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java - 如何使用 GeoTools API 创建和填充 shp 文件

问题描述

我需要创建一个空的形状文件并用我的 java 集合中的数据填充它。有人可以向我展示如何实现这一目标的示例吗？提前致谢。

标签： javashapegeotools

解决方案

有关完整详细信息，请参阅CSV 到 Shapefile 教程。

基本上，您需要在SimpleFeatureType对象中定义 Shapefiles 列，最简单的方法是使用SimpleFeatureTypeBuilder. 这里是直接使用实用程序方法生成的，以节省时间。

    final SimpleFeatureType TYPE = 
        DataUtilities.createType("Location",
            "location:Point:srid=4326," + // <- the geometry attribute: Point type
                    "name:String," + // <- a String attribute
                    "number:Integer" // a number attribute
    );

现在，您可以创建 Shapefile：

    /*
     * Get an output file name and create the new shapefile
     */
    File newFile = getNewShapeFile(file);

    ShapefileDataStoreFactory dataStoreFactory = new ShapefileDataStoreFactory();

    Map<String, Serializable> params = new HashMap<String, Serializable>();
    params.put("url", newFile.toURI().toURL());
    params.put("create spatial index", Boolean.TRUE);

    ShapefileDataStore newDataStore = (ShapefileDataStore) dataStoreFactory.createNewDataStore(params);
    newDataStore.createSchema(TYPE);

    /*
     * You can comment out this line if you are using the createFeatureType method (at end of
     * class file) rather than DataUtilities.createType
     */
    newDataStore.forceSchemaCRS(DefaultGeographicCRS.WGS84);

并且，最后将集合写入Features它：

    Transaction transaction = new DefaultTransaction("create");

    String typeName = newDataStore.getTypeNames()[0];
    SimpleFeatureSource featureSource = newDataStore.getFeatureSource(typeName);

    if (featureSource instanceof SimpleFeatureStore) {
        SimpleFeatureStore featureStore = (SimpleFeatureStore) featureSource;

        featureStore.setTransaction(transaction);
        try {
            featureStore.addFeatures(collection);
            transaction.commit();

        } catch (Exception problem) {
            problem.printStackTrace();
            transaction.rollback();

        } finally {
            transaction.close();
        }
        System.exit(0); // success!
    } else {
        System.out.println(typeName + " does not support read/write access");
        System.exit(1);
    }

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