添加proj4j坐标转换接口

13693261870

2023-09-20 9e80b0e01501851a2e37d3612d6f0fc03f58ce8d

添加proj4j坐标转换接口

 pom.xml

@@ -254,6 +254,12 @@
            <artifactId>sqlite-jdbc</artifactId>
            <version>3.36.0.3</version>
        </dependency>
        <!--proj4j-->
        <dependency>
            <groupId>org.osgeo</groupId>
            <artifactId>proj4j</artifactId>
            <version>0.1.0</version>
        </dependency>
    </dependencies>

    <build>

 src/main/java/com/lf/server/controller/data/PublishController.java

@@ -303,7 +303,7 @@
    @GetMapping(value = "/selectCsTransform")
    public Object selectCsTransform(double x, double y, int epsg) {
        try {
            return rasterService.csTransform(x, y, epsg);
            return rasterService.transformByProj4j(x, y, epsg);
        } catch (Exception ex) {
            return null;
        }

 src/main/java/com/lf/server/service/data/RasterService.java

@@ -10,6 +10,7 @@
import org.gdal.ogr.Geometry;
import org.gdal.ogr.ogr;
import org.gdal.osr.SpatialReference;
import org.osgeo.proj4j.*;
import org.springframework.stereotype.Service;

import java.io.File;
@@ -79,7 +80,7 @@
    }

    /**
     * 查询坐标转换
     * 坐标转换
     */
    public Object csTransform(double x, double y, int epsg) {
        this.initSr();
@@ -100,4 +101,22 @@

        return new double[]{point.GetX(), point.GetY()};
    }

    /**
     * 坐标转换-使用Proj4j库
     */
    public String transformByProj4j(double x, double y, int epsg) {
        CRSFactory crsFactory = new CRSFactory();
        CoordinateReferenceSystem fromCrs = crsFactory.createFromName("EPSG:" + epsg);
        CoordinateReferenceSystem toCrs = crsFactory.createFromName("EPSG:4326");

        CoordinateTransformFactory ctf = new CoordinateTransformFactory();
        CoordinateTransform transform = ctf.createTransform(fromCrs, toCrs);

        ProjCoordinate fromCoord = new ProjCoordinate(x, y);
        ProjCoordinate toCoord = new ProjCoordinate();
        transform.transform(fromCoord, toCoord);

        return String.format("%f,%f", toCoord.x, toCoord.y);
    }
}