网站开发 集成包,深圳网站建设专业乐云seo,自己做信息网站,html5网页开发工具geotools解析kml、geojson geotools环境准备公共获取属性方法解析kml解析geojson解析shp geotools环境准备
这里使用的是maven引用geotools包#xff0c;引用geotools包需要添加maven仓库#xff0c;pom.xml文件如下#xff1a;
properties!-- geotools版本 -… geotools解析kml、geojson geotools环境准备公共获取属性方法解析kml解析geojson解析shp geotools环境准备
这里使用的是maven引用geotools包引用geotools包需要添加maven仓库pom.xml文件如下
properties!-- geotools版本 --geotools-version28.2/geotools-version
/properties!-- geotools--
dependencygroupIdorg.geotools/groupIdartifactIdgt-main/artifactIdversion${geotools-version}/version
/dependency
dependencygroupIdorg.geotools/groupIdartifactIdgt-geojson/artifactIdversion${geotools-version}/version
/dependency!-- geotools-geojson核心包 --
dependencygroupIdorg.geotools/groupIdartifactIdgt-geojson-core/artifactIdversion${geotools-version}/version
/dependency
dependencygroupIdorg.geotools.xsd/groupIdartifactIdgt-xsd-kml/artifactIdversion${geotools-version}/version
/dependency!-- geotools仓库--
repositoriesrepositoryidosgeo/idnameOpen Source Geospatial Foundation Repository/nameurlhttps://repo.osgeo.org/repository/release//url/repositoryrepositoryidosgeo-snapshot/idnameOSGeo Snapshot Repository/nameurlhttps://repo.osgeo.org/repository/snapshot//url/repository
/repositories公共获取属性方法
Slf4j
public class AnalysisUtil {public static void readProperty(SimpleFeature simpleFeature) {CollectionProperty properties simpleFeature.getProperties();IteratorProperty iterator properties.iterator();int index 0;while (iterator.hasNext()) {Property property iterator.next();//kml拿到属性值会有自带的9个属性if (index 8) {log.info(GeoJSONReader解析geojson -- 属性名【{}】属性值【{}】属性类型【{}】, property.getName().toString(),property.getValue(), property.getType().getBinding());}}Object defaultGeometry simpleFeature.getDefaultGeometry();//wkt格式geometryGeometry geometry (Geometry) defaultGeometry;log.info(wkt格式geometry{}, geometry);}
}解析kml KML(Keyhole Markup Language,Keyhole 标记语言)是一种基于XML 的标记语言利用XML 语法格式描述地理空间数据(如点、线、面、多边形和模型等)。 public class AnalysisKml {public static void main(String[] args) {String fileUrl D:\\workspace\\vector\\vector\\KML.kml;try (FileInputStream fileInputStream new FileInputStream(fileUrl)) {PullParser parser new PullParser(new KMLConfiguration(), fileInputStream, SimpleFeature.class);SimpleFeature simpleFeature (SimpleFeature) parser.parse();//kml文件声明了坐标系才能获取到没声明获取就是nullCoordinateReferenceSystem coordinateReferenceSystem simpleFeature.getFeatureType().getCoordinateReferenceSystem();log.info(解析kml获取坐标系{}, coordinateReferenceSystem);readKml(simpleFeature, parser);} catch (XMLStreamException | IOException | SAXException e) {throw new UtilException(e.getMessage());}}//递归方式获取每个地块信息public static void readKml(SimpleFeature simpleFeature, PullParser parser) throws XMLStreamException, IOException,SAXException {//读取属性AnalysisUtil.readProperty(simpleFeature);//获取下一个simpleFeaturewhile (simpleFeature ! null simpleFeature.getDefaultGeometry() ! null) {simpleFeature (SimpleFeature) parser.parse();readKml(simpleFeature, parser);}}
}解析geojson GeoJSON 是一种用于编码各种地理数据结构的格式。 GeoJSON 支持以下几何类型Point、LineString、Polygon、MultiPoint、MultiLineString 和 MultiPolygon。 具有附加属性的几何对象是特征对象。 要素集包含在FeatureCollection 对象中。 下面介绍2种解析geojson的方法 org.geotools.data.geojson.GeoJSONReader解析给geojson,但是它不会读取坐标系所以不管什么坐标系的geojson文件读出来都是默认的坐标系WGS84.org.geotools.geojson.feature.FeatureJSON解析geojson可以读到文件对应的坐标系。 Slf4j
public class GeoJsonAnalysis {public static void main(String[] args) {String fileUrl D:\\workspace\\vector\\vector\\福田路网geojson.geojson;geoJSONReader(fileUrl);featureJson(fileUrl);}public static void featureJson(String fileUrl) {// 指定GeometryJSON构造器15位小数FeatureJSON featureJson new FeatureJSON(new GeometryJSON(15));try {FeatureCollection featureCollection featureJson.readFeatureCollection(new FileInputStream(fileUrl));//获取坐标系CoordinateReferenceSystem coordinateReferenceSystem featureCollection.getSchema().getCoordinateReferenceSystem();log.info(解析geojson获取坐标系{}, coordinateReferenceSystem);FeatureIterator featureIterator featureCollection.features();while (featureIterator.hasNext()) {SimpleFeature simpleFeature (SimpleFeature) featureIterator.next();AnalysisUtil.readProperty(simpleFeature);}} catch (IOException e) {e.printStackTrace();}}public static void geoJSONReader(String fileUrl) {GeoJSONReader reader null;try {reader new GeoJSONReader(new FileInputStream(fileUrl));SimpleFeatureCollection featureCollection reader.getFeatures();//创建图层数据迭代器FeatureIteratorSimpleFeature simpleFeatureFeatureIterator featureCollection.features();while (simpleFeatureFeatureIterator.hasNext()) {AnalysisUtil.readProperty(simpleFeatureFeatureIterator.next());}} catch (IOException e) {e.printStackTrace();} finally {if (reader ! null) {try {reader.close();} catch (IOException e) {e.printStackTrace();}}}}
}解析shp
shp文件解析请看往期文章geotoolsu解析shp文件
