java - 无法打开 JFoenix 窗口

Question

每当我尝试打开 JFoenix 程序时，控制台中都会出现相同的错误消息...当我使用标准 JavaFx 组件时，一切都运行良好

关于Java的信息，我使用:我已经将JFoenix库导入到eclipse中；我用的是jdk1.8.0_111；我有最新的 JFoenix jar

这是错误:

    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:745)
Caused by: java.lang.UnsupportedClassVersionError: com/jfoenix/controls/JFXButton has been compiled by a more recent version of the Java Runtime (class file version 53.0), this version of the Java Runtime only recognizes class file versions up to 52.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at javafx.fxml.FXMLLoader.loadTypeForPackage(FXMLLoader.java:2916)
	at javafx.fxml.FXMLLoader.loadType(FXMLLoader.java:2905)
	at javafx.fxml.FXMLLoader.importClass(FXMLLoader.java:2846)
	at javafx.fxml.FXMLLoader.processImport(FXMLLoader.java:2692)
	at javafx.fxml.FXMLLoader.processProcessingInstruction(FXMLLoader.java:2661)
	at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2517)
	at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
	at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2409)
	at application.Main.start(Main.java:26)
	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 application.Main

我的主课:

package application;
	
import java.io.IOException;

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.AnchorPane;


public class Main extends Application {
	
	private AnchorPane root;
	private Stage primaryStage;
	
	@Override
	public void start(Stage primaryStage) {
		try {
		
			this.primaryStage = primaryStage;
			this.primaryStage.setTitle("SimpleMySQLConnector - Login");
			
			FXMLLoader load;
			load = new FXMLLoader(getClass().getResource("/application/LoginScreen.fxml"));
			root = load.load();
			Scene scene = new Scene(root);
			primaryStage.setScene(scene);
			primaryStage.show();
			
		} catch(Exception e) {
			e.printStackTrace();
			
		}
	}
	
	public static void main(String[] args) {
		launch(args);
		
	}
}

package application;
	
import java.io.IOException;

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.AnchorPane;


public class Main extends Application {
	
	private AnchorPane root;
	private Stage primaryStage;
	
	@Override
	public void start(Stage primaryStage) {
		try {
		
			this.primaryStage = primaryStage;
			this.primaryStage.setTitle("SimpleMySQLConnector - Login");
			
			FXMLLoader load;
			load = new FXMLLoader(getClass().getResource("/application/LoginScreen.fxml"));
			root = load.load();
			Scene scene = new Scene(root);
			primaryStage.setScene(scene);
			primaryStage.show();
			
		} catch(Exception e) {
			e.printStackTrace();
			
		}
	}
	
	public static void main(String[] args) {
		launch(args);
		
	}
}

这是 fxml 文件:

<?xml version="1.0" encoding="UTF-8"?>

<?import com.jfoenix.controls.JFXButton?>
<?import com.jfoenix.controls.JFXCheckBox?>
<?import com.jfoenix.controls.JFXPasswordField?>
<?import com.jfoenix.controls.JFXTextField?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.paint.LinearGradient?>
<?import javafx.scene.paint.Stop?>
<?import javafx.scene.text.Font?>

<AnchorPane prefHeight="700.0" prefWidth="1118.0" style="-fx-background-color: #000000;" xmlns="http://javafx.com/javafx/9.0.1" xmlns:fx="http://javafx.com/fxml/1">
   <children>
      <AnchorPane layoutX="587.0" layoutY="55.0" prefHeight="590.0" prefWidth="500.0" style="-fx-background-color: #0a52c9;">
         <children>
            <JFXTextField focusColor="#fafafa" layoutX="109.0" layoutY="156.0" prefHeight="42.0" prefWidth="282.0" promptText="Benutzername" unFocusColor="#3fd6f4">
               <font>
                  <Font name="Arial" size="18.0" />
               </font>
            </JFXTextField>
            <JFXPasswordField focusColor="WHITE" layoutX="112.0" layoutY="279.0" prefHeight="42.0" prefWidth="282.0" promptText="Passwort" unFocusColor="#3fd6f4">
               <font>
                  <Font size="18.0" />
               </font>
            </JFXPasswordField>
            <JFXButton layoutX="204.0" layoutY="375.0" prefHeight="42.0" prefWidth="91.0" style="-fx-background-color: #3fd6f4;" text="Login" textFill="WHITE">
               <font>
                  <Font name="Arial" size="18.0" />
               </font>
            </JFXButton>
            <JFXCheckBox layoutX="159.0" layoutY="479.0" text="Angemeldet bleiben" textFill="WHITE">
               <font>
                  <Font name="Arial" size="18.0" />
               </font>
            </JFXCheckBox>
            <Label layoutX="188.0" layoutY="58.0" text="Login">
               <font>
                  <Font name="Arial" size="50.0" />
               </font>
               <textFill>
                  <LinearGradient endX="1.0" endY="1.0">
                     <stops>
                        <Stop color="#3fd6f4" />
                        <Stop color="WHITE" offset="1.0" />
                     </stops>
                  </LinearGradient>
               </textFill>
            </Label>
         </children>
      </AnchorPane>
      <Label layoutX="28.0" layoutY="44.0" prefHeight="198.0" prefWidth="582.0" text="Willkommen bei" textAlignment="CENTER">
         <font>
            <Font name="Arial" size="30.0" />
         </font>
         <textFill>
            <LinearGradient endX="1.0" endY="1.0">
               <stops>
                  <Stop color="#00eade" />
                  <Stop color="WHITE" offset="1.0" />
               </stops>
            </LinearGradient>
         </textFill>
      </Label>
      <Label layoutX="28.0" layoutY="183.0" text="SimpleMySQLConnector">
         <textFill>
            <LinearGradient endX="1.0" endY="1.0">
               <stops>
                  <Stop color="#02dbea" />
                  <Stop color="WHITE" offset="1.0" />
               </stops>
            </LinearGradient>
         </textFill>
         <font>
            <Font size="40.0" />
         </font>
      </Label>
   </children>
</AnchorPane>

我希望您能够帮助我了解这些信息

Answer 1

如果你不想升级jdk；

1.更改Jfoenix版本到 8.0.9 ，如果您使用 Java9&10 使用 v9.0.9。

2.将 AnchorPane xmlns="http://javafx.com/javafx/9.0.1"更改为

xmlns="http://javafx.com/javafx/8.0.999-ea"

或

xmlns="http://javafx.com/javafx"

3.更改JavaFx Scene Builder版本根据您正在使用的版本。