geotools 读取shape文件

对于GIS开发者而言，矢量数据是我们经常要用到的，而shape数据是矢量数据中最常用的格式，因此解析shape数据也是作为GIS软件开发人员必备的基础技能，而GeoTools无疑是Java最好用来处理GIS数据的三方库，下面例子是简单的geotools读取shape的例子

1、pom依赖包引入

 <dependencies><dependency><groupId>org.geotools</groupId><artifactId>gt-shapefile</artifactId><version>25.2</version></dependency></dependencies>

2、解析函数

package com.gis;import java.io.File;
import java.io.IOException;
import java.util.List;import org.geotools.data.FeatureSource;
import org.geotools.data.Query;
import org.geotools.data.shapefile.ShapefileDataStore;
import org.geotools.data.simple.SimpleFeatureCollection;
import org.geotools.data.simple.SimpleFeatureIterator;
import org.geotools.geometry.jts.ReferencedEnvelope;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.type.AttributeDescriptor;
import org.opengis.feature.type.GeometryType;
import org.opengis.referencing.crs.CoordinateReferenceSystem;/*** shape文件读取* @author ly**/
public class ShapeFileReaderTest {private static final String FILE_PATH = "E:\\data\\shape\\****.shp";public static void main(String[] args) {File file = new File(FILE_PATH);readShapeFile(file);}/*** * @param shpFile  传递的是shape文件中的.shp文件*/private static void readShapeFile(File shpFile) {/*** 直接使用shapefileDatastore,如果不知道，也可以使用工厂模式(见下个方法)* 建议，如果确定是shape文件，就直使用shapefileDatastore*/try {ShapefileDataStore shapefileDataStore = new ShapefileDataStore(shpFile.toURI().toURL());//这个typeNamae不传递，默认是文件名称FeatureSource featuresource = shapefileDataStore.getFeatureSource(shapefileDataStore.getTypeNames()[0]);//读取bboxReferencedEnvelope bbox = featuresource.getBounds();//读取投影CoordinateReferenceSystem crs = featuresource.getSchema().getCoordinateReferenceSystem();//特征总数int count = featuresource.getCount(Query.ALL);//获取当前数据的geometry类型（点、线、面）GeometryType geometryType = featuresource.getSchema().getGeometryDescriptor().getType();//读取要素SimpleFeatureCollection simpleFeatureCollection = (SimpleFeatureCollection) featuresource.getFeatures();//获取当前矢量数据有哪些属性字段值List<AttributeDescriptor> attributes = simpleFeatureCollection.getSchema().getAttributeDescriptors();//SimpleFeatureIterator simpleFeatureIterator = simpleFeatureCollection.features();//while(simpleFeatureIterator.hasNext()) {SimpleFeature simpleFeature = simpleFeatureIterator.next();attributes.stream().forEach((a) -> {//依次读取这个shape中每一个属性值，当然这个属性值，可以处理其它业务System.out.println(simpleFeature.getAttribute(a.getLocalName()));});}} catch (IOException e) {e.printStackTrace();}}}