如何在javaFX中使用多個fxml？

Question

當前，我的主要javaFX主類如下所示：

public class Main extends Application {

private Stage primaryStage;
private AnchorPane rootLayout;
private Shell shl = new Shell();;
@FXML
private PasswordField pass;
@FXML
private TextField user;
@FXML
private String description;
@FXML
private String title;


@Override
public void start(Stage primaryStage) {
    this.primaryStage = primaryStage;
    this.primaryStage.setTitle("WorkFlow Manager");
    initRootLayout();
}

/**
 * root layout (base layout).
 */
public void initRootLayout() {
    try {

        FXMLLoader loader = new FXMLLoader();
        loader.setLocation(Main.class.getResource("LoginMenu.fxml"));
        rootLayout = (AnchorPane) loader.load();
        Scene scene = new Scene(rootLayout);
        primaryStage.setScene(scene);                                    
        primaryStage.show();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

public void toDoLayout() {
    try{
        FXMLLoader loader = new FXMLLoader();
        loader.setLocation(Main.class.getResource("Todo.fxml"));
        AnchorPane toDo = (AnchorPane) loader.load();
        Scene scene = new Scene(rootLayout);

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

/**
 *
 * @return primaryStage
 */
public Stage getPrimaryStage() {
    return primaryStage;
}

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

@FXML
private void login(ActionEvent event) {
    if(user.getText()!=null && pass.getText()!=null){
        shl.login(user.getText(),pass.getText());
        System.out.printf("%s",shl.getCurrentUser());
        //toDoLayout(); I commented this out since it isn't working
    }
}
}

我的第一個函數initRootLayout（）運行正常，可以按預期方式加載fxml並執行預期的功能。

但是，我正在嘗試啟動一個新場景（替換login fxml場景）。 我嘗試調用toDoLayout（）函數（已被注釋掉），因為每次單擊按鈕時，它將引發這些異常：

 java.lang.ClassNotFoundException: main.iface.MainTerminal{
/C:/Users/a51217/workspace/wfmgr/bin/main/iface/Todo.fxml:9
  at javafx.fxml.FXMLLoader$ValueElement.processAttribute(Unknown Source)
  at javafx.fxml.FXMLLoader$InstanceDeclarationElement.processAttribute(Unknown Source)
  at javafx.fxml.FXMLLoader$Element.processStartElement(Unknown Source)
  at javafx.fxml.FXMLLoader$ValueElement.processStartElement(Unknown Source)
  at javafx.fxml.FXMLLoader.processStartElement(Unknown Source)
  at javafx.fxml.FXMLLoader.load(Unknown Source)
  at javafx.fxml.FXMLLoader.load(Unknown Source)
  at main.iface.Main.toDoLayout(Main.java:59)
  at main.iface.Main.login(Main.java:84)
  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.reflect.misc.Trampoline.invoke(Unknown Source)
  at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
  at java.lang.reflect.Method.invoke(Unknown Source)
  at sun.reflect.misc.MethodUtil.invoke(Unknown Source)
  at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(Unknown Source)
  at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
  at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
  at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
  at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source)
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
  at com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
  at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
  at javafx.event.Event.fireEvent(Unknown Source)
  at javafx.scene.Node.fireEvent(Unknown Source)
  at javafx.scene.control.Button.fire(Unknown Source)
  at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(Unknown Source)
  at com.sun.javafx.scene.control.skin.SkinBase$4.handle(Unknown Source)
  at com.sun.javafx.scene.control.skin.SkinBase$4.handle(Unknown Source)
  at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
  at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
  at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
  at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source)
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
  at com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
  at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
  at javafx.event.Event.fireEvent(Unknown Source)
  at javafx.scene.Scene$MouseHandler.process(Unknown Source)
  at javafx.scene.Scene$MouseHandler.process(Unknown Source)
  at javafx.scene.Scene$MouseHandler.access$1900(Unknown Source)
  at javafx.scene.Scene.impl_processMouseEvent(Unknown Source)
  at javafx.scene.Scene$ScenePeerListener.mouseEvent(Unknown Source)
  at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(Unknown Source)
  at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(Unknown Source)
  at java.security.AccessController.doPrivileged(Native Method)
  at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(Unknown Source)
  at com.sun.glass.ui.View.handleMouseEvent(Unknown Source)
  at com.sun.glass.ui.View.notifyMouse(Unknown Source)
  at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
  at com.sun.glass.ui.win.WinApplication.access$100(Unknown Source)
  at com.sun.glass.ui.win.WinApplication$3$1.run(Unknown Source)
  at java.lang.Thread.run(Unknown Source)

