如何使用geotools实现栅格矢量化，请提供完整代码

以下是使用GeoTools实现栅格矢量化的完整示例代码：

import java.io.File;
import java.io.IOException;

import org.geotools.coverage.grid.GridCoverage2D;
import org.geotools.coverage.grid.GridGeometry2D;
import org.geotools.data.simple.SimpleFeatureCollection;
import org.geotools.data.simple.SimpleFeatureIterator;
import org.geotools.factory.CommonFactoryFinder;
import org.geotools.feature.simple.SimpleFeatureBuilder;
import org.geotools.feature.simple.SimpleFeatureTypeBuilder;
import org.geotools.gce.arcgrid.ArcGridReader;
import org.geotools.geometry.jts.JTSFactoryFinder;
import org.geotools.process.vector.VectorToRasterProcess;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;

import com.vividsolutions.jts.geom.GeometryFactory;

public class RasterToVectorExample {

    public static void main(String[] args) throws IOException {
        // 输入栅格文件路径
        File rasterFile = new File("path/to/raster.tif");

        // 创建ArcGridReader并读取栅格数据
        ArcGridReader reader = new ArcGridReader(rasterFile);
        GridCoverage2D coverage = reader.read(null);

        // 获取栅格的几何信息
        GridGeometry2D geometry = coverage.getGridGeometry();

        // 创建输出矢量文件路径
        File vectorFile = new File("path/to/vector.shp");

        // 设置输出矢量文件的坐标参考系和几何类型
        SimpleFeatureTypeBuilder typeBuilder = new SimpleFeatureTypeBuilder();
        typeBuilder.setName("VectorLayer");
        typeBuilder.setCRS(geometry.getCoordinateReferenceSystem());
        typeBuilder.add("geometry", geometry.getGridToCRS());
        SimpleFeatureType featureType = typeBuilder.buildFeatureType();

        // 创建矢量文件的FeatureCollection
        SimpleFeatureBuilder featureBuilder = new SimpleFeatureBuilder(featureType);
        SimpleFeatureCollection featureCollection = featureType.buildFeatureCollection();

        // 创建GeometryFactory用于创建矢量要素的几何对象
        GeometryFactory geometryFactory = JTSFactoryFinder.getGeometryFactory();

        // 进行栅格矢量化
        VectorToRasterProcess process = new VectorToRasterProcess();
        process.execute(coverage, geometry, featureBuilder, featureCollection, geometryFactory);

        // 遍历矢量要素并进行操作
        try (SimpleFeatureIterator features = featureCollection.features()) {
            while (features.hasNext()) {
                SimpleFeature feature = features.next();
                // 在这里可以对每个矢量要素进行操作，如输出属性值等
                System.out.println(feature.getDefaultGeometry());
            }
        }

        // 保存矢量文件
        FileDataStoreFactorySpi factory = FileDataStoreFinder.getDataStoreFactory("shapefile");
        Map<String, Serializable> createParams = new HashMap<>();
        createParams.put("url", vectorFile.toURI().toURL());
        createParams.put("create spatial index", Boolean.TRUE);
        FileDataStore dataStore = factory.createNewDataStore(createParams);
        dataStore.createSchema(featureType);
        dataStore.forceSchemaCRS(geometry.getCoordinateReferenceSystem());
        try (FeatureWriter<SimpleFeatureType, SimpleFeature> writer =
                dataStore.getFeatureWriterAppend(dataStore.getTypeNames()[0], Transaction.AUTO_COMMIT)) {
            try (SimpleFeatureIterator features = featureCollection.features()) {
                while (features.hasNext()) {
                    SimpleFeature feature = features.next();
                    SimpleFeature copy = writer.next();
                    copy.setAttributes(feature.getAttributes());
                    writer.write();
                }
            }
        }

        System.out.println("Vectorization complete.");
    }
}

请确保将代码中的文件路径替换为实际的栅格文件和输出矢量文件路径。此代码将栅格文件转换为矢量文件，并遍历矢量要素进行操作。最后，将生成的矢量文件保存到指定路径中。