我在我创建的堆栈 Pane 布局中添加了两个 ImageView ,但是当我尝试在我的 StackPane 布局中添加按钮节点时,虽然图像工作正常,但按钮不允许程序运行并抛出这个我无法弄清楚的异常:
> > 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$155(LauncherImpl.java:182)
at java.lang.Thread.run(Thread.java:748)
Caused by: javafx.fxml.LoadException: Invalid identifier.
/C:/Users/Steli/Dropbox/Java_Projects/IntelliJ%20IDEA%20Projects/DokkanCardsPreview/out/production/DokkanCardsPreview/fxml/home.fxml:33
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2597)
at javafx.fxml.FXMLLoader.access$100(FXMLLoader.java:103)
at javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:901)
at javafx.fxml.FXMLLoader$InstanceDeclarationElement.processAttribute(FXMLLoader.java:971)
at javafx.fxml.FXMLLoader$Element.processStartElement(FXMLLoader.java:220)
at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:744)
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2707)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2527)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3214)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3175)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3148)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3124)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3104)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3097)
at com.spdesigns.dokkancardspreview.Main.start(Main.java:13)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$162(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$175(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$173(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$174(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
... 1 more
Exception running application com.spdesigns.dokkancardspreview.Main
Process finished with exit code 1
现在这是我的 fxml 文件:
<?xml version="1.0" encoding="UTF-8"?>
<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.image.ImageView?>
<?import javafx.scene.image.Image?>
<GridPane xmlns="http://javafx.com/javafx"
xmlns:fx="http://javafx.com/fxml"
fx:controller="com.spdesigns.dokkancardspreview.controllers.home"
stylesheets="/css/main.css"
fx:id="container"
prefHeight="400.0" prefWidth="600.0">
<children>
<Label text="Cards List" fx:id="listTitle" GridPane.rowIndex="0" GridPane.columnIndex="0"/>
<HBox fx:id="listViewAndImageContainer">
<children>
<ListView fx:id="listView" GridPane.rowIndex="1" GridPane.columnIndex="0" prefHeight="600"/>
</children>
<children>
<StackPane fx:id="ImageAndArrowButtonContainer">
<children>
<ImageView fx:id="imageView" fitWidth="400" fitHeight="600">
<Image url="/images/image_placeholder.png" fx:id="image"/>
</ImageView>
<ImageView fx:id="arrow" fitHeight="40" fitWidth="60">
<Image url="/images/arrow.png"/>
</ImageView>
<Button fx:id="arrow-button" prefHeight="40" prefWidth="60" text="test"></Button>
</children>
</StackPane>
</children>
</HBox>
</children>
</GridPane>
这是 main.java - 粘贴它,因为它在异常中被提及 - :
package com.spdesigns.dokkancardspreview;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class Main extends Application { @Override
public void start(Stage primaryStage) throws Exception{
Parent root = FXMLLoader.load(getClass().getResource("/fxml/home.fxml"));
primaryStage.setTitle("Dokkan Battle Card Preview");
primaryStage.setScene(new Scene(root, 900, 700));
primaryStage.setResizable(false);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
希望这里有人可以帮助我解决这个问题(这可能是一些“愚蠢”的东西,但仍然......我似乎无法找到这个异常的解决方案!
最佳答案
您不能在 id 中使用破折号 (-),因为它表示减号操作。将其替换为下划线 (_) 或使用驼峰命名法。
关于java - 在 javaFX 8 中添加 Button 节点会引发异常 - javafx.fxml.LoadException : Invalid identifier,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/46264139/