JavaFX图表-Java.lang.IllegalArgumentException：添加了重复的系列 [英] JavaFX Chart - Java.lang.IllegalArgumentException : Duplicate series added

问题描述

我正在使用 clear（）方法从图表中删除数据。

I'm using clear() method for removing data from chart.

@FXML
public void restartButtonClicked() {
    System.out.println("Restarting...");
    timeLine.getKeyFrames().clear();

    axesTest.getData().clear();
}

在此功能中，但是一旦单击按钮，它就会起作用-但第二个当我要单击它时，它会引发异常：

In this function, but once button get clicked - it works.. but second time while I am gonna click it, it throw exception :

Exception in thread "JavaFX Application Thread" java.lang.IllegalArgumentException: Duplicate series added
    at javafx.scene.chart.XYChart.lambda$new$550(Unknown Source)
    at com.sun.javafx.collections.ListListenerHelper$SingleChange.fireValueChangedEvent(Unknown Source)
    at com.sun.javafx.collections.ListListenerHelper.fireValueChangedEvent(Unknown Source)
    at javafx.collections.ObservableListBase.fireChange(Unknown Source)
    at javafx.collections.ListChangeBuilder.commit(Unknown Source)
    at javafx.collections.ListChangeBuilder.endChange(Unknown Source)
    at javafx.collections.ObservableListBase.endChange(Unknown Source)
    at javafx.collections.ModifiableObservableListBase.addAll(Unknown Source)
    at sample.Controller.startButtonClicked(Controller.java:138)
    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.reflect.misc.Trampoline.invoke(Unknown Source)
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at sun.reflect.misc.MethodUtil.invoke(Unknown Source)
    at javafx.fxml.FXMLLoader$MethodHandler.invoke(Unknown Source)
    at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(Unknown Source)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
    at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
    at javafx.event.Event.fireEvent(Unknown Source)
    at javafx.scene.Node.fireEvent(Unknown Source)
    at javafx.scene.control.Button.fire(Unknown Source)
    at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(Unknown Source)
    at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(Unknown Source)
    at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(Unknown Source)
    at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(Unknown Source)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
    at com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
    at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
    at javafx.event.Event.fireEvent(Unknown Source)
    at javafx.scene.Scene$MouseHandler.process(Unknown Source)
    at javafx.scene.Scene$MouseHandler.access$1500(Unknown Source)
    at javafx.scene.Scene.impl_processMouseEvent(Unknown Source)
    at javafx.scene.Scene$ScenePeerListener.mouseEvent(Unknown Source)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(Unknown Source)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$354(Unknown Source)
    at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(Unknown Source)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(Unknown Source)
    at com.sun.glass.ui.View.handleMouseEvent(Unknown Source)
    at com.sun.glass.ui.View.notifyMouse(Unknown Source)
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
    at com.sun.glass.ui.win.WinApplication.lambda$null$148(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

所以问题出在方法的138行以及159行代码中：

So the problem is in 138 line as well as in 159 line of code from method :

@SuppressWarnings("unchecked")
@FXML
public void startButtonClicked(ActionEvent event) {
if (comboBox.getValue() == null) {
    System.out.print("Nie wybrano opcji.");
} else {
    if(comboBox.getValue().equals("Gaussian Wave : non-Dispersive")) {
        System.out.println("Gaussian Wave : non-Dispersive");
        axesTest.setTitle("Gaussian Wave : non-Dispersive");

        series.setName("bla");
        series1.setName("ssad");
        series2.setName("asf");

        seriesList.add(series);
        seriesList.add(series1);
        seriesList.add(series2);

        timeLine = new Timeline();
        gaussianWave = new GaussianWave( seriesList, axes, timeLine );
        seriesList = gaussianWave.draw();
        gaussianWave.update(axesTest);

        axesTest.getData().retainAll();
        axesTest.getData().addAll(seriesList);
    } else if(comboBox.getValue().equals("Gaussian Wave : Dispersive")) {
        System.out.println("Gaussian Wave : Dispersive");
        axesTest.setTitle("Gaussian Wave : Dispersive");

        series.setName("bla");
        series1.setName("ssad");
        series2.setName("asf");

        seriesList.add(series);
        seriesList.add(series1);
        seriesList.add(series2);

        timeLine = new Timeline();
        gaussianWaveDispersive = new GaussianWaveDispersive( seriesList, axes, timeLine );
        seriesList = gaussianWaveDispersive.draw();
        gaussianWaveDispersive.update(axesTest);

        axesTest.getData().retainAll();
        axesTest.getData().addAll(seriesList);
    }
}

}

并且问题出在：

axesTest.getData().addAll(seriesList);

在清除图表中的所有数据后，为什么会出现此异常？我该如何解决？

Why do I get this exception after clearing all of data from the chart ? How could I fix this?

推荐答案

您清除存储在ObservableList https://docs.oracle.com/javase/8/javafx/api/javafx/scene/chart/XYChart.Series.html#dataProperty rel = nofollow noreferrer> dataProperty 系列的$ c> ：

You clear the ObservableList stored in the dataProperty of the Series:

axesTest.getData().clear();

但是您使用的是称为 seriesList ，而不是直接添加 Data ：

but you use an intermediate list(?) called seriesList, rather than adding Data directly:

seriesList.add(series);
seriesList.add(series1);
seriesList.add(series2)

...

axesTest.getData().addAll(seriesList);

问题是您不清除 seriesList 在添加元素之前，因此在第二次单击时包含两次元素，这将导致 IllegalArgumentException 。

The problem is you don't clear seriesList before adding the elements, so it contains the elements on the second click twice, which will result in an IllegalArgumentException.

实际上我不知道

gaussianWave = new GaussianWave( seriesList, axes, timeLine );
seriesList = gaussianWave.draw();

但 seriesList 似乎包含前一个这些行之后的 Data 对象。

but it seems that seriesList contains the previous Data objects after these lines.

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