FXMLLoader javafx 中的异常

如何解决FXMLLoader javafx 中的异常

我在使用 javafx 时遇到了一个大问题。

我已经搜索了这个错误的解决方案，但没有找到任何东西。

我的代码：（它扩展了应用程序。）

public void start(Stage primaryStage) throws Exception {
    Parent root = FXMLLoader.load(Main.class.getResource("menu.fxml"));
    primaryStage.setTitle("hypotensive.cc");
    primaryStage.initStyle(StageStyle.UNDECORATED);
    primaryStage.setScene(new Scene(root,300,275));
    primaryStage.show();
}


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

另外，崩溃日志：

Exception in Application start method 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 com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)     
    at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)     
    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.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:873) 
 Caused by: java.lang.RuntimeException: Exception in Application start method   
    at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917) 
 Caused by: java.lang.RuntimeException: Exception in Application start method
    at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$1(LauncherImpl.java:182)    
    at java.lang.Thread.run(Thread.java:748) 
Caused by: java.lang.NullPointerException: Location is required. 
    at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3207)    
    t javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3175) 
Caused by: java.lang.NullPointerException: Location is required.
    at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3148)    
    at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3124)
    at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3104)    
    at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3097)    
    at cc.hypotensive.loader.Main.start(Main.java:20)   
    at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$8(LauncherImpl.java:863)   
    at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$7(PlatformImpl.java:326)   
    at com.sun.javafx.application.PlatformImpl.lambda$null$5(PlatformImpl.java:295)     
    at java.security.AccessController.doPrivileged(Native Method)   
    at com.sun.javafx.application.PlatformImpl.lambda$runLater$6(PlatformImpl.java:294)     
    at com.sun.glass.ui.invokelaterdispatcher$Future.run(invokelaterdispatcher.java:95)     
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)  
    at com.sun.glass.ui.win.WinApplication.lambda$null$4(WinApplication.java:185)   
... 1 more Exception running application cc.hypotensive.loader.Main