使用由 fxml (scenebuilder) 制作的进度条来使用方法中的值
Use progressbar made with fxml (scenebuilder) to use values from a method
我想让我的进度条显示一个方法的值，该方法是 returns 双精度值，但它不起作用。但我不认为这是主要问题，因为即使我只使用特定数字，它也不起作用。请帮助我，在此先感谢。这是一个具体的问题，所以我搜索了 cery 很长时间但没有结果，所以如果你知道更好地做我想做的事情或者可能知道一个可以帮助的网站请 link 它或告诉我。
我的fxml文件控制器（相关代码已标出）：
package sample;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ProgressBar;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.Pane;
import javafx.stage.Stage;
import javafx.event.EventHandler;
import javafx.scene.input.MouseEvent;
import java.io.IOException;
import java.util.ResourceBundle;
import java.util.ArrayList;
import java.util.Random;
public class Controller {
playercard iceborn = new playercard(3, false, true, 0);
playercard fireball = new playercard(5, true, false, 0);
playercard warmogs = new playercard(0, false, false, 10);
ArrayList<playercard> playerhand = new ArrayList<>();
*******************************
public void add() {
playerhand.add(iceborn);
playerhand.add(fireball);
playerhand.add(warmogs);
}
public playercard output() {
Random rand = new Random();
int xzufallszahl = rand.nextInt(3);
int zufallszahl = xzufallszahl;
return playerhand.get(zufallszahl);
}
*********************************
@FXML
Stage stage;
public Button Startgameb;
@FXML
public ProgressBar enemyhpnow;
@FXML
public void Startgamebaction(ActionEvent event) throws IOException{
***************
add();
**************
Parent root = FXMLLoader.load(getClass().getResource("Menu.fxml"));
Pane root1 = FXMLLoader.load(getClass().getResource("Tutorial.fxml"));
Pane root2 = FXMLLoader.load(getClass().getResource("Game.fxml"));
Scene tutorialscene = new Scene(root1, 900, 600);
Scene gamescene = new Scene(root2, 900, 600);
Image card = new Image("sample/card.jpg");
ImageView firstplayercard = new ImageView();
firstplayercard.setImage(card);
firstplayercard.setFitWidth(120);
firstplayercard.setFitHeight(160);
firstplayercard.setLayoutX(50);
firstplayercard.setLayoutY(430);
ImageView secondplayercard = new ImageView();
secondplayercard.setImage(card);
secondplayercard.setFitWidth(120);
secondplayercard.setFitHeight(160);
secondplayercard.setLayoutX(175);
secondplayercard.setLayoutY(430);
ImageView thirdplayercard = new ImageView();
thirdplayercard.setImage(card);
thirdplayercard.setFitWidth(120);
thirdplayercard.setFitHeight(160);
thirdplayercard.setLayoutX(300);
thirdplayercard.setLayoutY(430);
ImageView fourthplayercard = new ImageView();
fourthplayercard.setImage(card);
fourthplayercard.setFitWidth(120);
fourthplayercard.setFitHeight(160);
fourthplayercard.setLayoutX(425);
fourthplayercard.setLayoutY(430);
ImageView fifthplayercard = new ImageView();
fifthplayercard.setImage(card);
fifthplayercard.setFitWidth(120);
fifthplayercard.setFitHeight(160);
fifthplayercard.setLayoutX(550);
fifthplayercard.setLayoutY(430);
root2.getChildren().addAll(firstplayercard, secondplayercard, thirdplayercard, fourthplayercard, fifthplayercard);
**********************************
firstplayercard.setOnMouseClicked(e ->{
enemyhpnow.setProgress(output().activate());
});
**********************************
Stage stage;
stage=(Stage) Startgameb.getScene().getWindow();
stage.setScene(gamescene);
stage.show();
}
}
这就是 class 我制作的对象，我想使用的值：
package sample;
import javafx.fxml.FXML;
import javafx.scene.control.ProgressBar;
public class playercard {
int dmgovertime;
boolean fire;
boolean ice;
int getlife;
int playerhp = 100;
int enemyhp = 300;
public playercard(int dmgovertime, boolean fire, boolean ice, int getlife) {
this.dmgovertime = dmgovertime;
this.fire = fire;
this.ice = ice;
this.getlife = getlife;
}
public double activate(){
enemyhp = enemyhp - dmgovertime + getlife;
double xenemyhp = enemyhp;
System.out.println(enemyhp);
return xenemyhp;
}
}
这是我的 fxml 文件（相关文件）：
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.text.*?>
