查看 JavaFX SceneBuilder 时，它能够加载任何类型的 fxml。根节点或控制器被忽略。场景构建器能够加载任何类型的 fxml 并显示其组件。
有没有人喜欢加载 fxml 的方法，而不考虑其字段的 id、控制器或根节点的类型？
问题是，当我尝试加载任何 fxml 时，它只能加载，如果我设置了正确的根类型。我想（通过 FileChooser）将我能找到的任何 FXML 加载到（比如说）窗格中。
任何想法都将不胜感激（www中的所有帮助都指向使用特定根类型的加载机制，因此根类型是已知的）。我想加载未知的根类型，而不考虑 fx:id 等。
例外：
Exception in Application start method
Exception in thread "main" java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$152(LauncherImpl.java:182)
at com.sun.javafx.application.LauncherImpl$$Lambda$2/1531448569.run(Unknown Source)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: javafx.fxml.LoadException:
/C:/Users/Dominik/Documents/fhnw/bath/svn/examples/fxmlloader/out/production/FxHeatMap/eu/hansolo/fx/heatmap/fxmlload/Application.fxml:20
at eu.hansolo.fx.heatmap.fxmlload.FXMLLoader.start(FXMLLoader.java:34)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$159(LauncherImpl.java:863)
at com.sun.javafx.application.LauncherImpl$$Lambda$66/84373524.run(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$172(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl$$Lambda$47/1537074899.run(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$null$170(PlatformImpl.java:295)
at com.sun.javafx.application.PlatformImpl$$Lambda$50/1947223685.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$171(PlatformImpl.java:294)
at com.sun.javafx.application.PlatformImpl$$Lambda$48/835743810.run(Unknown Source)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$145(WinApplication.java:101)
at com.sun.glass.ui.win.WinApplication$$Lambda$38/1962582134.run(Unknown Source)
... 1 more
Caused by: javafx.fxml.LoadException:
/C:/Users/Dominik/Documents/fhnw/bath/svn/examples/fxmlloader/out/production/FxHeatMap/eu/hansolo/fx/heatmap/fxmlload/Application.fxml:20
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2605)
at javafx.fxml.FXMLLoader.access$700(FXMLLoader.java:104)
at javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:918)
at javafx.fxml.FXMLLoader$InstanceDeclarationElement.processAttribute(FXMLLoader.java:967)
at javafx.fxml.FXMLLoader$Element.processStartElement(FXMLLoader.java:216)
at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:740)
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2711)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2531)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2445)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3218)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3179)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3152)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3128)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3108)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3101)
at eu.hansolo.fx.heatmap.fxmlload.FXMLLoader.start(FXMLLoader.java:32)
... 14 more
Caused by: java.lang.ClassNotFoundException: sample.MainController
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:916)
... 27 more
Process finished with exit code 1