为什么此JavaFX选项卡窗格示例不起作用？

-1

package multitabpane; 

import java.io.IOException; 
import java.util.logging.Level; 
import java.util.logging.Logger; 
import javafx.application.Application; 
import javafx.fxml.FXMLLoader; 
import javafx.scene.Scene; 
import javafx.scene.input.MouseEvent; 
import javafx.scene.layout.AnchorPane; 
import javafx.stage.Stage; 
import javafx.stage.StageStyle; 

public class MainApp extends Application 
{ 
    private Stage primaryStage; 
    private AnchorPane rootLayout; 

/** The horizontal offset for making the rootLayout movable */ 
    private double xOffset = 0; 
/** The vertical offset for making the rootLayout movable */ 
    private double yOffset = 0; 

    public MainApp() {} 

    @Override 
    public void start(Stage primaryStage){ 
    this.primaryStage = primaryStage; 
    //Get rid of the windoze crap 
    primaryStage.initStyle(StageStyle.UNDECORATED); 
    initRootLayout(); 
    //Make the screen movable by a drag and drop 
    rootLayout.setOnMousePressed((MouseEvent event) -> { 
     xOffset = event.getSceneX(); 
     yOffset = event.getSceneY(); 
    }); 
    rootLayout.setOnMouseDragged((MouseEvent event) -> { 
     primaryStage.setX(event.getScreenX() - xOffset); 
     primaryStage.setY(event.getScreenY() - yOffset); 
    }); 

    } 

/** 
    * Initializes the root layout. 
    */ 
    public void initRootLayout() 
    { 
    try 
    { 
     // Load root layout from fxml file. 
     FXMLLoader loader = new FXMLLoader(); 
    Loader.setLocation(MainApp.class.getResource("view/MainController.fxml")); 
     rootLayout = (AnchorPane)loader.load(); 
     // Show the scene containing the root layout. 
     Scene scene = new Scene(rootLayout); 
     primaryStage.setScene(scene); 
     primaryStage.show(); 
    } catch (IOException e) {} 
    } 

/** 
    * Returns the main stage. 
    * @return 
    */ 
    public Stage getPrimaryStage() { 
    return primaryStage; 
    } 

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

这里的MainController.java和MainController.xml

package multitabpane.view; 

import javafx.fxml.FXML; 
import javafx.scene.layout.AnchorPane; 

public class MainController { 
    // Inject tab content. 
    @FXML private AnchorPane fooTabPage; 
// Inject controller 
    @FXML private FooTabController fooTabPageController; 
// Inject tab content. Keep Commented out until the above is working 
// @FXML private BarTabPage barTabPage; 
    // Inject controller 
// @FXML private BarTabController barTabPageController; 
}

和

<?xml version="1.0" encoding="UTF-8"?> 

<?import java.lang.*?> 
<?import java.util.*?> 
<?import javafx.scene.*?> 
<?import javafx.scene.control.*?> 
<?import javafx.scene.layout.*?> 

<AnchorPane id="AnchorPane" prefHeight="400.0" prefWidth="600.0" xmlns:fx="http://javafx.com/fxml/1"> 
<TabPane id="tabPane" prefHeight="400.0" prefWidth="600.0"> 
    <tabs> 
     <Tab text="Tab 1"> 
      <content> 
       <fx:include fx:id="fooTabPage" source="fooTabPage.fxml"/> 
      </content> 
     </Tab> 
     <Tab text="Tab 2"> 
      <content> 
       <!-- commented out until I can get the above to work --> 
       <!-- fx:include fx:id="barTabPage" source="barTabPage.fxml"/ --> 
      </content> 
     </Tab> 
    </tabs> 
</TabPane> 
</AnchorPane>

这里的FooTabController：

package multitabpane.view; 

import javafx.fxml.FXML; 
import javafx.scene.layout.AnchorPane; 

class FooTabController { 
    @FXML private AnchorPane fooTabPage; 
}

最后，这是FooTabPage.java和xml：

package multitabpane.view; 

class FooTabPage {}

和

<?xml version="1.0" encoding="UTF-8"?> 
<?import java.lang.*?> 
<?import java.util.*?> 
<?import javafx.scene.*?> 
<?import javafx.scene.control.*?> 
<?import javafx.scene.layout.*?> 

    <AnchorPane fx:id="fooTabPage" prefHeight="400.0" prefWidth="600.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/2.2" fx:controller="multitabpane.view.FooTabController" />

最后是转储当我尝试运行内置项目：

Executing D:\J2EE\MultiTabPane\dist\run679227950\MultiTabPane.jar using platform C:\Program Files\Java\jdk1.8.0_60\jre/bin/java 
Jun 21, 2017 9:14:22 AM multitabpane.MainApp initRootLayout 
Error in MainApp:initRootLayout() 
SEVERE: null 
file:/D:/J2EE/MultiTabPane/dist/run679227950/MultiTabPane.jar!/multitabpane/view/fooTabPage.fxml:9 
javafx.fxml.LoadException: 
file:/D:/J2EE/MultiTabPane/dist/run679227950/MultiTabPane.jar!/multitabpane/view/MainController.fxml:14

文件：/ D：/J2EE/MultiTabPane/dist/run679227950/MultiTabPane.jar！/multitabpane/view/fooTabPage.fxml：9 file：/ D：/J2EE/MultiTabPane/dist/run679227950/MultiTabPane.jar！/ multitabpane/view/MainController .fxm L：14

