};
return GPS;
}

/ **
* * Mars coordinate system (GCJ-02) and Baidu coordinate system (BD-09) * * conversion algorithm to convert the BD-09 coordinates into coordinates GCJ-02 *
* * * @param bd_lat * * @param bd_lon @return
* /
public static Double [] bd09_To_Gcj02 (LAT Double, Double LON) {
Double X LON = - 0.0065, Y = LAT - 0.006;
Double the Math.sqrt Z = (X * X + Y * Y) - 0.00002 * the Math .sin (Y * x_pi);
Double Math.atan2 Theta = (Y, X) - 0.000003 * Math.cos (X * x_pi);
Double Math.cos Templon = Z * (Theta);
Double Z * = templat the Math. SiN (Theta);
Double [] = {templat GPS, Templon};
return GPS;
}

/**
* 将gps84转为bd09 * @param lat * @param lon * @return
*/
public static double[] gps84_To_bd09(double lat, double lon) {
double[] gcj02 = gps84_To_Gcj02(lat, lon);
double[] bd09 = gcj02_To_Bd09(gcj02[0], gcj02[1]);
return bd09;
}

Double static public [] bd09_To_gps84 (LAT Double, Double LON) {
Double [] = gcj02 bd09_To_Gcj02 (LAT, LON);
after six decimal places //; double [] gps84 = gcj02_To_Gps84 ( gcj02 [0], gcj02 [1]) bit
gps84 [0] = retain6 (gps84 [0]);
gps84 [. 1] = retain6 (gps84 [. 1]);
return gps84;
}

/ **
* six decimal places NUM * @param @return *
* /
Private static Double retain6 (Double NUM) {
String String.format Result = ( "% 6F.", NUM);
return Double.valueOf (Result) ;
}

// 测试
@SuppressWarnings("resource")
public static void main(String[] args) {

PreparedStatement ps = null;
Connection ct = null;
ResultSet rs = null;
int aa = 0;
try {
// 1.加载驱动
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
// 2.得到链接 127.0.0.1:1433
ct = DriverManager.getConnection("jdbc:sqlserver://192.168.1.252:1433;DatabaseName=shxchcap", "sa", "root");

ps = (PreparedStatement) ct.prepareStatement("select * from Pub_Division_Plus_copy");
rs = ps.executeQuery();
double longitude = 0;
double latitude = 0;
int num = 0;
if (rs != null) {

while (rs.next()) {
longitude = Double.parseDouble(rs.getString(1));
longitude = Double.parseDouble(rs.getString(14));
latitude = Double.parseDouble(rs.getString(15));
double[] latlog = gps84_To_Gcj02(latitude, longitude);
double d = latlog[0];
double e = latlog[1];
System.out.println(d + e);
// 修改纬度、经度
ct = DriverManager.getConnection("jdbc:sqlserver://192.168.1.252:1433;DatabaseName=shxchcap", "sa",
"root");
ps = (PreparedStatement) ct.prepareStatement("update Pub_Division_Plus_copy set latitude=" + d
+ ",longitude=" + e + "where UnitID=" + rs.getString(1));
num = ps.executeUpdate();
if (num > 0) {
System.Out.println ( "modified successfully");
}
aa++;
}
}
System.out.println(aa);
} catch (Exception e) {
e.printStackTrace();

} finally {
try {
if (rs != null)
rs.close();
if (ps != null)
ps.close();
if (ct != null)
ct.close();

} catch (Exception e) {
e.printStackTrace();
}
}
}

}

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Origin www.cnblogs.com/yixinyili/p/11238245.html