<?import javafx.scene.image.*?>
<?import javafx.scene.shape.*?>
<?import javafx.scene.control.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<Pane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="600.0" prefWidth="900.0" styleClass="hintergrund1" stylesheets="@style.css" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1">
<children>
<ProgressBar fx:id="playerhp" layoutX="100.0" layoutY="20.0" prefHeight="20.0" prefWidth="700.0" progress="0.87" />
<Label layoutX="425.0" layoutY="-14.0" prefHeight="50.0" prefWidth="50.0" text="100 HP" />
<ImageView fitHeight="351.0" fitWidth="373.0" layoutX="273.0" layoutY="40.0" pickOnBounds="true" preserveRatio="true">
<image>
<Image url="@enemy.png" />
</image>
</ImageView>
<Label layoutX="812.0" layoutY="15.0" prefHeight="50.0" prefWidth="66.0" text="1/3" />
<Label layoutX="14.0" layoutY="11.0" prefHeight="59.0" prefWidth="77.0" text="1/5" />
<ProgressBar fx:id="enemyhpnow" layoutX="283.0" layoutY="391.0" prefHeight="31.0" prefWidth="353.0" progress="0.75" />
<Label layoutX="431.0" layoutY="374.0" text="250 HP" />
<ImageView fitHeight="160.0" fitWidth="120.0" layoutX="758.0" layoutY="422.0" pickOnBounds="true" preserveRatio="true">
<image>
<Image url="@carddeck.png" />
</image>
</ImageView>
</children>
</Pane>
我的主要：
package sample;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.Pane;
import javafx.stage.Stage;
public class Main extends Application {
public static void main(String[] args) {
launch(args);
}
@Override
public void start(Stage primaryStage) throws Exception{
Parent root = FXMLLoader.load(getClass().getResource("Menu.fxml"));
Scene menuscene = new Scene(root, 900, 600);
primaryStage.setTitle("Project: Spark!");
primaryStage.setScene(menuscene);
primaryStage.show();
}
}
这就是我用 enemyhpnow.setProgress(output().activate()); 得到的错误来自我的控制器：
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException
at sample.Controller.lambda$Startgamebaction[=14=](Controller.java:100)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Scene$ClickGenerator.postProcess(Scene.java:3470)
at javafx.scene.Scene$ClickGenerator.access00(Scene.java:3398)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3766)
at javafx.scene.Scene$MouseHandler.access00(Scene.java:3485)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:380)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:294)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent4(GlassViewEventHandler.java:416)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:415)
at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
at com.sun.glass.ui.View.notifyMouse(View.java:937)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null8(WinApplication.java:191)
at java.lang.Thread.run(Thread.java:745)
Process finished with exit code 0
这就是我使用enemyhpnow.setProgress(1)时的错误代码；也在我的控制器中：
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException
at sample.Controller.lambda$Startgamebaction[=14=](Controller.java:100)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Scene$ClickGenerator.postProcess(Scene.java:3470)
at javafx.scene.Scene$ClickGenerator.access00(Scene.java:3398)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3766)
at javafx.scene.Scene$MouseHandler.access00(Scene.java:3485)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:380)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:294)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent4(GlassViewEventHandler.java:416)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:415)
at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
at com.sun.glass.ui.View.notifyMouse(View.java:937)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null8(WinApplication.java:191)
at java.lang.Thread.run(Thread.java:745)
Process finished with exit code 0
