首页 文章

Application start方法中的异常java.lang.reflect.InvocationTargetException JavaFX图像转换

提问于
浏览
0

当我尝试为我的JavaFX应用程序添加图像转换时,它抛出了这个错误,我在Stackoverflow中检查了之前的问题和答案,但所有解决方案仅针对每个问题 . 我使用的是netbeans IDE .

使用平台C执行H:\ thirdf \ FinalF \ dist \ run2135548605 \ FinalF.jar:\ Program Files \ Java \ jdk1.8.0_101 \ jre / bin / java应用程序启动方法中的异常java.lang.reflect.InvocationTargetException at sun at.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)com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)位于sun.reflect的com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328) . NativeMethodAccessorImpl.invoke0(本地方法)在sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)在sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)在java.lang.reflect.Method.invoke(方法 . java:498)at sun.launcher.LauncherHelper $ FXHelper.main(Launc herHelper.java:767)引起:java.lang.RuntimeException:com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)中com.sun.javafx.application.LauncherImpl的Application start方法中的异常 . lambda $ launchApplication $ 155(LauncherImpl.java:182)at java.lang.Thread.run(Thread.java:745)引起:javafx.fxml.LoadException:file:/ H:/ thirdf / FinalF / dist / run2135548605 / FinalF位于javafx.fxml.fxml.FXML中的javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)的javafx.Fxml.fxml.fxml.fxml.fxml.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2579)处于javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)的.jar!/finalf/FXMLDocument.fxml的java:2441)在javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3214)在javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3175)在javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3148)在javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3124)在javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3104)在javafx.fxml.FXMLLoader.load(FXMLLoader.java:3097)在finalf.FinalF.start (FinalF.java:38)at com.sun.javafx.application.LauncherImpl.lambda $ launchApplication1 $ 162(LauncherImpl.java:863)位于com.sun.javafx的com.sun.javafx.application.PlatformImpl.lambda $ runAndWait $ 175(PlatformImpl.java:326) . 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 at com.sun.glass.ui.InvokeLaterDispatcher $ Future.run(InvokeLaterDispatcher.java:95)com.sun.glass.ui.win.WinApplication._runLoop(Native Method)at com.sun.glass.ui.win.WinApplication .lambda $ null $ 148(WinApplication.java:191)... 1更多引起:java.lang.NullPointerException:位置是必需的 . 在javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3207)在javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3175)在javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3148)在javafx.fxml . FXMLLoader.loadImpl(FXMLLoader.java:3124)在javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3104)在javafx.fxml.FXMLLoader.load(FXMLLoader.java:3097)在finalf.FXMLDocumentController.loadSplashScreen(FXMLDocumentController.java :55)在finalf.FXMLDocumentController.initialize(FXMLDocumentController.java:69)at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2548)... 17 more异常运行应用程序finalf.FinalF Java结果:1

这是代码

SplashFXML.fxml

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

<?import javafx.scene.image.Image?>
<?import javafx.scene.image.ImageView?>
<?import javafx.scene.layout.StackPane?>


<StackPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="574.0" xmlns="http://javafx.com/javafx/8.0.101" xmlns:fx="http://javafx.com/fxml/1">
   <children>
      <ImageView fitHeight="450.0" fitWidth="560.0" pickOnBounds="true" preserveRatio="true">
         <image>
            <Image url="@loader.png" />
         </image>
      </ImageView>
   </children>
</StackPane>

FXMLDocument.fxml

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

<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.layout.AnchorPane?>

<AnchorPane id="AnchorPane" prefHeight="462.0" prefWidth="473.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/8.0.101" fx:controller="finalf.FXMLDocumentController">
    <children>
        <Button fx:id="button" layoutX="126.0" layoutY="225.0" onAction="#handleButtonAction" prefHeight="31.0" prefWidth="212.0" text="Play" />
        <Label fx:id="label" layoutX="126" layoutY="120" minHeight="16" minWidth="69" />
      <Button layoutX="126.0" layoutY="312.0" mnemonicParsing="false" prefHeight="31.0" prefWidth="212.0" text="Instructions" />
      <TextField layoutX="126.0" layoutY="141.0" prefHeight="31.0" prefWidth="212.0" />
    </children>
</AnchorPane>

FXMLDocumentController.java

package finalf;

import java.io.IOException;
import java.net.URL;
import java.util.ResourceBundle;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.animation.FadeTransition;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.fxml.Initializable;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
import javafx.util.Duration;

public class FXMLDocumentController implements Initializable {

    @FXML
    private Label label;

    @FXML
    private AnchorPane root;

    @FXML
    private void handleButtonAction(ActionEvent event) {
       try{
       FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("Second_Window.fxml"));
       Parent rootl = (Parent) fxmlLoader.load();
       Stage stage = new Stage();

       stage.setTitle("Foker");
       stage.setScene(new Scene(rootl));
       stage.show();
       }catch(Exception e){
        System.out.println("Can't load new window");
       }
    }


    private void loadSplashScreen() throws IOException{
      StackPane pane = FXMLLoader.load(getClass().getResource("/SplashFXML.fxml"));
      root.getChildren().setAll(pane);
      FadeTransition fadeIn = new FadeTransition(Duration.seconds(3),pane);
      fadeIn.setFromValue(0);
      fadeIn.setToValue(1);
      fadeIn.setCycleCount(1);

      fadeIn.play();

    }

    @Override
    public void initialize(URL url, ResourceBundle rb) {
        try {
            loadSplashScreen();
        } catch (IOException ex) {
            Logger.getLogger(FXMLDocumentController.class.getName()).log(Level.SEVERE, null, ex);
        }
    }    

}

FinalF.java

package finalf;

import javafx.application.Application;
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.Label;
import javafx.stage.Stage;


public class FinalF extends Application {

    @FXML
    private Button button;

    @FXML
    private Label label;

    @FXML
    void handleButtonAction(ActionEvent event){


    }

    @Override
    public void start(Stage stage) throws Exception {
        Parent root = FXMLLoader.load(getClass().getResource("FXMLDocument.fxml"));

        Scene scene = new Scene(root);

        stage.setScene(scene);
        stage.show();
    }


    public static void main(String[] args) {
        launch(args);
    }

}

1 回答

  • 1

    我们试试吧

    在FXMLDocumentController.java中

    • ,更改 loadSplashScreen() 方法中的第一行,

    StackPane pane = FXMLLoader.load(getClass().getResource("/SplashFXML.fxml"));
    

    StackPane pane = FXMLLoader.load(getClass().getResource("SplashFXML.fxml"));
    

    在FXMLDocument.fxml中

    • ,将 fx:id="root" 添加到 AnchorPane 部分 . 让它改变

    AnchorPane id="AnchorPane" prefHeight="462.0" prefWidth="473.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/8.0.101" fx:controller="finalf.FXMLDocumentController"
    

    AnchorPane id="AnchorPane" fx:id="root" prefHeight="462.0" prefWidth="473.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/8.0.101" fx:controller="finalf.FXMLDocumentController"
    

    希望它在这两个步骤之后解决您的问题 .

相关问题