Application构造函数中的JavaFX异常java.lang.reflect.InvocationTargetException

时间：2015-12-04 23:56:02

标签： java javafx

我正在尝试在EditPage类中有一个MainPage实例，同时在MainPage类中有一个EditPage实例。 但是，我得到例外。为什么会发生此异常？以及如何解决这个问题？

这是我的应用程序类，它有一个main方法：

package application;

import javafx.application.Application;
import javafx.stage.Stage;
import pages.MainPage;


public class Main extends Application {
    @Override
    public void start(Stage stage) {
        try {

            data.fileSetUp();
            data.loadMeta();

            mainScene.setAlwaysOnTop(stage);
            mainScene.updateAlwaysOnTop(stage);
            mainScene.setEditAction(stage);

            stage.setScene(mainScene.getScene());
            stage.show();
            stage.setOnCloseRequest(e->{
                try {
                    data.saveMeta();
                } catch (Exception e1) {
                    e1.printStackTrace();
                }
            });

        } catch(Exception e) {
            e.printStackTrace();
        }
    }

    DataControl data = new DataControl();

    MainPage mainScene = new MainPage();

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

这是一个MainPage类：

package pages;

import java.util.ArrayList;

import application.DataControl;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.StackPane;
import javafx.scene.text.Text;
import javafx.stage.Stage;

public class MainPage {

    public Scene getScene(){

        arrayReady.add(txtReady1);arrayReady.add(txtReady2);arrayReady.add(txtReady3);arrayReady.add(txtReady4);arrayReady.add(txtReady5);
        for (Text txt:arrayReady){
            txt.setStyle("-fx-font-size: 20");
        }

        arrayEdit.add(lEdit1);arrayEdit.add(lEdit2);arrayEdit.add(lEdit3);arrayEdit.add(lEdit4);arrayEdit.add(lEdit5);
        for (Label label:arrayEdit){
            label.setStyle("-fx-font-size: 20");
        }

        arrayMenu.add(lAlwaysOnTop);arrayMenu.add(lControl);
        for (Label label:arrayMenu){
            label.setStyle("-fx-font-size: 15");
        }

        gridReadyEdit.addColumn(0, txtReady1,txtReady2,txtReady3,txtReady4,txtReady5);
        gridReadyEdit.addColumn(1, lEdit1,lEdit2,lEdit3,lEdit4,lEdit5);
        gridReadyEdit.setAlignment(Pos.CENTER);
        gridReadyEdit.setHgap(20);
        gridReadyEdit.setMaxSize(300, 0);

        gridMenu.addRow(0, lAlwaysOnTop,lControl);
        gridMenu.setAlignment(Pos.CENTER);
        gridMenu.setHgap(20);
        gridMenu.setMaxSize(300, 0);
        gridMenu.setStyle("-fx-border-color:lightgrey");

        pane.getChildren().addAll(gridReadyEdit,gridMenu,lVersion);
        StackPane.setAlignment(gridMenu, Pos.TOP_CENTER);
        StackPane.setAlignment(lVersion, Pos.BOTTOM_CENTER);

        return scene;
    }

    public void setEditAction(Stage stage){
        arrayEdit.clear();
        arrayEdit.add(lEdit1);arrayEdit.add(lEdit2);arrayEdit.add(lEdit3);arrayEdit.add(lEdit4);arrayEdit.add(lEdit5);
        for (Label label:arrayEdit){
            label.setOnMousePressed(e->{
                stage.setScene(editPage.getScene());
            });
        }
    }

    public void setAlwaysOnTop(Stage stage){
        lAlwaysOnTop.setOnMousePressed(e->{
            if (DataControl.checkAlwaysOnTop == 1){
                DataControl.checkAlwaysOnTop = 0;
                updateAlwaysOnTop(stage);
            } else {
                DataControl.checkAlwaysOnTop = 1;
                updateAlwaysOnTop(stage);
            }
        });
    }

    public void updateAlwaysOnTop(Stage stage){
        if (DataControl.checkAlwaysOnTop == 1){
            lAlwaysOnTop.setText("Always On Top: Yes");
            stage.setAlwaysOnTop(true);
        } else {
            lAlwaysOnTop.setText("Always On Top: No");
            stage.setAlwaysOnTop(false);
        }
    }

    public GridPane getGridMenu(){return gridMenu;}

    private ArrayList<Text> arrayReady = new ArrayList<Text>();
    private ArrayList<Label> arrayEdit = new ArrayList<Label>();
    private ArrayList<Label> arrayMenu = new ArrayList<Label>();

    private Label lVersion = new Label("Version 1.0");
    private Label lEdit1 = new Label("EDIT");
    private Label lEdit2 = new Label("EDIT");
    private Label lEdit3 = new Label("EDIT");
    private Label lEdit4 = new Label("EDIT");
    private Label lEdit5 = new Label("EDIT");
    private Label lAlwaysOnTop = new Label();
    private Label lControl = new Label("Control Setting");

