通过geotools读写shp文件

可以使用Geotools库来读写shp文件。下面是一个简单的示例代码，可以读取shp文件并打印出其属性表信息：

import java.io.File;
import java.io.IOException;
import org.geotools.data.DataStore;
import org.geotools.data.DataStoreFinder;
import org.geotools.data.simple.SimpleFeatureCollection;
import org.geotools.data.simple.SimpleFeatureIterator;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;

public class ShpFileReader {
    public static void main(String[] args) throws IOException {
        // 读取shp文件
        File file = new File("path/to/shapefile.shp");
        DataStore dataStore = DataStoreFinder.getDataStore(file);
        String typeName = dataStore.getTypeNames()[0];
        SimpleFeatureType schema = dataStore.getSchema(typeName);

        // 获取属性表信息
        System.out.println("Feature Type: " + typeName);
        System.out.println("Number of attributes: " + schema.getAttributeCount());
        System.out.println("Attributes: ");
        for (int i = 0; i < schema.getAttributeCount(); i++) {
            System.out.println(schema.getAttributeDescriptors().get(i).getName());
        }

        // 获取要素信息
        SimpleFeatureCollection collection = dataStore.getFeatureSource(typeName).getFeatures();
        try (SimpleFeatureIterator features = collection.features()) {
            while (features.hasNext()) {
                SimpleFeature feature = features.next();
                System.out.println(feature.getID() + ": " + feature.getDefaultGeometryProperty().getValue());
            }
        }
        dataStore.dispose();
    }
}

需要注意的是，需要在pom.xml中添加geotools依赖：

<dependency>
    <groupId>org.geotools</groupId>
    <artifactId>gt-shapefile</artifactId>
    <version>24.0</version>
</dependency>