javafx.fxml.LoadException: java.lang.ClassNotFoundException: main.iface.MainTerminal{
    at javafx.fxml.FXMLLoader$ValueElement.processAttribute(Unknown Source)
    at javafx.fxml.FXMLLoader$InstanceDeclarationElement.processAttribute(Unknown Source)
    at javafx.fxml.FXMLLoader$Element.processStartElement(Unknown Source)
    at javafx.fxml.FXMLLoader$ValueElement.processStartElement(Unknown Source)
    at javafx.fxml.FXMLLoader.processStartElement(Unknown Source)
    at javafx.fxml.FXMLLoader.load(Unknown Source)
    at javafx.fxml.FXMLLoader.load(Unknown Source)
    at main.iface.Main.toDoLayout(Main.java:59)
    at main.iface.Main.login(Main.java:84)
    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.reflect.misc.Trampoline.invoke(Unknown Source)
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at sun.reflect.misc.MethodUtil.invoke(Unknown Source)
    at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(Unknown Source)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
    at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
    at javafx.event.Event.fireEvent(Unknown Source)
    at javafx.scene.Node.fireEvent(Unknown Source)
    at javafx.scene.control.Button.fire(Unknown Source)
    at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(Unknown Source)
    at com.sun.javafx.scene.control.skin.SkinBase$4.handle(Unknown Source)
    at com.sun.javafx.scene.control.skin.SkinBase$4.handle(Unknown Source)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
    at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
    at javafx.event.Event.fireEvent(Unknown Source)
    at javafx.scene.Scene$MouseHandler.process(Unknown Source)
    at javafx.scene.Scene$MouseHandler.process(Unknown Source)
    at javafx.scene.Scene$MouseHandler.access$1900(Unknown Source)
    at javafx.scene.Scene.impl_processMouseEvent(Unknown Source)
    at javafx.scene.Scene$ScenePeerListener.mouseEvent(Unknown Source)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(Unknown Source)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(Unknown Source)
    at com.sun.glass.ui.View.handleMouseEvent(Unknown Source)
    at com.sun.glass.ui.View.notifyMouse(Unknown Source)
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
    at com.sun.glass.ui.win.WinApplication.access$100(Unknown Source)
    at com.sun.glass.ui.win.WinApplication$3$1.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: main.iface.MainTerminal{
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 63 more

編輯：我的Todo.fxml：

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

<?import javafx.scene.control.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.layout.AnchorPane?>


<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8.0.40" xmlns:fx="http://javafx.com/fxml/1" fx:controller="main.iface.MainTerminal{">
   <children>
      <ListView layoutX="37.0" layoutY="47.0" prefHeight="333.0" prefWidth="195.0" />
      <ScrollBar layoutX="37.0" layoutY="47.0" orientation="VERTICAL" prefHeight="333.0" prefWidth="14.0" />
      <TextField fx:id="getTitle" layoutX="262.0" layoutY="47.0" prefHeight="25.0" prefWidth="321.0" />
      <TextArea fx:id="getDescription" layoutX="262.0" layoutY="92.0" prefHeight="247.0" prefWidth="321.0" />
      <Button layoutX="262.0" layoutY="355.0" mnemonicParsing="false" text="Create Task" />
      <Button layoutX="351.0" layoutY="355.0" mnemonicParsing="false" text="Assign User to this Task" />
      <ScrollBar layoutX="262.0" layoutY="92.0" orientation="VERTICAL" prefHeight="247.0" prefWidth="14.0" />
   </children>
</AnchorPane>

MainTerminal不是我的控制器，我忘了糾正它。 我的Main充當控制器，因此我將第9行更改為：

<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8.0.40" xmlns:fx="http://javafx.com/fxml/1" fx:controller="main.iface.Main{">

進行此更改后，例外情況似乎是相同的：

java.lang.ClassNotFoundException: main.iface.Main{
/C:/Users/a51217/workspace/wfmgr/bin/main/iface/Todo.fxml:9
  at javafx.fxml.FXMLLoader$ValueElement.processAttribute(Unknown Source)
  at javafx.fxml.FXMLLoader$InstanceDeclarationElement.processAttribute(Unknown Source)
  at javafx.fxml.FXMLLoader$Element.processStartElement(Unknown Source)
  at javafx.fxml.FXMLLoader$ValueElement.processStartElement(Unknown Source)
  at javafx.fxml.FXMLLoader.processStartElement(Unknown Source)
  at javafx.fxml.FXMLLoader.load(Unknown Source)
  at javafx.fxml.FXMLLoader.load(Unknown Source)
  at main.iface.Main.toDoLayout(Main.java:59)
  at main.iface.Main.login(Main.java:84)
  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.reflect.misc.Trampoline.invoke(Unknown Source)
  at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
  at java.lang.reflect.Method.invoke(Unknown Source)
  at sun.reflect.misc.MethodUtil.invoke(Unknown Source)
  at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(Unknown Source)
  at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
  at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
  at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
  at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source)
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
  at com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
  at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
  at javafx.event.Event.fireEvent(Unknown Source)
  at javafx.scene.Node.fireEvent(Unknown Source)
  at javafx.scene.control.Button.fire(Unknown Source)
  at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(Unknown Source)
  at com.sun.javafx.scene.control.skin.SkinBase$4.handle(Unknown Source)
  at com.sun.javafx.scene.control.skin.SkinBase$4.handle(Unknown Source)
  at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
  at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
  at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
  at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source)
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
  at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
  at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
  at com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
  at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
  at javafx.event.Event.fireEvent(Unknown Source)
  at javafx.scene.Scene$MouseHandler.process(Unknown Source)
  at javafx.scene.Scene$MouseHandler.process(Unknown Source)
  at javafx.scene.Scene$MouseHandler.access$1900(Unknown Source)
  at javafx.scene.Scene.impl_processMouseEvent(Unknown Source)
  at javafx.scene.Scene$ScenePeerListener.mouseEvent(Unknown Source)
  at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(Unknown Source)
  at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(Unknown Source)
  at java.security.AccessController.doPrivileged(Native Method)
  at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(Unknown Source)
  at com.sun.glass.ui.View.handleMouseEvent(Unknown Source)
  at com.sun.glass.ui.View.notifyMouse(Unknown Source)
  at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
  at com.sun.glass.ui.win.WinApplication.access$100(Unknown Source)
  at com.sun.glass.ui.win.WinApplication$3$1.run(Unknown Source)
  at java.lang.Thread.run(Unknown Source)

