Fxml中的第二個窗口

Question

又是我。 現在我的程序有另一個問題。 我嘗試通過按鈕購買打開新窗口（階段），它不起作用。 我不知道該怎么辦:(我知道這是一個簡單的問題，但我看不到，我需要您的幫助。

控制面板

package source;

import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.Node;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.PasswordField;
import javafx.scene.control.TextField;
import javafx.stage.Stage;
import java.io.IOException;
import java.util.Scanner;

public class ControlPanel {
    @FXML
    Button button;
    @FXML
    PasswordField passField;
    @FXML
    TextField loginPanel;
    @FXML
    Button btnOpenNewWindow;
    public void show(){
        System.out.println("Work");
    }
    @FXML
    public void log (){
        Scanner scanner = new Scanner(System.in);
        String login =loginPanel.getText();
        String login1 = "ala";
        String pass = passField.getText();
//        String pass1 = "1234";
        if(login.equals(login1)&& pass.equals("123")){
            System.out.println("zalogowales sie");
        }else{
            System.out.println("Nie zalogowales sie ");
        }
    }

        public void handle(ActionEvent event) {
            try {
                FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("source/menuPane.fxml"));
                Parent root1 = (Parent) fxmlLoader.load();
                Stage stage = new Stage();
                stage.setTitle("My New Stage Title");
                stage.setScene(new Scene(root1, 450, 450));
                stage.show();
            }
            catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

第一個fxml：

<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.layout.StackPane?>
<?import javafx.scene.layout.FlowPane?>
<?import javafx.scene.control.PasswordField?>
<FlowPane prefHeight="334.0" prefWidth="445.0" xmlns:fx="http://javafx.com/fxml/1"  fx:controller="source.ControlPanel" >
    <children >

        <TextField fx:id="loginPanel" alignment="BOTTOM_LEFT" text="source.Login" />
        <PasswordField fx:id="passField" alignment="BOTTOM_LEFT"  />

        <Button fx:id="button" text="Logowanie"  onAction="#handle"/>
    </children>

</FlowPane>

第二個Fxml：

    <?xml version="1.0" encoding="UTF-8"?>
    <?import javafx.scene.control.Button?>
    <?import javafx.scene.control.TextField?>
    <?import javafx.scene.layout.StackPane?>
    <?import javafx.scene.layout.FlowPane?>
    <?import javafx.scene.control.PasswordField?>
    <?import javafx.scene.control.Label?>
    <FlowPane prefHeight="334.0" prefWidth="445.0" xmlns:fx="http://javafx.com/fxml/1" fx:controller="source.ControlPanel" >
        <children >

            <Label text="Second Window"/>
        </children>

    </FlowPane>

你能告訴我，我可以在一個按鈕中添加2個onAction嗎？ 如果可以的話，請告訴我如何。 我忘了..

"C:\Program Files\Java\jdk1.8.0_161\bin\java" "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2017.3.4\lib\idea_rt.jar=60332:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2017.3.4\bin" -Dfile.encoding=UTF-8 -classpath "C:\Program Files\Java\jdk1.8.0_161\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\rt.jar;C:\Users\kubci\IdeaProjects\FinallyProject\out\production\FinallyProject;C:\Users\kubci\IdeaProjects\FinallyProject\mysql-connector-java-5.1.6.jar" source.LoginPanel
Exception in thread "JavaFX Application Thread" java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
    at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1774)
    at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1657)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
    at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
    at javafx.event.Event.fireEvent(Event.java:198)
    at javafx.scene.Node.fireEvent(Node.java:8413)
    at javafx.scene.control.Button.fire(Button.java:185)
    at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)
    at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96)
    at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)
    at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
    at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
    at javafx.event.Event.fireEvent(Event.java:198)
    at javafx.scene.Scene$MouseHandler.process(Scene.java:3757)
    at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485)
    at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
    at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:394)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$353(GlassViewEventHandler.java:432)
    at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:431)
    at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
    at com.sun.glass.ui.View.notifyMouse(View.java:937)
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
    at com.sun.glass.ui.win.WinApplication.lambda$null$147(WinApplication.java:177)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
    at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1769)
    ... 48 more
Caused by: java.lang.IllegalStateException: Location is not set.
    at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2434)
    at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2409)
    at source.ControlPanel.handle(ControlPanel.java:51)
    ... 58 more

Answer 1

該錯誤在以下一行中Caused by: java.lang.IllegalStateException: Location is not set. ，與

 FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("source/menuPane.fxml"));
 Parent root1 = (Parent) fxmlLoader.load();

資源source/menuPane.fxml最有可能不在相對於類的路徑中。 如果您要執行System.out.println(getClass().getResource("source/menuPane.fxml"))我的猜測是您會得到null 。 考慮到您的路徑以source開頭，我被認為您對運行時具有訪問源代碼的印象。

確保FXML資源在運行時類路徑中可用，並確保指定的路徑根據運行時類路徑是正確的。

Answer 2

當我改變這個：

FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("/source/menuPane.fxml"));

在此：

FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("/source/stackPanel.fxml"));

我得到相同的窗口，因此它可以在堆棧面板上工作..但我不知道為什么當我編寫menuPane程序時不起作用。 我有一個好的路徑/source/menuPane.fxml，它在同一包中。

Answer 3

我現在明白了。

maj 16, 2018 10:37:44 PM source.ControlPanel open1
SEVERE: null
javafx.fxml.LoadException: 
/C:/Users/kubci/IdeaProjects/FinallyProject/out/production/FinallyProject/source/menuPane.fxml