您忘记定义 Controller 我在您的代码中没有看到它 fxml:
fx:controller="yourController"
我想让我的进度条显示一个方法的值，该方法是 returns 双精度值，但它不起作用。但我不认为这是主要问题，因为即使我只使用特定数字，它也不起作用。请帮助我，在此先感谢。这是一个具体的问题，所以我搜索了 cery 很长时间但没有结果，所以如果你知道更好地做我想做的事情或者可能知道一个可以帮助的网站请 link 它或告诉我。
我的fxml文件控制器（相关代码已标出）：
package sample;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ProgressBar;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.Pane;
import javafx.stage.Stage;
import javafx.event.EventHandler;
import javafx.scene.input.MouseEvent;
import java.io.IOException;
import java.util.ResourceBundle;
import java.util.ArrayList;
import java.util.Random;
public class Controller {
playercard iceborn = new playercard(3, false, true, 0);
playercard fireball = new playercard(5, true, false, 0);
playercard warmogs = new playercard(0, false, false, 10);
ArrayList<playercard> playerhand = new ArrayList<>();
*******************************
public void add() {
playerhand.add(iceborn);
playerhand.add(fireball);
playerhand.add(warmogs);
}
public playercard output() {
Random rand = new Random();
int xzufallszahl = rand.nextInt(3);
int zufallszahl = xzufallszahl;
return playerhand.get(zufallszahl);
}
*********************************
@FXML
Stage stage;
public Button Startgameb;
@FXML
public ProgressBar enemyhpnow;
@FXML
public void Startgamebaction(ActionEvent event) throws IOException{
***************
add();
**************
Parent root = FXMLLoader.load(getClass().getResource("Menu.fxml"));
Pane root1 = FXMLLoader.load(getClass().getResource("Tutorial.fxml"));
Pane root2 = FXMLLoader.load(getClass().getResource("Game.fxml"));
Scene tutorialscene = new Scene(root1, 900, 600);
Scene gamescene = new Scene(root2, 900, 600);
Image card = new Image("sample/card.jpg");
ImageView firstplayercard = new ImageView();
firstplayercard.setImage(card);
firstplayercard.setFitWidth(120);
firstplayercard.setFitHeight(160);
firstplayercard.setLayoutX(50);
firstplayercard.setLayoutY(430);
ImageView secondplayercard = new ImageView();
secondplayercard.setImage(card);
secondplayercard.setFitWidth(120);
secondplayercard.setFitHeight(160);
secondplayercard.setLayoutX(175);
secondplayercard.setLayoutY(430);
ImageView thirdplayercard = new ImageView();
thirdplayercard.setImage(card);
thirdplayercard.setFitWidth(120);
thirdplayercard.setFitHeight(160);
thirdplayercard.setLayoutX(300);
thirdplayercard.setLayoutY(430);
ImageView fourthplayercard = new ImageView();
fourthplayercard.setImage(card);
fourthplayercard.setFitWidth(120);
fourthplayercard.setFitHeight(160);
fourthplayercard.setLayoutX(425);
fourthplayercard.setLayoutY(430);
ImageView fifthplayercard = new ImageView();
fifthplayercard.setImage(card);
fifthplayercard.setFitWidth(120);
fifthplayercard.setFitHeight(160);
fifthplayercard.setLayoutX(550);
fifthplayercard.setLayoutY(430);
root2.getChildren().addAll(firstplayercard, secondplayercard, thirdplayercard, fourthplayercard, fifthplayercard);
**********************************
firstplayercard.setOnMouseClicked(e ->{
enemyhpnow.setProgress(output().activate());
});
**********************************
Stage stage;
stage=(Stage) Startgameb.getScene().getWindow();
stage.setScene(gamescene);
stage.show();
}
}
这就是 class 我制作的对象，我想使用的值：
package sample;
import javafx.fxml.FXML;
import javafx.scene.control.ProgressBar;
public class playercard {
int dmgovertime;
boolean fire;
boolean ice;
int getlife;
int playerhp = 100;
int enemyhp = 300;
public playercard(int dmgovertime, boolean fire, boolean ice, int getlife) {
this.dmgovertime = dmgovertime;
this.fire = fire;
this.ice = ice;
this.getlife = getlife;
}
public double activate(){
enemyhp = enemyhp - dmgovertime + getlife;
double xenemyhp = enemyhp;
System.out.println(enemyhp);
return xenemyhp;
}
}
这是我的 fxml 文件（相关文件）：
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.text.*?>
<?import javafx.scene.image.*?>
