晚上好，
最后，我决定加入StackOverflow社区。首先，我想说：感谢所有使这个社区成为可能的人（对与会者和创作者）。这个网站为我的编码问题提供了很多帮助。
..这个是例外。我已经谷歌搜索了两天来帮助解决这个问题，但我一直无法解决它。任何帮助或提示将不胜感激。
我的目标：将GmapsFX添加到JavaFX应用程序。
首先，我尝试将GmapsFX添加到JavaFX FXML应用程序，但收到了很多编译错误，我无法解决。接下来，我决定采用更简单的方法，并尝试将其实现为纯JavaFX应用程序。但令我惊讶的是，我注意到我在JavaFX应用程序中也收到了相同的编译错误。
我正在使用：
主要班级：
package fxmaps_2;
import com.lynden.gmapsfx.GoogleMapView;
import com.lynden.gmapsfx.MapComponentInitializedListener;
import com.lynden.gmapsfx.javascript.object.GoogleMap;
import com.lynden.gmapsfx.javascript.object.LatLong;
import com.lynden.gmapsfx.javascript.object.MapOptions;
import com.lynden.gmapsfx.javascript.object.MapTypeIdEnum;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.stage.Stage;
/**
*
* @author Tommi
*/
public class FXMaps_2 extends Application implements MapComponentInitializedListener {
GoogleMapView mapView;
GoogleMap map;
@Override
public void start(Stage primaryStage) {
mapView = new GoogleMapView();
mapView.addMapInitializedListener(this);
Scene scene = new Scene(mapView, 300, 250);
primaryStage.setTitle("JavaFX gMap");
primaryStage.setScene(scene);
primaryStage.show();
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
launch(fxmaps_2.FXMaps_2.class, new String[0]);
}
@Override
public void mapInitialized() {
MapOptions mapOptions = new MapOptions();
mapOptions.center(new LatLong(47.6097, -122.3331))
.mapType(MapTypeIdEnum.ROADMAP)
.overviewMapControl(false)
.panControl(false)
.rotateControl(false)
.scaleControl(false)
.streetViewControl(false)
.zoomControl(false)
.zoom(12);
map = mapView.createMap(mapOptions);
}
}
尝试运行项目后的输出堆栈：
ant -f C:\\Users\\Tommi\\Documents\\NetBeansProjects\\FXMaps_2 jfxsa-run
init:
Deleting: C:\Users\Tommi\Documents\NetBeansProjects\FXMaps_2\build\built-jar.properties
deps-jar:
Updating property file: C:\Users\Tommi\Documents\NetBeansProjects\FXMaps_2\build\built-jar.properties
compile:
Deleting directory C:\Users\Tommi\Documents\NetBeansProjects\FXMaps_2\dist\lib
Copying 2 files to C:\Users\Tommi\Documents\NetBeansProjects\FXMaps_2\dist\lib
Detected JavaFX Ant API version 1.3
jfx-deployment:
jar:
Copying 14 files to C:\Users\Tommi\Documents\NetBeansProjects\FXMaps_2\dist\run1501132311
jfx-project-run:
Executing C:\Users\Tommi\Documents\NetBeansProjects\FXMaps_2\dist\run1501132311\FXMaps_2.jar using platform C:\Program Files (x86)\Java\jdk1.8.0_152\jre/bin/java
Exception in Application start method
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$154(LauncherImpl.java:182)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException
at com.lynden.gmapsfx.GoogleMapView.lambda$new$4(GoogleMapView.java:221)
at com.lynden.gmapsfx.GoogleMapView.<init>(GoogleMapView.java:228)
at com.lynden.gmapsfx.GoogleMapView.<init>(GoogleMapView.java:159)
at com.lynden.gmapsfx.GoogleMapView.<init>(GoogleMapView.java:137)
at com.lynden.gmapsfx.GoogleMapView.<init>(GoogleMapView.java:80)
at com.lynden.gmapsfx.GoogleMapView.<init>(GoogleMapView.java:76)
at fxmaps_2.FXMaps_2.start(FXMaps_2.java:30)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$161(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$174(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$172(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$173(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$147(WinApplication.java:177)
... 1 more
Exception running application fxmaps_2.FXMaps_2
Java Result: 1
Deleting directory C:\Users\Tommi\Documents\NetBeansProjects\FXMaps_2\dist\run1501132311
jfxsa-run:
BUILD SUCCESSFUL (total time: 1 second)
如果我已经理解正确：问题是从GoogleMapView lambda表达式的某处产生的？有一些东西导致了nullpointerexception，这又导致了整个＆＃34; Run＆＃34;取消？
任何提示/提示都会受到关注。
感谢。
*编辑：添加了gfmapsx版本号