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我试图用黑色背景创建一个非常简单的VBox。就这样。没有其他的。我用FXML来形容我的VBox。加载FXML时发生javafx.fxml.LoadException
sample.fxml：
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.layout.VBox?>
<VBox xmlns:fx="http://javafx.com/fxml" fx:controller="sample.Controller" alignment="CENTER" background="#000000ff">
</VBox>
Controller.java：
package sample;
public class Controller {
// No code written. Not required.
}
Main.java：
package sample;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
/* Code auto generated by IDEA IDE. */
public class Main extends Application {
@Override
public void start(Stage primaryStage) throws Exception{
Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
primaryStage.setTitle("Adi's login app");
primaryStage.setScene(new Scene(root, 300, 275));
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
我使用IDEA IntelliJ IDE。而且我收到以下错误：
Exception in Application start method
Exception in thread "main" java.lang.RuntimeException: Exception in Application start method
\t at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
\t at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$152(LauncherImpl.java:182)
\t at com.sun.javafx.application.LauncherImpl$$Lambda$2/51228289.run(Unknown Source)
\t at java.lang.Thread.run(Thread.java:745)
Caused by: javafx.fxml.LoadException:
/Users/aditya/Desktop/workspace/Java/LoginApp/out/production/LoginApp/sample/sample.fxml:5
\t at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2605)
\t at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2583)
\t at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2445)
\t at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3218)
\t at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3179)
\t at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3152)
\t at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3128)
\t at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3108)
\t at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3101)
\t at sample.Main.start(Main.java:13)
\t at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$159(LauncherImpl.java:863)
\t at com.sun.javafx.application.LauncherImpl$$Lambda$53/87719178.run(Unknown Source)
\t at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$172(PlatformImpl.java:326)
\t at com.sun.javafx.application.PlatformImpl$$Lambda$49/2001689116.run(Unknown Source)
\t at com.sun.javafx.application.PlatformImpl.lambda$null$170(PlatformImpl.java:295)
\t at com.sun.javafx.application.PlatformImpl$$Lambda$51/779320874.run(Unknown Source)
\t at java.security.AccessController.doPrivileged(Native Method)
\t at com.sun.javafx.application.PlatformImpl.lambda$runLater$171(PlatformImpl.java:294)
\t at com.sun.javafx.application.PlatformImpl$$Lambda$50/1474675095.run(Unknown Source)
\t at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
Caused by: java.lang.IllegalArgumentException: Unable to coerce #000000ff to class javafx.scene.layout.Background.
\t at com.sun.javafx.fxml.BeanAdapter.coerce(BeanAdapter.java:495)
\t at com.sun.javafx.fxml.BeanAdapter.put(BeanAdapter.java:258)
\t at com.sun.javafx.fxml.BeanAdapter.put(BeanAdapter.java:54)
\t at javafx.fxml.FXMLLoader$Element.applyProperty(FXMLLoader.java:508)
\t at javafx.fxml.FXMLLoader$Element.processValue(FXMLLoader.java:359)
\t at javafx.fxml.FXMLLoader$Element.processPropertyAttribute(FXMLLoader.java:321)
\t at javafx.fxml.FXMLLoader$Element.processInstancePropertyAttributes(FXMLLoader.java:231)
\t at javafx.fxml.FXMLLoader$ValueElement.processEndElement(FXMLLoader.java:763)
\t at javafx.fxml.FXMLLoader.processEndElement(FXMLLoader.java:2827)
\t at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2536)
\t ... 18 more这究竟是为什么？请让我知道，如果我犯了任何错误，或者我错过了任何东西。