我正在尝试让我的 FXML 文件从此项目结构中的子文件夹中加载为 UI 元素：
InventoryManagementUI
InventoryManagementUI.Java
Controller
MainMenuController.Java
View
MainMenu.fxml
Model
我在按位置获取实际资源时遇到问题，并尝试了以下方法：
Parent root = FXMLLoader.load(getClass().getResource("View/MainMenu.fxml"));
Parent root = FXMLLoader.load(getClass().getResource("/View/MainMenu.fxml"));
Parent root = FXMLLoader.load(getClass().getResource("inventorymanagementui/View/MainMenu.fxml"));
Parent root = FXMLLoader.load(getClass().getResource("/inventorymanagementui/View/MainMenu.fxml"));
这是我的错误日志，特别是当我使用...getResource("/View/MainMenu.fxml"(：
这些尝试是在我的 InventoryManagementUI.java 文件的启动方法中进行的。为什么我无法获得对FXML的引用
java.lang.IllegalStateException: Location is not set.
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2434)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2409)
at inventorymanagementui.InventoryManagementUI.start(InventoryManagementUI.java:69)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$162(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$175(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$173(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$174(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
at java.lang.Thread.run(Thread.java:748)
如果我尝试通过完整的类路径加载(这应该是正确的方式(，如下所示：
...getResource("/inventorymanagementui/View/MainMenu.fxml"));
我收到错误：
javafx.fxml.LoadException:file:...NetBeansProjects/InventoryManagementUI/dist/run2552658/InventoryManagementUI.jar!/inventorymanagementui/View/MainMenu.fxml:12
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)
at javafx.fxml.FXMLLoader.access$700(FXMLLoader.java:103)
at javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:922)
at javafx.fxml.FXMLLoader$InstanceDeclarationElement.processAttribute(FXMLLoader.java:971)
at javafx.fxml.FXMLLoader$Element.processStartElement(FXMLLoader.java:220)
at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:744)
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2707)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2527)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2409)
at inventorymanagementui.InventoryManagementUI.start(InventoryManagementUI.java:69)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$162(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$175(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$173(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$174(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException: inventorymanagementui.MainMenu.MainMenuController
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:920)
... 17 more
事实证明，当我重构代码时，我忘记从以前的库存管理UI更改fx：id声明。MainMenu.MainMenuController to inventorymanagementui.控制器.主菜单控制器