Java利用Geotools实现不同坐标系之间坐标转换

 <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <geotools.version>28-SNAPSHOT</geotools.version>
    <maven.deploy.skip>true</maven.deploy.skip>
  </properties>

        <dependency>
            <groupId>org.geotools</groupId>
            <artifactId>gt-main</artifactId>
            <version>${geotools.version}</version>
        </dependency>
        <dependency>
            <groupId>org.geotools</groupId>
            <artifactId>gt-epsg-hsql</artifactId>
            <version>${geotools.version}</version>
        </dependency>

  <repositories>
    <repository>
    <id>osgeo</id>
    <name>OSGeo Release Repository</name>
    <url>https://repo.osgeo.org/repository/release/</url>
    <snapshots><enabled>false</enabled></snapshots>
    <releases><enabled>true</enabled></releases>
    </repository>
    <repository>
    <id>osgeo-snapshot</id>
    <name>OSGeo Snapshot Repository</name>
    <url>https://repo.osgeo.org/repository/snapshot/</url>
    <snapshots><enabled>true</enabled></snapshots>
    <releases><enabled>false</enabled></releases>
    </repository>
  </repositories>

import lombok.extern.slf4j.Slf4j;
import org.geotools.geometry.jts.JTS;
import org.geotools.referencing.CRS;
import org.locationtech.jts.geom.Coordinate;
import org.opengis.referencing.FactoryException;
import org.opengis.referencing.crs.CoordinateReferenceSystem;
import org.opengis.referencing.operation.MathTransform;
import org.opengis.referencing.operation.TransformException;
 
import java.math.BigDecimal;
 
@Slf4j
public class GisUtil {
 
    public static void main(String[] args) throws FactoryException, TransformException {
        bjz54ToCgcs2000( 39440999.301,3631381.649);
    //    bjz54ToCgcs2000( 39446227.146,3626791.679);
    }
 
    /**
     * @param x 源坐标x
     * @param y 源坐标y
     * @Description: 坐标系转换-北京54投影转国家2000投影
     */
    public static Coordinate bjz54ToCgcs2000(double x ,double y){
        Coordinate tgtCoordinate= coordinateTransform(2415,4527, y, x);
        double tx=new BigDecimal(tgtCoordinate.x).setScale(3, BigDecimal.ROUND_HALF_UP).doubleValue();
        double ty=new BigDecimal(tgtCoordinate.y).setScale(3, BigDecimal.ROUND_HALF_UP).doubleValue();
        log.info(ty+","+tx);
        tgtCoordinate.setX(ty);
        tgtCoordinate.setY(tx);
        return tgtCoordinate;
    }
 
    public static Coordinate bjz54ToCgcs2000(Coordinate p){
        return bjz54ToCgcs2000(p.x, p.y);
    }
 
    /**
     * @param srcNo 源坐标系EPSG代号
     * @param targetNo 目标坐标系EPSG代号
     * @param x 源坐标x
     * @param y 源坐标y
     * @Description: 坐标系转换 
     */
    public static Coordinate coordinateTransform(int srcNo, int targetNo, double x , double y){
        Coordinate tar=new Coordinate();
        try {
            CoordinateReferenceSystem src = CRS.decode("EPSG:"+srcNo);
            CoordinateReferenceSystem target = CRS.decode("EPSG:"+targetNo);
            MathTransform transform = CRS.findMathTransform(src, target, true);
            Coordinate sour= new Coordinate(x, y);
           return JTS.transform(sour, tar, transform);
        } catch (FactoryException | TransformException  e) {
            log.error(e.getMessage());
        }
        return tar;
 
    }
}

    @ApiOperation(value = "坐标系转换北京54-国家2000")
    @GetMapping(value = "/bjz54ToCgcs2000")
    public ResponseDTO<Coordinate> bjz54ToCgcs2000(@RequestBody Coordinate dto){
        return ResponseDTO.succData(GisUtil.bjz54ToCgcs2000(dto));
    }