0
package application;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.fxml.Initializable;
import javafx.scene.Node;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.TextField;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.stage.Stage;
public class PrinterController implements Initializable {
@FXML private Button ButtonHome;
@FXML private TableView <Printer> table;
@FXML private TableColumn < Printer, String > Make;
@FXML private TableColumn < Printer, Integer > Model;
@FXML private TableColumn < Printer, Integer > SerialNO;
@FXML private TableColumn < Printer, Integer > IP;
@FXML private TableColumn < Printer, Integer > MAC;
@FXML private TableColumn < Printer, String > Cartridge;
@FXML private TableColumn < Printer, String > Date;
@FXML private TableColumn < Printer, String > Other;
@FXML private TableColumn < Printer, String > Remarks;
@FXML private TextField makeInput;
@FXML private TextField modelInput;
@FXML private TextField serialInput;
@FXML private TextField ipInput;
@FXML private TextField macInput;
@FXML private TextField cartridgeInput;
@FXML private TextField dateInput;
@FXML private TextField otherInput;
@FXML private TextField remarksInput;
@FXML private Button done;
@FXML private Button buttonadd1;
//Executing Home Button
public ObservableList <Printer> list = FXCollections.observableArrayList(
new Printer("HP", 230, 001, 192168, 888, "HP", "24", "-", "New")
);
public void AddforPrinter(ActionEvent event) throws Exception {
Stage primaryStage = new Stage();
Parent root = FXMLLoader.load(getClass().getResource("/application/PrinterAdd.fxml"));
Scene scene = new Scene(root, 400, 400);
scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
primaryStage.setScene(scene);
primaryStage.show();
//primaryStage.
}
// public void AddforPrinter(ActionEvent event) throws Exception
// {
// ((Node)(event.getSource())).getScene().getWindow().hide();
// Stage primaryStage=new Stage();
// Parent root = FXMLLoader.load(getClass().getResource("/application/PrinterAdd.fxml"));
// Scene scene = new Scene(root,500,500);
// scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
// primaryStage.setScene(scene);
// primaryStage.show();
//
// }
public void Home(ActionEvent event) throws Exception {
((Node)(event.getSource())).getScene().getWindow().hide();
Stage primaryStage = new Stage();
Parent root = FXMLLoader.load(getClass().getResource("/application/Main.fxml"));
Scene scene = new Scene(root, 448, 388);
scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
primaryStage.setScene(scene);
primaryStage.show();
}
//Executing Add Button
@Override
public void initialize(URL location, ResourceBundle resources) {
Make.setCellValueFactory(new PropertyValueFactory < Printer, String > ("Make"));
Model.setCellValueFactory(new PropertyValueFactory < Printer, Integer > ("Model"));
SerialNO.setCellValueFactory(new PropertyValueFactory < Printer, Integer > ("SerialNO"));
IP.setCellValueFactory(new PropertyValueFactory < Printer, Integer > ("IP"));
MAC.setCellValueFactory(new PropertyValueFactory < Printer, Integer > ("MAC"));
Cartridge.setCellValueFactory(new PropertyValueFactory < Printer, String > ("Cartridge"));
Date.setCellValueFactory(new PropertyValueFactory < Printer, String > ("Date"));
Other.setCellValueFactory(new PropertyValueFactory < Printer, String > ("Other"));
Remarks.setCellValueFactory(new PropertyValueFactory < Printer, String > ("Remarks"));
table.setItems(list);
}
public void onDone(ActionEvent event) {
// This code is for supplying the data
Printer entry = new Printer(makeInput.getText(), Integer.parseInt(modelInput.getText()), Integer.parseInt(serialInput.getText()),
Integer.parseInt(ipInput.getText()), Integer.parseInt(macInput.getText()), cartridgeInput.getText(), dateInput.getText(),
otherInput.getText(), remarksInput.getText());
// This code is for fetching the data
list.add(entry);
// This code is for clearing the text fields
}
}
所以每次點擊添加按鈕時它都會拋出一個空的ppinter異常。它之前也給我類似的錯誤，但我可以通過在父根中的fxml文件之前提供軟件包名稱來修復它。每當我點擊添加按鈕，我得到一個錯誤。 （Java FX場景生成器和Eclipse）
package application;
import javafx.beans.property.SimpleIntegerProperty;
import javafx.beans.property.SimpleStringProperty;
public class Printer {
private final SimpleStringProperty make;
private final SimpleIntegerProperty model;
private final SimpleIntegerProperty serialNO;
private final SimpleIntegerProperty IP;
private final SimpleIntegerProperty MAC;
private final SimpleStringProperty Cartridge;
private final SimpleStringProperty date;
private final SimpleStringProperty other;
private final SimpleStringProperty remarks;
public Printer(String make, Integer model, Integer serialNO, Integer IP, Integer MAC, String cartridge, String date,
String other, String remarks) {
