java.lang.IllegalStateException：未设置位置-启动时

Question

我想运行我的应用程序，但是异常返回给我。我找到了一个类似的question，并且以相同的方式进行了操作，但是并没有帮助我。我认为该错误很愚蠢，但是我看不到它，并且我不知道该怎么办，请帮忙。

我的主要方法

public class App extends Application {
    private Stage menuBar;
    private BorderPane mainWindow;

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

    @Override
    public void start(Stage primaryStage) throws Exception {
        this.menuBar = primaryStage;

        initMenuWindow();
    }

    private void initMenuWindow() {
        try {
            FXMLLoader loader = new FXMLLoader();
            loader.setLocation(App.class.getResource("menuWindow.fxml"));
            mainWindow = loader.load();     //ERROR

            Scene scene = new Scene(mainWindow);
            menuBar.setScene(scene);

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

和例外

Exception in Application start method
java.lang.reflect.InvocationTargetException
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:567)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:464)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:363)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:567)
    at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1051)
Caused by: java.lang.RuntimeException: Exception in Application start method
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:900)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
    at java.base/java.lang.Thread.run(Thread.java:835)
Caused by: java.lang.IllegalStateException: Location is not set.
    at javafx.fxml/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2459)
    at javafx.fxml/javafx.fxml.FXMLLoader.load(FXMLLoader.java:2435)
    at java/zherikhov.App.initMenuWindow(App.java:48)
    at java/zherikhov.App.start(App.java:27)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:846)
    at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:455)
    at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:428)
    at java.base/java.security.AccessController.doPrivileged(AccessController.java:389)
    at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:427)
    at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
    at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
    at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
    ... 1 more
Exception running application zherikhov.App

我的Java模块

module java {
    opens zherikhov to javafx.fxml;
    exports zherikhov;
    requires javafx.fxml;
    requires javafx.graphics;
    requires javafx.controls;
}

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Answer 1

您的问题看起来很简单， 只需将FXML文件名menuWindow.fxml替换为以 src 文件开头的文件的完整路径，并以文件名结尾为.fxml

我希望这对您有用（在我的情况下有效，但是您项目的结构看起来有所不同）