在JavaFX中动态加载图像到Anchorpane

我有这个按钮，当我想动态添加图像到我的AnchorPane，但目前它没有按预期工作 . 我正在尝试在JavaFX标签内加载图像，这是我的代码 .

FXMLDocumentController.java

public class FXMLDocumentController implements Initializable {

    @FXML
    private Label label;
    public AnchorPane pane;

    @FXML
    private void handleButtonAction(ActionEvent event) throws IOException {

      //   BufferedImage image = ImageIO.read(new File("2d.png"));
      Label label = new Label();
      Image image = new Image(getClass().getResourceAsStream("2d.png"));
      label = new Label("search", new ImageView(image));
      pane.getChildren().addAll(label);      
    }

    @Override
    public void initialize(URL url, ResourceBundle rb) {
        // TODO
    }    

}

FXMLDocument.fxml

<AnchorPane id="AnchorPane" fx:id="AnchorPane" prefHeight="521.0" prefWidth="548.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/8.0.111" fx:controller="testingcards.FXMLDocumentController">
    <children>
        <Button fx:id="button" layoutX="126" layoutY="90" onAction="#handleButtonAction" text="Click Me!" />
        <Label fx:id="label" layoutX="126" layoutY="120" minHeight="16" minWidth="69" />
      <Label layoutX="143.0" layoutY="366.0" prefHeight="121.0" prefWidth="69.0" text="Label" />
    </children>
</AnchorPane>

错误

线程“JavaFX Application Thread”中的异常java.lang.RuntimeException：javafx.fxml.FXMLLoader中的java.lang.reflect.InvocationTargetException $ Javafx.fxml.FXMLLoader $ ControllerHandler.invoke（FXMLLoader.java:1774）$ ControllerMethodEventHandler.handle（ FXMLLoader.java:1657）com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent（CompositeEventHandler.java:86）at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent（EventHandlerManager.java:238）at com.sun.javafx位于com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent（CompositeEventDispatcher.java:59）的.event.EventHandlerManager.dispatchBubblingEvent（EventHandlerManager.java：191）at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent（BasicEventDispatcher.java:58 ）com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent（EventDispatchChainImpl.java:114）at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent（BasicEventDispatcher.java:56）at com.sun.javafx.event.EventDispatchChainImpl . dispatchEv ent（EventDispatchChainImpl.java:114）com.sun.javafx.event.BasicEventDispatcher.dispatchEvent（BasicEventDispatcher.java:56）com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent（EventDispatchChainImpl.java:114）at com.sun位于javafx.event.Event.fireEvent（Event.java:198）的com.sun.javafx.event.EventUtil.fireEvent（EventUtil.java:49）中的.javafx.event.EventUtil.fireEventImpl（EventUtil.java:74）at javafx.scene.Node.fireEvent（Node.java:8411）at javafx.scene.control.Button.fire（Button.java:185）at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased（ButtonBehavior . java：182）at com.sun.javafx.scene.control.skin.BehaviorSkinBase $ 1.handle（BehaviorSkinBase.java:96）at com.sun.javafx.scene.control.skin.BehaviorSkinBase $ 1.handle（BehaviorSkinBase.java： 89）com.sun.javafx.event.CompositeEventHandler $ NormalEventHandlerRecord.handleBubblingEvent（CompositeEventHandler.java:218）at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent（CompositeEventHandler.java:80）at com . com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent（EventHandlerManager.java:191）中的sun.javafx.event.EventHandlerManager.dispatchBubblingEvent（EventHandlerManager.java:238）位于com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent（CompositeEventDispatcher . java：59）com.sun.javafx.event.BasicEventDispatcher.dispatchEvent（BasicEventDispatcher.java:58）at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent（EventDispatchChainImpl.java:114）at com.sun.javafx.event com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent（EventDispatchChainImpl.java:114）中的.BasicEventDispatcher.dispatchEvent（BasicEventDispatcher.java:56），位于com.sun.javafx.event.BasicEventDispatcher.dispatchEvent（BasicEventDispatcher.java:56）at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent（EventDispatchChainImpl.java:114）com.sun.javafx.event.EventUtil.fireEventImpl（EventUtil.java:74）at com.sun.javafx.event.EventUtil.fireEvent（ EventUtil.java:54）在javafx.event.Event.fireEvent （event.java:198）javafx.scene.Scene $ MouseHandler.process（Scene.java:3757）at javafx.scene.Scene $ MouseHandler.access $ 1500（Scene.java:3485）at javafx.scene.Scene.impl_processMouseEvent （Scene.java:1762）位于com的com.sun.javafx.tk.quantum.GlassViewEventHandler $ MouseEventNotification.run（GlassViewEventHandler.java:380）的javafx.scene.Scene $ ScenePeerListener.mouseEvent（Scene.java:2494） . sun.javafx.tk.quantum.GlassViewEventHandler $ MouseEventNotification.run（GlassViewEventHandler.java:294）at java.security.AccessController.doPrivileged（Native Method）at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda $ handleMouseEvent $ 354（ Glass.comEventHandler.java:416）com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock（QuantumToolkit.java:389）at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent（GlassViewEventHandler.java:415）at com .sun.glass.ui.View.handleMouseEvent（View.java:555）at com.sun.glass.ui.View.notifyMouse（View.java:937）at com.sun.glass.ui.win.WinApplicatio n._runLoop（Native Method）at com.sun.glass.ui.win.WinApplication.lambda $ null $ 148（WinApplication.java:191）at java.lang.Thread.run（Thread.java:745）引起：java位于sun.reflect.NalMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62）的sun.reflect.NativeMethodAccessorImpl.invoke0（本地方法）的.lang.reflect.InvocationTargetException，位于sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43） .lang.reflect.Method.invoke（Method.java:498）at sun.reflect.misc.Trampoline.invoke（MethodUtil.java:71）at sun.reflect.GeneratedMethodAccessor1.invoke（Unknown Source）at atsun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）at java.lang.reflect.Method.invoke（Method.java:498）at sun.reflect.misc.MethodUtil.invoke（MethodUtil.java:275）at javafx .fxml.FXMLLoader $ MethodHandler.invoke（FXMLLoader.java:1769）... 48更多引起：testingcards.FXMLDocumentController.handleButtonAction（FXMLDocumentController.java:46）中的java.lang.NullPointerException

我正在使用netbeans IDE