当我点击主页的“开始”按钮时,我正在主页中间加载SimulatorWindow.fxml文件。
This is the SimulatorWindow.fxml file.
在这里进入给定图像的红色标记区域,我需要加载另一个fxml文件(名为Simulator.fxml)。
这是我的SimulatorWindowController.java文件
package SortingAlgorithmSimulator.view;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import SortingAlgorithmSimulator.Main;
import javafx.application.Application;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.control.CheckBox;
import javafx.scene.control.TextArea;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;
public class SimulatorWindowController extends Application
{
private HomeController hc=new HomeController();
@FXML
private TextArea AlgorithmField;
@FXML
private CheckBox screenSize;
@FXML
public static BorderPane simu;
@FXML
private void initialize() throws IOException
{ FXMLLoader loader1=new FXMLLoader();
loader1.setLocation(Main.class.getResource("view/Simulator.fxml"));
BorderPane mainItems1=loader1.load();
simu.setCenter(mainItems1);
BufferedReader buff = null;
try {
buff = new BufferedReader(new FileReader(hc.selectedFile));
String str;
while ((str = buff.readLine()) != null)
{
AlgorithmField.appendText(str+"\n");
}
} catch (IOException e)
{
} finally
{
try { buff.close(); } catch (Exception ex) { }
}
}
@FXML
private void goHome() throws IOException
{
Main.showHome();
}
@FXML
private void goHelp() throws IOException
{
Main.showHelp();
}
@FXML
private void goAboutMe() throws IOException
{
Main.showAboutMe();
}
@FXML
private void goScreen() throws IOException
{
if(screenSize.isSelected())
{
Main.primaryStage.setFullScreen(true);
screenSize.setText("Exit Full Screen");
}
else
{
Main.primaryStage.setFullScreen(false);
screenSize.setText("Full Screen");
}
}
@FXML
private void goExit() throws IOException
{
System.exit(0);
}
@Override
public void start(Stage arg0) throws Exception
{
// TODO Auto-generated method stub
}
}
但是当我运行此代码时,它显示错误NullPointerException。
以下是错误报告
线程中的异常" JavaFX应用程序线程"了java.lang.RuntimeException: java.lang.reflect.InvocationTargetException at javafx.fxml.FXMLLoader $ MethodHandler.invoke(未知来源)at at javafx.fxml.FXMLLoader $ ControllerMethodEventHandler.handle(未知 来源)at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(未知 来源)at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(未知 来源)at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(未知 来源)at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(未知 来源)at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(未知 来源)at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(未知 来源)at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(未知 来源)at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(未知 来源)at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(未知 来源)at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(未知 来源)com.sun.javafx.event.EventUtil.fireEventImpl(未知 来源)com.sun.javafx.event.EventUtil.fireEvent(未知来源) 在javafx.event.Event.fireEvent(未知来源)at javafx.scene.Node.fireEvent(未知来源)at javafx.scene.control.Button.fire(未知来源)at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(未知 来源)at com.sun.javafx.scene.control.skin.BehaviorSkinBase $ 1.handle(未知 来源)at com.sun.javafx.scene.control.skin.BehaviorSkinBase $ 1.handle(未知 来源)at com.sun.javafx.event.CompositeEventHandler $ NormalEventHandlerRecord.handleBubblingEvent(未知 来源)at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(未知 来源)at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(未知 来源)at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(未知 来源)at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(未知 来源)at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(未知 来源)at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(未知 来源)at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(未知 来源)at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(未知 来源)at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(未知 来源)at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(未知 来源)com.sun.javafx.event.EventUtil.fireEventImpl(未知 来源)com.sun.javafx.event.EventUtil.fireEvent(未知来源) 在javafx.event.Event.fireEvent(未知来源)at javafx.scene.Scene $ MouseHandler.process(未知来源)at javafx.scene.Scene $ MouseHandler.access $ 1500(未知来源)at javafx.scene.Scene.impl_processMouseEvent(未知来源)at javafx.scene.Scene $ ScenePeerListener.mouseEvent(未知来源)at com.sun.javafx.tk.quantum.GlassViewEventHandler $ MouseEventNotification.run(未知 来源)at com.sun.javafx.tk.quantum.GlassViewEventHandler $ MouseEventNotification.run(未知 来自java.security.AccessController.doPrivileged(Native Method) 在 com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda $ handleMouseEvent $ 354(未知 来源)at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(未知 来源)at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(未知 来自)com.sun.glass.ui.View.handleMouseEvent(未知来源)at com.sun.glass.ui.View.notifyMouse(未知来源)at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)at com.sun.glass.ui.win.WinApplication.lambda $ null $ 148(未知来源) 在java.lang.Thread.run(未知来源)引起: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(未知来源)at sun.reflect.DelegatingMethodAccessorImpl.invoke(未知来源)at java.lang.reflect.Method.invoke(未知来源)at sun.reflect.misc.Trampoline.invoke(未知来源)at sun.reflect.GeneratedMethodAccessor1.invoke(未知来源)at sun.reflect.DelegatingMethodAccessorImpl.invoke(未知来源)at java.lang.reflect.Method.invoke(未知来源)at sun.reflect.misc.MethodUtil.invoke(Unknown Source)... 49更多引起 by:javafx.fxml.LoadException: /D:/Document%20Files/Java%20Programming/bin/SortingAlgorithmSimulator/view/SimulatorWindow.fxml
at javafx.fxml.FXMLLoader.constructLoadException(Unknown Source)at javafx.fxml.FXMLLoader.loadImpl(Unknown Source)at at javafx.fxml.FXMLLoader.loadImpl(未知来源)at javafx.fxml.FXMLLoader.load(未知来源)at SortingAlgorithmSimulator.Main.showSimulatorWindow(Main.java:87)at SortingAlgorithmSimulator.view.HomeController.goSimulatorWindow(HomeController.java:64) ... 58更多引起:java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(未知来源)at sun.reflect.DelegatingMethodAccessorImpl.invoke(未知来源)at java.lang.reflect.Method.invoke(未知来源)at sun.reflect.misc.Trampoline.invoke(未知来源)at sun.reflect.GeneratedMethodAccessor1.invoke(未知来源)at sun.reflect.DelegatingMethodAccessorImpl.invoke(未知来源)at java.lang.reflect.Method.invoke(未知来源)at sun.reflect.misc.MethodUtil.invoke(Unknown Source)... 63更多引起 by:java.lang.NullPointerException at SortingAlgorithmSimulator.view.SimulatorWindowController.initialize(SimulatorWindowController.java:35) ......还有72个
我该如何解决?
以下是源代码的下载链接
https://drive.google.com/folderview?id=0B7pxly3GctSNQ1FaajY4LTFOQnM&usp=sharing