javafx.fxml.LoadException: java.lang.ClassNotFoundException: main.iface.Main{
    at javafx.fxml.FXMLLoader$ValueElement.processAttribute(Unknown Source)
    at javafx.fxml.FXMLLoader$InstanceDeclarationElement.processAttribute(Unknown Source)
    at javafx.fxml.FXMLLoader$Element.processStartElement(Unknown Source)
    at javafx.fxml.FXMLLoader$ValueElement.processStartElement(Unknown Source)
    at javafx.fxml.FXMLLoader.processStartElement(Unknown Source)
    at javafx.fxml.FXMLLoader.load(Unknown Source)
    at javafx.fxml.FXMLLoader.load(Unknown Source)
    at main.iface.Main.toDoLayout(Main.java:59)
    at main.iface.Main.login(Main.java:84)
    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.reflect.misc.Trampoline.invoke(Unknown Source)
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at sun.reflect.misc.MethodUtil.invoke(Unknown Source)
    at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(Unknown Source)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
    at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
    at javafx.event.Event.fireEvent(Unknown Source)
    at javafx.scene.Node.fireEvent(Unknown Source)
    at javafx.scene.control.Button.fire(Unknown Source)
    at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(Unknown Source)
    at com.sun.javafx.scene.control.skin.SkinBase$4.handle(Unknown Source)
    at com.sun.javafx.scene.control.skin.SkinBase$4.handle(Unknown Source)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
    at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
    at javafx.event.Event.fireEvent(Unknown Source)
    at javafx.scene.Scene$MouseHandler.process(Unknown Source)
    at javafx.scene.Scene$MouseHandler.process(Unknown Source)
    at javafx.scene.Scene$MouseHandler.access$1900(Unknown Source)
    at javafx.scene.Scene.impl_processMouseEvent(Unknown Source)
    at javafx.scene.Scene$ScenePeerListener.mouseEvent(Unknown Source)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(Unknown Source)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(Unknown Source)
    at com.sun.glass.ui.View.handleMouseEvent(Unknown Source)
    at com.sun.glass.ui.View.notifyMouse(Unknown Source)
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
    at com.sun.glass.ui.win.WinApplication.access$100(Unknown Source)
    at com.sun.glass.ui.win.WinApplication$3$1.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: main.iface.Main{
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 63 more

Answer 1

發生此異常是因為fx:controller屬性中有一個額外的{ 。 此屬性應設置為控制器類的標准名稱。 由於{不是類名中的合法字符，因此fx:controller = "main.iface.MainTerminal{"可能不正確。

假設您的控制器類為MainTerminal ，並且位於名為main.iface的包中，則正確的屬性設置為fx:controller = "main.iface.MainTerminal" 。

另外，您的toDoLayout()方法僅創建一個包含ToDo.fxml中定義的UI的Scene ，但對該場景不做任何事情：您需要在舞台上顯示它。 因此，一旦您修復了fx:controller屬性，它將在沒有錯誤的情況下運行，但是在您也修復該代碼之前不會做任何事情。

最后，似乎您正在使用Application子類作為（至少？）一個FXML文件的控制器，因為其中具有@FXML字段。 不要這樣做：這將非常令人困惑。 （發生的情況是，在啟動時為您創建了Main類的一個實例，然后由FXMLLoader創建了另一個實例 ，無論哪個FXML文件將其聲明為控制器。某些字段將在第一個實例中初始化primaryStage和rootLayout -和其他字段（ @FXML字段）將在第二個實例中初始化。要跟蹤已初始化的內容和仍為null字段將非常非常困難。）您應該創建Application子類來啟動應用程序啟動，然后每個FXML應該具有自己的單獨的控制器類。