Java将读取Kml文件
参考:https://blog.csdn.net/yzj_xiaoyue/article/details/84889015
maven依赖
<dependencies>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.75</version>
</dependency>
<dependency>
<groupId>dom4j</groupId>
<artifactId>dom4j</artifactId>
<version>1.6.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/de.micromata.jak/JavaAPIforKml -->
<dependency>
<groupId>de.micromata.jak</groupId>
<artifactId>JavaAPIforKml</artifactId>
<version>2.2.0</version>
</dependency>
</dependencies>
点
import de.micromata.opengis.kml.v_2_2_0.Coordinate;
import java.util.List;
public class KmlPoint {
private List<Coordinate> points;
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public List<Coordinate> getPoints() {
return points;
}
public void setPoints(List<Coordinate> points) {
this.points = points;
}
}
线
import de.micromata.opengis.kml.v_2_2_0.Coordinate;
import java.util.List;
public class KmlLine {
private List<Coordinate> points;
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public List<Coordinate> getPoints() {
return points;
}
public void setPoints(List<Coordinate> points) {
this.points = points;
}
}
面
import de.micromata.opengis.kml.v_2_2_0.Coordinate;
import java.util.List;
/**
* @program: ParseKMLForJava
* @description:
* @author: Mr.Yue
* @create: 2018-12-04 21:12
**/
public class KmlPolygon {
private List<Coordinate> points;
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public List<Coordinate> getPoints() {
return points;
}
public void setPoints(List<Coordinate> points) {
this.points = points;
}
}
封装类KmlProperty ：用于获取点线面。
import java.util.List;
class KmlProperty {
private List<KmlPoint> kmlPoints;
private List<KmlLine> kmlLines;
private List<KmlPolygon> kmlPolygons;
public List<KmlPoint> getKmlPoints() {
return kmlPoints;
}
public void setKmlPoints(List<KmlPoint> kmlPoints) {
this.kmlPoints = kmlPoints;
}
public List<KmlLine> getKmlLines() {
return kmlLines;
}
public void setKmlLines(List<KmlLine> kmlLines) {
this.kmlLines = kmlLines;
}
public List<KmlPolygon> getKmlPolygons() {
return kmlPolygons;
}
public void setKmlPolygons(List<KmlPolygon> kmlPolygons) {
this.kmlPolygons = kmlPolygons;
}
}
KML文件解析方法
import de.micromata.opengis.kml.v_2_2_0.*;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
/**
* @program: my_project
* @description: KML文件解析：先获取kml文件的根节点，依次遍历当前节点的子节点的信息，
* 如果遇到节点属于Folder、Document则继续解析其子节点；反之则解析PlaceMark节点（主要解析LineString、Point、Polygon）。
* @author: Yue
* @create: 2018-12-01 12:39
**/
public class ParsingKmlUtil {
//以下三行都是自定义的KML类，用于获取名称name、所有点points、样式颜色color
private List<KmlPoint> kmlPointList = new ArrayList<>();
private List<KmlLine> kmlLineList = new ArrayList<>();
private List<KmlPolygon> kmlPolygonList = new ArrayList<>();
private KmlProperty kmlProperty = new KmlProperty();
/**
* 保存kml数据到临时表
*
* @param file 上传的文件实体
* @return 自定义的KML文件实体
*/
public KmlProperty parseKmlForJAK(File file) {
Kml kml = Kml.unmarshal(file);
Feature feature = kml.getFeature();
parseFeature(feature);
kmlProperty.setKmlPoints(kmlPointList);
kmlProperty.setKmlLines(kmlLineList);
kmlProperty.setKmlPolygons(kmlPolygonList);
return kmlProperty;
}
/**
* 解析kml节点信息
*
* @param feature 需要解析到要素信息
* @return
*/
private void parseFeature(Feature feature) {
if (feature != null) {
//判断根节点是否为Document
if (feature instanceof Document) {
List<Feature> featureList = ((Document) feature).getFeature();
//遍历已获取的节点信息(节点信息为List)，将list使用forEach进行遍历（同for、while）
featureList.forEach(documentFeature -> {
//判断遍历节点是否为PlaceMark，否则迭代解析
if (documentFeature instanceof Placemark) {
getPlaceMark((Placemark) documentFeature);
} else {
parseFeature(documentFeature);
}
}
);
} else if (feature instanceof Folder) {
//原理同上
List<Feature> featureList = ((Folder) feature).getFeature();
featureList.forEach(documentFeature -> {
if (documentFeature instanceof Placemark) {
getPlaceMark((Placemark) documentFeature);
}
{
parseFeature(documentFeature);
}
}
);
}
}
}
/**
* 解析PlaceMark节点下的信息
*
* @return
*/
private void getPlaceMark(Placemark placemark) {
Geometry geometry = placemark.getGeometry();
String name = placemark.getName();
parseGeometry(name, geometry);
}
/**
* 解析PlaceMark节点下的信息
*
* @return
*/
private void parseGeometry(String name, Geometry geometry) {
if (geometry != null) {
if (geometry instanceof Polygon) {
Polygon polygon = (Polygon) geometry;
Boundary outerBoundaryIs = polygon.getOuterBoundaryIs();
if (outerBoundaryIs != null) {
