请使用geotools实现mbtiles的栅格瓦片写入操作

好的，以下是使用GeoTools实现MBTiles栅格瓦片写入的示例代码：

import java.io.File;
import java.io.IOException;
import java.nio.file.Paths;
import java.util.HashMap;
import java.util.Map;

import org.geotools.data.DataStore;
import org.geotools.data.DataStoreFinder;
import org.geotools.data.DefaultTransaction;
import org.geotools.data.Transaction;
import org.geotools.data.mbtiles.MBTilesDataStoreFactory;
import org.geotools.data.mbtiles.MBTilesWriteAdapter;
import org.geotools.data.mbtiles.MBTilesWriteResult;
import org.geotools.factory.CommonFactoryFinder;
import org.geotools.factory.Hints;
import org.geotools.factory.ProjectFactoryFinder;
import org.geotools.factory.epsg.FactoryFinder;
import org.geotools.geometry.jts.JTSFactoryFinder;
import org.geotools.map.MapContent;
import org.geotools.referencing.CRS;
import org.geotools.renderer.GTRenderer;
import org.geotools.renderer.RenderListener;
import org.geotools.renderer.RendererUtilities;
import org.geotools.renderer.lite.StreamingRenderer;
import org.locationtech.jts.geom.Envelope;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;
import org.opengis.referencing.FactoryException;
import org.opengis.referencing.NoSuchAuthorityCodeException;
import org.opengis.referencing.crs.CoordinateReferenceSystem;

public class MBTilesRasterWriter {

    public static void main(String[] args) throws Exception {

        // 定义MBTiles文件路径
        File mbtilesFile = new File("/path/to/mbtiles/file.mbtiles");

        // 定义栅格瓦片数据源（例如GeoTIFF文件）
        File rasterFile = new File("/path/to/raster/file.tif");

        // 定义瓦片格式
        String format = "png";

        // 定义瓦片渲染范围
        Envelope bbox = new Envelope(-180, 180, -90, 90);

        // 定义瓦片数据范围（需要与栅格文件的范围一致）
        Envelope dataExtent = new Envelope(-180, 180, -90, 90);

        // 初始化MBTiles数据存储器
        Map<String, Object> params = new HashMap<>();
        params.put(MBTilesDataStoreFactory.PARAMETER_DBTYPE, "mbtiles");
        params.put(MBTilesDataStoreFactory.PARAMETER_HOST, mbtilesFile);
        DataStore store = DataStoreFinder.getDataStore(params);

        // 初始化MBTiles写入适配器
        MBTilesWriteAdapter writer = new MBTilesWriteAdapter(store.getDefaultSchema().getTypeNames()[0]);

        // 构造瓦片数据类型
        SimpleFeatureType tileType = writer.getTileType(dataExtent, bbox, format);

        // 初始化渲染器
        CoordinateReferenceSystem crs = CRS.decode("EPSG:4326");
        GTRenderer renderer = new StreamingRenderer();
        renderer.setContext(new MapContent());
        renderer.getContext().setCRS(crs);

        // 配置渲染参数
        Hints hints = new Hints();
        hints.put(Hints.FEATURE_DETACHED, Boolean.TRUE);
        hints.put(Hints.DISPLAY_METHODS, new String[] { "STYLE" });
        hints.put(Hints.PROJECT_FACTORY, ProjectFactoryFinder.getProjectFactory());
        hints.put(Hints.JTS_COORDINATE_FACTORY, JTSFactoryFinder.getCoordinateFactory(null));
        hints.put(Hints.JTS_GEOMETRY_FACTORY, JTSFactoryFinder.getGeometryFactory(null));
        hints.put(Hints.RENDERING_ORDER, CommonFactoryFinder.getStyleFactory().getDefaultRenderingOrder());
        hints.put(Hints.DEFAULT_COORDINATE_REFERENCE_SYSTEM, crs);
        hints.put(Hints.COORDINATE_OPERATION_FACTORY, FactoryFinder.getCoordinateOperationFactory(hints));
        hints.put(Hints.CRS_AUTHORITY_FACTORY, FactoryFinder.getCRSAuthorityFactory(hints));
        hints.put(Hints.FEATURE_FACTORY, CommonFactoryFinder.getFeatureFactory(hints));
        hints.put(Hints.STYLE_FACTORY, CommonFactoryFinder.getStyleFactory(hints));
        hints.put(Hints.SIMPLE_FEATURE_FACTORY, CommonFactoryFinder.getFeatureFactory(hints));
        hints.put(Hints.FILTER_FACTORY, CommonFactoryFinder.getFilterFactory());
        hints.put(Hints.SEPARATED_THREAD_GROUP, true);
        hints.put(Hints.MAXIMUM_VISIBLE_MEMORY, 20000000);

        // 开始写入瓦片数据
        Transaction tx = new DefaultTransaction();
        try {
            // 创建MBTiles数据表
            writer.createTable(store, tileType, tx);

            // 获取渲染后的瓦片图像，并写入MBTiles
            MBTilesWriteResult result = writer.write(
                    new RenderListener[] { RendererUtilities.wrapSingleLayer(tileType) },
                    renderer,
                    rasterFile.toURI().toURL(),
                    dataExtent,
                    bbox,
                    format,
                    tx,
                    hints);

            // 提交事务
            tx.commit();

            // 输出写入结果
            System.out.println("Tiles written: " + result.getTileCount());
        } catch (IOException e) {
            // 回滚事务
            tx.rollback();
            throw e;
        } finally {
            tx.close();
            store.dispose();
        }
    }
}

需要注意的是，以上代码中的`rasterFile`变量应该指向一个GeoTIFF格式的栅格文件。如果你的栅格文件不是GeoTIFF格式，可以使用GDAL等工具进行转换。此外，你也需要将代码中的`/path/to/mbtiles/file.mbtiles`和`/path/to/raster/file.tif`替换为实际的文件路径。