java - 从 kml 获取坐标时出错
问题描述
我试图从 KML 文件中获取一些坐标，代码没有给我任何错误，但在运行时我得到了这个：
Exception in thread "main" java.lang.ClassCastException: class de.micromata.opengis.kml.v_2_2_0.Document cannot be cast to class de.micromata.opengis.kml.v_2_2_0.Placemark (de.micromata.opengis.kml.v_2_2_0.Document and de.micromata.opengis.kml.v_2_2_0.Placemark are in unnamed module of loader 'app')
at user.it.User_Ex.Open_File.open(Open_File.java:18)
at user.it.User_Ex.UserExApplication.main(UserExApplication.java:13)
这是我的代码：
public class Open_File{
public void open(){
System.out.println("This is KML test");
Kml kml = Kml.unmarshal(new File("C:\\Users\\USER\\Desktop\\Sab\\zone_monopattini\\Fisciano.kml"));
Feature feature = kml.getFeature();
parseFeature(feature);
Placemark placemark = (Placemark) kml.getFeature();
Polygon geom = (Polygon) placemark.getGeometry();
LinearRing linearRing = geom.getOuterBoundaryIs().getLinearRing();
List<Coordinate> coordinates = linearRing.getCoordinates();
for (Coordinate coordinate : coordinates) {
System.out.println(coordinate.getLatitude());
System.out.println(coordinate.getLongitude());
System.out.println(coordinate.getAltitude());
}
}
private static void parseFeature(Feature feature) {
if(feature != null) {
if(feature instanceof Document) {
Document document = (Document) feature;
List<Feature> featureList = document.getFeature();
for(Feature documentFeature : featureList) {
if(documentFeature instanceof Placemark) {
Placemark placemark = (Placemark) documentFeature;
Geometry geometry = placemark.getGeometry();
parseGeometry(geometry);
}
}
}
}
}
private static void parseGeometry(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) {
for(Coordinate coordinate : coordinates) {
parseCoordinate(coordinate);
}
}
}
}
}
}
}
private static void parseCoordinate(Coordinate coordinate) {
if(coordinate != null) {
System.out.println("Longitude: " + coordinate.getLongitude());
System.out.println("Latitude : " + coordinate.getLatitude());
System.out.println("Altitude : " + coordinate.getAltitude());
System.out.println("");
}
}
}
这是我的 KML：
<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2">
<Document>
<name>Fisciano</name>
<description/>
<Style id="icon-1899-0288D1-nodesc-normal">
<IconStyle>
<color>ffd18802</color>
<scale>1</scale>
<Icon>
<href>https://www.gstatic.com/mapspro/images/stock/503-wht-blank_maps.png</href>
</Icon>
<hotSpot x="32" xunits="pixels" y="64" yunits="insetPixels"/>
</IconStyle>
<LabelStyle>
<scale>0</scale>
</LabelStyle>
<BalloonStyle>
<text><![CDATA[<h3>$[name]</h3>]]></text>
</BalloonStyle>
</Style>
<Style id="icon-1899-0288D1-nodesc-highlight">
<IconStyle>
<color>ffd18802</color>
<scale>1</scale>
<Icon>
<href>https://www.gstatic.com/mapspro/images/stock/503-wht-blank_maps.png</href>
</Icon>
<hotSpot x="32" xunits="pixels" y="64" yunits="insetPixels"/>
</IconStyle>
<LabelStyle>
<scale>1</scale>
</LabelStyle>
<BalloonStyle>
<text><![CDATA[<h3>$[name]</h3>]]></text>
</BalloonStyle>
</Style>
<StyleMap id="icon-1899-0288D1-nodesc">
<Pair>
<key>normal</key>
<styleUrl>#icon-1899-0288D1-nodesc-normal</styleUrl>
</Pair>
<Pair>
<key>highlight</key>
<styleUrl>#icon-1899-0288D1-nodesc-highlight</styleUrl>
</Pair>
</StyleMap>
<Style id="icon-1899-DB4436-nodesc-normal">
<IconStyle>
<color>ff3644db</color>
<scale>1</scale>
<Icon>
<href>https://www.gstatic.com/mapspro/images/stock/503-wht-blank_maps.png</href>
</Icon>
<hotSpot x="32" xunits="pixels" y="64" yunits="insetPixels"/>
</IconStyle>
<LabelStyle>
<scale>0</scale>
</LabelStyle>
<BalloonStyle>
<text><![CDATA[<h3>$[name]</h3>]]></text>
</BalloonStyle>
</Style>
<Style id="icon-1899-DB4436-nodesc-highlight">
