JavaFX 8加载外部FXML

Question

当查看JavaFX SceneBuilder时，它能够加载任何类型的FXML。则忽略根节点或控制器。scenebuilder能够加载任何类型的fxml并显示其组件。

有没有人想要一种方法来加载一个fxml，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（比方说）一个窗格中。

任何想法都将受到欢迎（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，不考虑fx：id等。

例外情况：

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

Answer 1

有fx:controller和fx:root属性。别糊涂了。您可以通过将加载的对象强制转换为父超类来忽略根布局类型。但我认为没有办法无视fxml文件中定义的fx:controller。在这种情况下，您需要自己加载文件，并从文件中删除fx：controller及其值。