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:934) 
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.access$2700(FXMLLoader.java:103) 
at javafx.fxml.FXMLLoader$IncludeElement.constructValue(FXMLLoader.java:1143) 
at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:746) 
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2707) 
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2527) 
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441) 
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2409) 
at multitabpane.MainApp.initRootLayout(MainApp.java:58) 
at multitabpane.MainApp.start(MainApp.java:35) 
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$163(LauncherImpl.java:863) 
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$176(PlatformImpl.java:326) 
at com.sun.javafx.application.PlatformImpl.lambda$null$174(PlatformImpl.java:295) 
at java.security.AccessController.doPrivileged(Native Method) 
at com.sun.javafx.application.PlatformImpl.lambda$runLater$175(PlatformImpl.java:294) 
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95) 
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method) 
at com.sun.glass.ui.win.WinApplication.lambda$null$149(WinApplication.java:191) 
at java.lang.Thread.run(Thread.java:745) 



Caused by: java.lang.IllegalAccessException: Class sun.reflect.misc.ReflectUtil can not access a member of class multitabpane.view.FooTabController with modifiers "" 
     at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:102) 
     at java.lang.Class.newInstance(Class.java:436) 
     at sun.reflect.misc.ReflectUtil.newInstance(ReflectUtil.java:51) 
     at javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:927) 
     ... 24 more

来源

2017-06-16 Rusty

例外情况是说在'MainController.fxml'中使用'fx：id =“fooTabPage”'的元素是一个'AnchorPane'：你试图通过'@ FXML'注入将它赋值给一个变量键入'FooTabPage'。 –

对不起，我根本看不到我需要做的事情。 – Rusty

这是否意味着在MainApp类中coderootLayout =（AnchorPane）loader.load（）;是错的？ – Rusty

我已经解决了这个问题，通过更改基于'tab1'和'tab2'的更有意义的名称在示例代码中的'foo'引用。

主控制器宣告标签引用：

public class MainController { 
    @FXML private AnchorPane tab1Page; 
    @FXML private AnchorPane tab2Page; 
}

在主控制器FXML标签引用绑定到自己的文件来源：

当我现在运行构建项目，我没有得到错误

<AnchorPane id="AnchorPane" prefHeight="400.0" prefWidth="600.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/2.2" fx:controller="multitabpane.view.MainController"> 
    <TabPane id="tabPane" prefHeight="400.0" prefWidth="600.0"> 
    <tabs> 
     <Tab text="Tab 1"> 
     <content> 
      <fx:include fx:id="tab1Page" source="Tab1Controller.fxml"/> 
     </content> 
     </Tab> 
     <Tab text="Tab 2"> 
     <content> 
      <fx:include fx:id="tab2Page" source="Tab2Controller.fxml"/> 
     </content> 
     </Tab> 
    </tabs> 
    </TabPane> 
</AnchorPane>

在选项卡控制器类中，为选项卡创建参考，并为用户定义的选项卡工作区域的任何其他控件引用。在我的解决方案有在每个翼片控制层次结构的按钮以及用于按键收听者“打开操作”命令：

public class Tab1Controller { 
    @FXML Tab tab1; 
    @FXML Button exitButton; 

    @FXML 
    public void exitApp() 
    { 
    System.exit(1); 
    } 
}

和

public class Tab2Controller 
{ 
    @FXML Tab tab2; 
    @FXML Button resetButton; 

    @FXML 
    public void handleReset() 
    { 
    System.out.println("Does nothing"); 
    } 
}

的选项卡控制器必须相应地引用它们的控制器：

<AnchorPane id="AnchorPane" prefHeight="400.0" prefWidth="600.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/2.2" fx:controller="multitabpane.view.Tab1Controller"> 
    <children> 
    <Button fx:id="exitButton" layoutX="92.0" layoutY="136.0" mnemonicParsing="false" onAction="#exitApp" text="Button" /> 
    </children> 
</AnchorPane>

和

<AnchorPane id="AnchorPane" prefHeight="400.0" prefWidth="600.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/2.2" fx:controller="multitabpane.view.Tab2Controller"> 
    <children> 
    <Button fx:id="resetButton" layoutX="78.0" layoutY="180.0" mnemonicParsing="false" onAction="#handleReset" text="Reset" /> 
    </children> 
</AnchorPane>

总之，有一个MainApp，三个控制器类和3个相应的FXML视图。

来源

2017-06-22 06:11:41 Rusty

我大概想这个问题，因为在类MainController，你声明fooTabPage作为FooTabPage的实例，但在MainController.fxml，您使用<AnchorPane fx:id="fooTabPage">，总之，你声明fooTabPage的差异类型在fxml和java类中。

代码

"@FXML private FooTabPage fooTabPage;"

只是改变

"@FXML private AnchorPane fooTabPage;"

在MainController

，这个问题将得到解决。因为在你的“fooTabPage.fxml”中，它的根元素是AnchorPane，所以你应该在fxml根窗格中声明与你使用的类型相同的类型。

来源

2017-06-16 18:27:53 yab

不幸的是，这个周末不幸在这个周末横跨各大洲旅行，但当我回到我的办公桌时，我会这样做。 – Rusty

<标签文本= “标签1”> <标签的文本=” 标签2" > <！ - 注释掉，直到我能得到上面的工作 - > – Rusty

可以你也发布了fooTabPage.fxml的内容吗？因为我想问题在于fooTabPage.fxml的根元素。 – yab

为什么此JavaFX选项卡窗格示例不起作用？

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