LinearRing linearRing = outerBoundaryIs.getLinearRing();
if (linearRing != null) {
List<Coordinate> coordinates = linearRing.getCoordinates();
if (coordinates != null) {
outerBoundaryIs = ((Polygon) geometry).getOuterBoundaryIs();
addPolygonToList(kmlPolygonList, name, outerBoundaryIs);
}
}
}
} else if (geometry instanceof LineString) {
LineString lineString = (LineString) geometry;
List<Coordinate> coordinates = lineString.getCoordinates();
if (coordinates != null) {
coordinates = ((LineString) geometry).getCoordinates();
addLineStringToList(kmlLineList, coordinates, name);
}
} else if (geometry instanceof Point) {
Point point = (Point) geometry;
List<Coordinate> coordinates = point.getCoordinates();
if (coordinates != null) {
coordinates = ((Point) geometry).getCoordinates();
addPointToList(kmlPointList, coordinates, name);
}
} else if (geometry instanceof MultiGeometry) {
List<Geometry> geometries = ((MultiGeometry) geometry).getGeometry();
for (Geometry geometryToMult : geometries) {
Boundary outerBoundaryIs;
List<Coordinate> coordinates;
if (geometryToMult instanceof Point) {
coordinates = ((Point) geometryToMult).getCoordinates();
addPointToList(kmlPointList, coordinates, name);
} else if (geometryToMult instanceof LineString) {
coordinates = ((LineString) geometryToMult).getCoordinates();
addLineStringToList(kmlLineList, coordinates, name);
} else if (geometryToMult instanceof Polygon) {
outerBoundaryIs = ((Polygon) geometryToMult).getOuterBoundaryIs();
addPolygonToList(kmlPolygonList, name, outerBoundaryIs);
}
}
}
}
}
/**
* 将kml中所有面添加到一个list
*
* @return
*/
private void addPolygonToList(List<KmlPolygon> kmlPolygonList, String name, Boundary outerBoundaryIs) {
LinearRing linearRing;
List<Coordinate> coordinates;
linearRing = outerBoundaryIs.getLinearRing();//面
coordinates = linearRing.getCoordinates();
KmlPolygon kmlPolygon = new KmlPolygon();
kmlPolygon.setPoints(coordinates);
kmlPolygon.setName(name);
kmlPolygonList.add(kmlPolygon);
}
/**
* 将kml中所有线添加到一个list
*
* @return
*/
private void addLineStringToList(List<KmlLine> kmlLineList, List<Coordinate> coordinates, String name) {
KmlLine kmlLine = new KmlLine();
kmlLine.setPoints(coordinates);
kmlLine.setName(name);
kmlLineList.add(kmlLine);
}
/**
* 将kml中所有点添加到一个list
*
* @return
*/
private void addPointToList(List<KmlPoint> kmlPointList, List<Coordinate> coordinates, String name) {
KmlPoint kmlPoint = new KmlPoint();
kmlPoint.setName(name);
kmlPoint.setPoints(coordinates);
kmlPointList.add(kmlPoint);
}
}
KML解析方法调用
import java.io.File;
public class Main {
public static void main(String[] args) {
KmlProperty kmlProperty;
ParsingKmlUtil parsingKmlUtil =new ParsingKmlUtil();
File file = new File("src/point.kml");
kmlProperty = parsingKmlUtil.parseKmlForJAK(file);
assert kmlProperty != null;
if (kmlProperty.getKmlPoints().size() > 0) {
for (KmlPoint k : kmlProperty.getKmlPoints()) {
System.out.println(k.getName());
}
System.out.println("点");
}
if (kmlProperty.getKmlLines().size() > 0) {
for (KmlLine k : kmlProperty.getKmlLines()) {
System.out.println(k.getName());
}
System.out.println("线");
}
if (kmlProperty.getKmlPoints().size() > 0) {
for (KmlPoint k : kmlProperty.getKmlPoints()) {
System.out.println(k.getPoints());
}
System.out.println("面");
}
}
}
自己功能设置
/**
* 解析kml节点信息
*
* @param feature 需要解析到要素信息
* @return
*/
private void parseFeature(Feature feature) {
if (feature != null) {
//判断根节点是否为Document
if (feature instanceof Document) {
List<Feature> featureList = ((Document) feature).getFeature();
//遍历已获取的节点信息(节点信息为List)，将list使用forEach进行遍历（同for、while）
featureList.forEach(documentFeature -> {
//判断遍历节点是否为PlaceMark，否则迭代解析
if (documentFeature instanceof Placemark) {
// feature.getName() 获取省市区乡镇
if (!feature.getName().equals("乡镇")) {
if (parentName != null && parentName != ""){
parentName = parentName + "-" ;
}
parentName = parentName + documentFeature.getName();
sonName=parentName;
}else {
sonName = parentName + "-" + documentFeature.getName();
}
documentFeature.setName(sonName);
getPlaceMark((Placemark) documentFeature);
} else {
parseFeature(documentFeature);
}
}
);
} else if (feature instanceof Folder) {
//原理同上
List<Feature> featureList = ((Folder) feature).getFeature();
featureList.forEach(documentFeature -> {
if (documentFeature instanceof Placemark) {
getPlaceMark((Placemark) documentFeature);
}
{
parseFeature(documentFeature);
}
}
);
}
}
}