<?import javafx.scene.shape.*?>
<?import javafx.scene.control.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<Pane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="600.0" prefWidth="900.0" styleClass="hintergrund1" stylesheets="@style.css" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1">
<children>
<ProgressBar fx:id="playerhp" layoutX="100.0" layoutY="20.0" prefHeight="20.0" prefWidth="700.0" progress="0.87" />
<Label layoutX="425.0" layoutY="-14.0" prefHeight="50.0" prefWidth="50.0" text="100 HP" />
<ImageView fitHeight="351.0" fitWidth="373.0" layoutX="273.0" layoutY="40.0" pickOnBounds="true" preserveRatio="true">
<image>
<Image url="@enemy.png" />
</image>
</ImageView>
<Label layoutX="812.0" layoutY="15.0" prefHeight="50.0" prefWidth="66.0" text="1/3" />
<Label layoutX="14.0" layoutY="11.0" prefHeight="59.0" prefWidth="77.0" text="1/5" />
<ProgressBar fx:id="enemyhpnow" layoutX="283.0" layoutY="391.0" prefHeight="31.0" prefWidth="353.0" progress="0.75" />
<Label layoutX="431.0" layoutY="374.0" text="250 HP" />
<ImageView fitHeight="160.0" fitWidth="120.0" layoutX="758.0" layoutY="422.0" pickOnBounds="true" preserveRatio="true">
<image>
<Image url="@carddeck.png" />
</image>
</ImageView>
</children>
</Pane>
我的主要：
package sample;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.Pane;
import javafx.stage.Stage;
public class Main extends Application {
public static void main(String[] args) {
launch(args);
}
@Override
public void start(Stage primaryStage) throws Exception{
Parent root = FXMLLoader.load(getClass().getResource("Menu.fxml"));
Scene menuscene = new Scene(root, 900, 600);
primaryStage.setTitle("Project: Spark!");
primaryStage.setScene(menuscene);
primaryStage.show();
}
}
这就是我用 enemyhpnow.setProgress(output().activate()); 得到的错误来自我的控制器：
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException
at sample.Controller.lambda$Startgamebaction[=14=](Controller.java:100)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Scene$ClickGenerator.postProcess(Scene.java:3470)
at javafx.scene.Scene$ClickGenerator.access00(Scene.java:3398)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3766)
at javafx.scene.Scene$MouseHandler.access00(Scene.java:3485)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:380)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:294)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent4(GlassViewEventHandler.java:416)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:415)
at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
at com.sun.glass.ui.View.notifyMouse(View.java:937)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null8(WinApplication.java:191)
at java.lang.Thread.run(Thread.java:745)
Process finished with exit code 0
这就是我使用enemyhpnow.setProgress(1)时的错误代码；也在我的控制器中：
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException
at sample.Controller.lambda$Startgamebaction[=14=](Controller.java:100)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Scene$ClickGenerator.postProcess(Scene.java:3470)
at javafx.scene.Scene$ClickGenerator.access00(Scene.java:3398)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3766)
at javafx.scene.Scene$MouseHandler.access00(Scene.java:3485)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:380)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:294)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent4(GlassViewEventHandler.java:416)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:415)
at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
at com.sun.glass.ui.View.notifyMouse(View.java:937)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null8(WinApplication.java:191)
at java.lang.Thread.run(Thread.java:745)
Process finished with exit code 0
您忘记定义 Controller 我在您的代码中没有看到它 fxml:
fx:controller="yourController"