<IconStyle>
<color>ff3644db</color>
<scale>1</scale>
<Icon>
<href>https://www.gstatic.com/mapspro/images/stock/503-wht-blank_maps.png</href>
</Icon>
<hotSpot x="32" xunits="pixels" y="64" yunits="insetPixels"/>
</IconStyle>
<LabelStyle>
<scale>1</scale>
</LabelStyle>
<BalloonStyle>
<text><![CDATA[<h3>$[name]</h3>]]></text>
</BalloonStyle>
</Style>
<StyleMap id="icon-1899-DB4436-nodesc">
<Pair>
<key>normal</key>
<styleUrl>#icon-1899-DB4436-nodesc-normal</styleUrl>
</Pair>
<Pair>
<key>highlight</key>
<styleUrl>#icon-1899-DB4436-nodesc-highlight</styleUrl>
</Pair>
</StyleMap>
<Style id="line-1267FF-5000-nodesc-normal">
<LineStyle>
<color>ffff6712</color>
<width>5</width>
</LineStyle>
<BalloonStyle>
<text><![CDATA[<h3>$[name]</h3>]]></text>
</BalloonStyle>
</Style>
<Style id="line-1267FF-5000-nodesc-highlight">
<LineStyle>
<color>ffff6712</color>
<width>7.5</width>
</LineStyle>
<BalloonStyle>
<text><![CDATA[<h3>$[name]</h3>]]></text>
</BalloonStyle>
</Style>
<StyleMap id="line-1267FF-5000-nodesc">
<Pair>
<key>normal</key>
<styleUrl>#line-1267FF-5000-nodesc-normal</styleUrl>
</Pair>
<Pair>
<key>highlight</key>
<styleUrl>#line-1267FF-5000-nodesc-highlight</styleUrl>
</Pair>
</StyleMap>
<Folder>
<name>Fisciano</name>
<Placemark>
<name>Fisciano</name>
<styleUrl>#icon-1899-0288D1-nodesc</styleUrl>
<Point>
<coordinates>
14.796561,40.773194,0
</coordinates>
</Point>
</Placemark>
</Folder>
<Folder>
<name>Percorso 1 - Terminal - Casa</name>
<Placemark>
<name>Percorso 1 - Terminal - Casa</name>
<styleUrl>#line-1267FF-5000-nodesc</styleUrl>
<LineString>
<tessellate>1</tessellate>
<coordinates>
14.79184,40.77456,0
14.79175,40.77461,0
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14.79164,40.77467,0
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14.8054,40.77155,0
14.80561,40.77155,0
</coordinates>
</LineString>
</Placemark>
<Placemark>
<name>Fisciano-unisa, 84084 Fisciano SA, Italia</name>
<styleUrl>#icon-1899-DB4436-nodesc</styleUrl>
<Point>
<coordinates>
14.791835,40.7745627,0
</coordinates>
</Point>
</Placemark>
<Placemark>
<name>Via della Rimembranza, 45, 84084 Fisciano SA, Italia</name>
<styleUrl>#icon-1899-DB4436-nodesc</styleUrl>
<Point>
<coordinates>
14.8056062,40.7715473,0
</coordinates>
</Point>
</Placemark>
</Folder>
<Folder>
<name>Percorso 2 - Terminal - Biblioteca</name>
<Placemark>
<name>Percorso 2 - Terminal - Biblioteca</name>
<styleUrl>#line-1267FF-5000-nodesc</styleUrl>
<LineString>
<tessellate>1</tessellate>
<coordinates>
14.79109,40.77498,0
14.7912,40.77493,0
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</coordinates>
</LineString>
</Placemark>
<Placemark>
<name>Via delle Stelle, 2, 84084 Fisciano SA, Italia</name>
<styleUrl>#icon-1899-DB4436-nodesc</styleUrl>
<Point>
<coordinates>
14.7910921,40.7749781,0
</coordinates>
</Point>
</Placemark>
<Placemark>
<name>Rettorato, 84084 Fisciano SA, Italia</name>
<styleUrl>#icon-1899-DB4436-nodesc</styleUrl>
<Point>
<coordinates>
14.7916337,40.7689811,0
</coordinates>
</Point>
</Placemark>
</Folder>
</Document>
</kml>这是我的 pom.xml 文件：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.5.3</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>user.it</groupId>
<artifactId>User_Ex</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>User_Ex</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
<dependency>
<groupId>org.glassfish.jaxb</groupId>
<artifactId>jaxb-runtime</artifactId>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>在构建路径中，我有这些用于使用 KML：
- JavaApiforKml-2.2.1.jar
- jax-b-2.3.0.jar
我该如何解决？或者我可以用另一种方法代替这个方法吗？
解决方案
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