    private Text txtReady1 = new Text("1. Ready");
    private Text txtReady2 = new Text("2. Ready");
    private Text txtReady3 = new Text("3. Ready");
    private Text txtReady4 = new Text("4. Ready");
    private Text txtReady5 = new Text("5. Ready");

    private GridPane gridMenu = new GridPane();

    private GridPane gridReadyEdit = new GridPane();

    private StackPane pane = new StackPane();

    private Scene scene = new Scene(pane,300,300);

    private EditPage editPage = new EditPage();
}

这是一个EditPage类：

package pages;

import javafx.scene.Scene;
import javafx.scene.layout.StackPane;

public class EditPage{

    public Scene getScene(){

        pane.getChildren().addAll();

        return scene;
    }

    private StackPane pane = new StackPane();

    private Scene scene = new Scene(pane,300,300);

    private MainPage mainPage = new MainPage();
}

最后，这是一条错误消息：

Exception in Application constructor
java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(Unknown Source)
    at com.sun.javafx.application.LauncherImpl.launchApplication(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at sun.launcher.LauncherHelper$FXHelper.main(Unknown Source)
Caused by: java.lang.RuntimeException: Unable to construct Application instance: class application.Main
    at com.sun.javafx.application.LauncherImpl.launchApplication1(Unknown Source)
    at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$152(Unknown Source)
    at com.sun.javafx.application.LauncherImpl$$Lambda$50/1645995473.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$158(Unknown Source)
    at com.sun.javafx.application.LauncherImpl$$Lambda$51/2125582483.run(Unknown Source)
    at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$172(Unknown Source)
    at com.sun.javafx.application.PlatformImpl$$Lambda$45/186276003.run(Unknown Source)
    at com.sun.javafx.application.PlatformImpl.lambda$null$170(Unknown Source)
    at com.sun.javafx.application.PlatformImpl$$Lambda$48/1698672883.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.sun.javafx.application.PlatformImpl.lambda$runLater$171(Unknown Source)
    at com.sun.javafx.application.PlatformImpl$$Lambda$47/237061348.run(Unknown Source)
    at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(Unknown Source)
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
    at com.sun.glass.ui.win.WinApplication.lambda$null$145(Unknown Source)
    at com.sun.glass.ui.win.WinApplication$$Lambda$36/2117255219.run(Unknown Source)
    ... 1 more
Caused by: java.lang.StackOverflowError
    at java.util.TimSort.countRunAndMakeAscending(Unknown Source)
    at java.util.TimSort.sort(Unknown Source)
    at java.util.Arrays.sort(Unknown Source)
    at java.util.ArrayList.sort(Unknown Source)
    at java.util.Collections.sort(Unknown Source)
    at com.sun.javafx.css.SelectorPartitioning.match(Unknown Source)
    at com.sun.javafx.css.StyleManager.findMatchingStyles(Unknown Source)
    at javafx.scene.CssStyleHelper.createStyleHelper(Unknown Source)
    at javafx.scene.Node.reapplyCss(Unknown Source)
    at javafx.scene.Node.impl_reapplyCSS(Unknown Source)
    at javafx.scene.Node.invalidatedScenes(Unknown Source)
    at javafx.scene.Node.setScenes(Unknown Source)
    at javafx.scene.Scene$9.invalidated(Unknown Source)
    at javafx.beans.property.ObjectPropertyBase.markInvalid(Unknown Source)
    at javafx.beans.property.ObjectPropertyBase.set(Unknown Source)
    at javafx.scene.Scene.setRoot(Unknown Source)
    at javafx.scene.Scene.<init>(Unknown Source)
    at javafx.scene.Scene.<init>(Unknown Source)
    at pages.MainPage.<init>(MainPage.java:115)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
    at pages.MainPage.<init>(MainPage.java:117)
    at pages.EditPage.<init>(EditPage.java:23)
Exception running application application.Main

1 个答案:

答案 0 :(得分：0)

  

为什么会发生此异常？

java.lang.reflect.InvocationTargetException发生了，因为在JavaFX应用程序启动时出现了错误（抛出了异常）。

您可以通过检查堆栈跟踪找出问题所在。特别是，查看嵌套异常。在这种情况下，最终的“原因”例外是StackOverflowError。

那导致StackOverflowError的原因是什么？从堆栈帧判断，有一个“无限递归”，其中：

  • MainPage创建EditPage
  • EditPage创建MainPage
  • MainPage创建EditPage
  • EditPage创建MainPage
  • 依旧 ad infinitum 。

这方面的证据是堆栈帧的重复模式：

at pages.EditPage.<init>(EditPage.java:23)
at pages.MainPage.<init>(MainPage.java:117)
at pages.EditPage.<init>(EditPage.java:23)
at pages.MainPage.<init>(MainPage.java:117)

粗略检查一下代码会告诉你它在哪里发生。 （提示：<init>表示它在对象构造期间发生，堆栈跟踪甚至会告诉您源代码行号！）

  

以及如何解决这个问题？

修复代码中导致无限递归的错误。

几乎可以肯定...... EditPage不应该创建MainPage。您可能需要将MainPage的引用作为EditPage构造函数的参数传递。

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