JavaFX的8个问题与FXML装载舞台

Question

我试图加载我FXML文件阶段的JavaFX 8 这里是我的更新代码

Stage window; 
private AnchorPane GuiStage; 

    public void showMainView() throws IOException 
    { 
    try{ 
     FXMLLoader loader = new MLLoader(MyViewPart.class.getResource("/bthesis/views/test.fxml")); 
     AnchorPane GuiStage = loader.load(); 
     Scene s1 = new Scene(GuiStage); 
     window.setScene(s1); 
     window.show(); 
    }catch(Exception e){ 
     System.out.println(e); 
    } 
    } 

全补丁，我FXML文件

C:\Users\Łukasz\workspace\BThesis\src\bthesis\views\test.fxml 

包名称

bthesis.views 

我加FX：合作ntroller到我的FXML文件现在我得到空指针错误。完整的错误跟踪。

Exception in Application start method 
java.lang.reflect.InvocationTargetException 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(Unknown Source) 
    at com.sun.javafx.application.LauncherImpl.launchApplication(Unknown Source) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at sun.launcher.LauncherHelper$FXHelper.main(Unknown Source) 
Caused by: java.lang.RuntimeException: Exception in Application start method 
    at com.sun.javafx.application.LauncherImpl.launchApplication1(Unknown Source) 
    at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$155(Unknown Source) 
    at java.lang.Thread.run(Unknown Source) 
Caused by: java.lang.NullPointerException 
    at bthesis.MyViewPart.showMainView(MyViewPart.java:67) 
    at bthesis.MyViewPart.start(MyViewPart.java:102) 
    at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$162(Unknown Source) 
    at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$175(Unknown Source) 
    at com.sun.javafx.application.PlatformImpl.lambda$null$173(Unknown Source) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at com.sun.javafx.application.PlatformImpl.lambda$runLater$174(Unknown Source) 
    at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(Unknown Source) 
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method) 
    at com.sun.glass.ui.win.WinApplication.lambda$null$148(Unknown Source) 
    ... 1 more 
Exception running application bthesis.MyViewPart 

Answer 1

您需要同时使用setLocation方法

loader.setLocation(MyViewPart.class.getResource("views/test.fxml")); 

如果这无助于改变你这样的路径。创建一个java类，例如助手在视图中包，然后使用它作为参考

loader.setLocation(Helper.class.getResource("test.fxml")); 

Answer 2

我认为你必须混乱设定路径。 我解释一下。

If you project directory structure is like 

    src 
    . 
    . 
    .----bthesis 
     . 
     . 
     .------views 
       . 
       . 
       .test.fxml 

然后你必须像这样设置位置路径。

loader.setLocation(MyViewPart.class.getResource("/bthesis/views/test.fxml"));