package com.dji.sample.patches.utils;
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import com.dji.sample.patches.kml.KmlData;
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import com.dji.sample.patches.kml.KmlLine;
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import com.dji.sample.patches.kml.KmlPoint;
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import com.dji.sample.patches.kml.KmlPolygon;
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import de.micromata.opengis.kml.v_2_2_0.*;
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import org.apache.commons.compress.archivers.ArchiveEntry;
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import org.apache.commons.compress.archivers.ArchiveInputStream;
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import org.apache.commons.compress.archivers.zip.ZipArchiveInputStream;
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import java.io.*;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* @description: KML文件解析
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**/
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public class ParsingKmlUtil {
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/**
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* 解析kml文件
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*/
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public static KmlData parseKmlByFile(File file) {
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Kml kml = Kml.unmarshal(file);
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return getByKml(kml);
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}
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/**
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* 解析kml文件流
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*
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* @param inputstream
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* @return
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*/
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public static KmlData parseKmlByInputstream(InputStream inputstream) {
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Kml kml = Kml.unmarshal(inputstream);
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return getByKml(kml);
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}
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/**
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* Kml对象转自定义存储对象
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*
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* @param kml
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* @return
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*/
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public static KmlData getByKml(Kml kml) {
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KmlData kmlData = new KmlData();
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kmlData.setKmlPoints(new ArrayList<>());
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kmlData.setKmlLines(new ArrayList<>());
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kmlData.setKmlPolygons(new ArrayList<>());
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Feature feature = kml.getFeature();
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parseFeature(feature, kmlData);
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return kmlData;
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}
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/**
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* 解析kml节点
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* @param feature
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* @param kmlData
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*/
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private static void parseFeature(Feature feature, KmlData kmlData) {
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if (feature != null) {
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if (feature instanceof Document) {
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List<Feature> featureList = ((Document) feature).getFeature();
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featureList.forEach(documentFeature -> {
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if (documentFeature instanceof Placemark) {
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getPlaceMark((Placemark) documentFeature, kmlData);
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} else {
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parseFeature(documentFeature, kmlData);
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}
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});
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} else if (feature instanceof Folder) {
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List<Feature> featureList = ((Folder) feature).getFeature();
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featureList.forEach(documentFeature -> {
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if (documentFeature instanceof Placemark) {
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getPlaceMark((Placemark) documentFeature, kmlData);
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} else {
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parseFeature(documentFeature, kmlData);
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}
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});
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}
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}
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}
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private static void getPlaceMark(Placemark placemark, KmlData kmlData) {
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Geometry geometry = placemark.getGeometry();
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/*String name = placemark.getName();
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placemark.getDescription();
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System.out.println(placemark.getDescription());
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if (name == null) {
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name = placemark.getDescription();
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}
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parseGeometry(name, geometry, kmlData);*/
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parseGeometry(placemark,geometry,kmlData);
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}
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/**
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* 解析点线面形状的数据分别放入存储对象
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* @param placemark placemark对象
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* @param geometry 形状类型
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* @param kmlData 存储对象
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*/
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private static void parseGeometry(Placemark placemark, Geometry geometry, KmlData kmlData) {
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if (geometry != null) {
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if (geometry instanceof Polygon) {
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Polygon polygon = (Polygon) geometry;
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Boundary outerBoundaryIs = polygon.getOuterBoundaryIs();
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if (outerBoundaryIs != null) {
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LinearRing linearRing = outerBoundaryIs.getLinearRing();
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if (linearRing != null) {
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List<Coordinate> coordinates = linearRing.getCoordinates();
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if (coordinates != null) {
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outerBoundaryIs = ((Polygon) geometry).getOuterBoundaryIs();
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addPolygonToList(kmlData.getKmlPolygons(), placemark, outerBoundaryIs);
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}
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}
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}
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} else if (geometry instanceof LineString) {
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LineString lineString = (LineString) geometry;
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List<Coordinate> coordinates = lineString.getCoordinates();
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if (coordinates != null) {
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coordinates = ((LineString) geometry).getCoordinates();
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addLineStringToList(kmlData.getKmlLines(), coordinates, placemark);
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}
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} else if (geometry instanceof Point) {
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Point point = (Point) geometry;