super();
this.make = new SimpleStringProperty(make);
this.model = new SimpleIntegerProperty(model);
this.serialNO = new SimpleIntegerProperty(serialNO);
this.IP = new SimpleIntegerProperty(IP);
this.MAC = new SimpleIntegerProperty(MAC);
this.Cartridge = new SimpleStringProperty(cartridge);
this.date = new SimpleStringProperty(date);
this.other = new SimpleStringProperty(other);
this.remarks = new SimpleStringProperty(remarks);
}
public String getMake() {
return make.get();
}
public Integer getModel() {
return model.get();
}
public Integer getSerialNO() {
return serialNO.get();
}
public Integer getIP() {
return IP.get();
}
public Integer getMAC() {
return MAC.get();
}
public String getCartridge() {
return Cartridge.get();
}
public String getDate() {
return date.get();
}
public String getOther() {
return other.get();
}
public String getRemarks() {
return remarks.get();
}
}
每當我點擊添加在我的打印場景它給我錯誤和錯誤是關係到運行時間和零點異常。我不知道如何解決這個問題。我已經嘗試了很多，失敗的每一次
Exception in thread "JavaFX Application Thread"
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java: 1774)
at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java: 1657)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java: 86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java: 238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java: 191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java: 59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java: 58)
at 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.dispatchEvent(EventDispatchChainImpl.java: 114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java: 56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java: 114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java: 74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java: 49)
at javafx.event.Event.fireEvent(Event.java: 198)
at javafx.scene.Node.fireEvent(Node.java: 8413)
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$1.handle(BehaviorSkinBase.java: 89)
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java: 218)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java: 80)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java: 238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java: 191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java: 59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java: 58)
at 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.dispatchEvent(EventDispatchChainImpl.java: 114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java: 56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java: 114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java: 74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java: 54)
at javafx.event.Event.fireEvent(Event.java: 198)
at javafx.scene.Scene$MouseHandler.process(Scene.java: 3757)
at javafx.scene.Scene$MouseHandler.access$1500(Scene.java: 3485)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java: 1762)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java: 2494)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java: 381)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java: 295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$354(GlassViewEventHandler.java: 417)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java: 389)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java: 416)
at com.sun.glass.ui.View.handleMouseEvent(View.java: 555)
at com.sun.glass.ui.View.notifyMouse(View.java: 937)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java: 62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java: 43)
at java.lang.reflect.Method.invoke(Method.java: 498)
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java: 71)
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java: 43)
at java.lang.reflect.Method.invoke(Method.java: 498)
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java: 275)
at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java: 1769)
...45 more
Caused by: java.lang.NullPointerException: Location is required.
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java: 3207)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java: 3175)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java: 3148)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java: 3124)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java: 3104)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java: 3097)
at application.PrinterController.AddforPrinter(PrinterController.java: 58)
...55 more
我認爲你必須添加' @ FXML'註釋到'onDone'方法 – Sunflame
沒有發現'/ application/PrinterAdd.fxml'資源...查看無數其他問題：https：//stackoverflow.com/searc h？q =％5Bjavafx％5D + location + is + required + is％3Aq – fabian
我沒有爲我的方法添加@fxml註釋，但它仍然不起作用。 –