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List<Coordinate> coordinates = point.getCoordinates();
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if (coordinates != null) {
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coordinates = ((Point) geometry).getCoordinates();
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addPointToList(kmlData.getKmlPoints(), coordinates, placemark);
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}
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} else if (geometry instanceof MultiGeometry) {
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List<Geometry> geometries = ((MultiGeometry) geometry).getGeometry();
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for (Geometry geometryToMult : geometries) {
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Boundary outerBoundaryIs;
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List<Coordinate> coordinates;
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if (geometryToMult instanceof Point) {
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coordinates = ((Point) geometryToMult).getCoordinates();
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addPointToList(kmlData.getKmlPoints(), coordinates, placemark);
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} else if (geometryToMult instanceof LineString) {
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coordinates = ((LineString) geometryToMult).getCoordinates();
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addLineStringToList(kmlData.getKmlLines(), coordinates, placemark);
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} else if (geometryToMult instanceof Polygon) {
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outerBoundaryIs = ((Polygon) geometryToMult).getOuterBoundaryIs();
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addPolygonToList(kmlData.getKmlPolygons(), placemark, outerBoundaryIs);
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}
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}
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}
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}
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}
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/**
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* 保存面状数据
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*
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* @param kmlPolygonList 已有面状数据
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* @param placemark placemark对象
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* @param outerBoundaryIs 面状信息
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*/
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private static void addPolygonToList(List<KmlPolygon> kmlPolygonList, Placemark placemark, Boundary outerBoundaryIs) {
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LinearRing linearRing = outerBoundaryIs.getLinearRing();// 面
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KmlPolygon kmlPolygon = new KmlPolygon();
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kmlPolygon.setPoints(linearRing.getCoordinates());
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kmlPolygon.setName(placemark.getName());
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kmlPolygon.setDescription(placemark.getDescription());
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kmlPolygonList.add(kmlPolygon);
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}
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/**
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* 保存线状数据
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*
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* @param kmlLineList 已有线状数据
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* @param coordinates 线状经纬度数据
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* @param placemark 线状名称
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*/
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private static void addLineStringToList(List<KmlLine> kmlLineList, List<Coordinate> coordinates, Placemark placemark) {
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KmlLine kmlLine = new KmlLine();
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kmlLine.setPoints(coordinates);
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kmlLine.setName(placemark.getName());
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kmlLine.setDescription(placemark.getDescription());
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kmlLineList.add(kmlLine);
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}
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/**
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* 保存点状数据
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*
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* @param kmlPointList 已有点状数据
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* @param coordinates 点状经纬度数据
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* @param placemark 点状名称
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*/
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private static void addPointToList(List<KmlPoint> kmlPointList, List<Coordinate> coordinates, Placemark placemark) {
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KmlPoint kmlPoint = new KmlPoint();
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kmlPoint.setName(placemark.getName());
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kmlPoint.setDescription(placemark.getDescription());
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kmlPoint.setPoints(coordinates);
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kmlPointList.add(kmlPoint);
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}
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/**
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* kmz 文件解析
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* @param inputStream
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* @throws IOException
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*/
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public static KmlData parseKMZFile(InputStream inputStream) throws IOException {
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KmlData kmlData = new KmlData();
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ArchiveInputStream archiveInputStream = new ZipArchiveInputStream(inputStream);
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ArchiveEntry entry;
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while ((entry = archiveInputStream.getNextEntry()) != null) {
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String name = entry.getName();
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if (name.toLowerCase().endsWith(".kml") || name.toLowerCase().endsWith(".kmz")) {
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// 如果发现.kml或.kmz文件，可以将其内容读取出来并传递给KMLParser处理
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kmlData = parseKML(archiveInputStream,kmlData);
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}
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}
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return kmlData;
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}
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/**
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* 解析kml 文件
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* @param kmlInputStream
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* @throws IOException
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*/
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public static KmlData parseKML(InputStream kmlInputStream, KmlData kmlData) {
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// 取出kml中的内容
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try (BufferedReader reader = new BufferedReader(new InputStreamReader(kmlInputStream))) {
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String line;
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StringBuffer xmlContent = new StringBuffer(1024);
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while ((line = reader.readLine()) != null) {
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// 处理每一行KML数据
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xmlContent.append(line);
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}
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// System.out.println(xmlContent);
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Kml kml = Kml.unmarshal(xmlContent.toString());
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ParsingKmlUtil pku = new ParsingKmlUtil();
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// 赋值
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kmlData = pku.getByKml(kml);
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} catch (IOException e) {
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e.printStackTrace();
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}
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// 返回
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return kmlData;
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}
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}
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