我是新来的javafx,我试图做一个gui,当点击一个按钮时,它会转到另一个窗口。我尝试阅读Stack Overflow上找到的许多答案。我甚至尝试从一开始就重新开始这个项目......但是我一直在得到同样的错误。在应用程序启动方法中的例外
也就是说例外是应用程序启动方法 java.lang.reflect.InvocationTargetException JavaFX的
我的主要
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.stage.StageStyle;
public class SkyTravelsFx extends Application {
@Override
public void start(Stage stage) throws Exception {
Parent root = FXMLLoader.load(getClass().getResource("Login.fxml"));
stage.initStyle(StageStyle.UNDECORATED);
Scene scene = new Scene(root);
stage.setScene(scene);
stage.show();
}
public static void main(String[] args) {
launch(args);
}
}
LoginController.java
package skytravelsfx;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.fxml.Initializable;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.stage.Stage;
import javafx.stage.StageStyle;
public class LoginController implements Initializable {
@FXML
TextField username;
@FXML
TextField password;
@FXML
Button user;
@FXML
Button admin;
@FXML
Button login;
@FXML
public void btnClicked (ActionEvent actionEvent){
try{
FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("User.fxml"));
Parent root=(Parent) fxmlLoader.load();
Stage stage = new Stage();
Scene scene = new Scene(root);
stage.setScene(scene);
stage.initStyle(StageStyle.UNDECORATED);
stage.show();
((Stage)(((Button)actionEvent.getSource()).getScene().getWindow())).hide();
}catch(Exception e){
e.printStackTrace();
}
}
@Override
public void initialize(URL location, ResourceBundle resources) {
throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}
}
请注意,我仍然避风港”在UserController.java中写入任何代码 我刚刚为User.fxml创建了用户界面
Login.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.image.*?>
<?import javafx.scene.shape.*?>
<?import javafx.scene.text.*?>
<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<AnchorPane id="AnchorPane" prefHeight="766.0" prefWidth="1366.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/8" fx:controller="skytravelsfx.LoginController">
<children>
<ImageView fitHeight="866.0" fitWidth="1397.0" layoutX="10.0" layoutY="11.0" pickOnBounds="true" preserveRatio="true">
<image>
<Image url="@../../../SkyTravelFx/src/goodwp.com_25168.jpg" />
</image>
</ImageView>
<Label fx:id="label" layoutX="126" layoutY="120" minHeight="16" minWidth="69" />
<Label fx:id="label1" layoutX="565.0" layoutY="517.0" minHeight="16" minWidth="69" text="Select User">
<font>
<Font size="18.0" />
</font>
</Label>
<Rectangle arcHeight="5.0" arcWidth="5.0" fill="#095a77" height="140.0" stroke="BLACK" strokeType="INSIDE" strokeWidth="0.0" width="1386.0" />
<Label fx:id="label11" layoutX="56.0" layoutY="33.0" minHeight="16" minWidth="69" text="Sky Travels" textFill="WHITE">
<font>
<Font name="System Italic" size="72.0" />
</font>
</Label>
<Label fx:id="label12" layoutX="432.0" layoutY="91.0" minHeight="16" minWidth="69" text="Making your destination closer..." textFill="WHITE">
<font>
<Font name="System Italic" size="18.0" />
</font>
</Label>
<AnchorPane layoutX="83.0" layoutY="252.0" prefHeight="507.0" prefWidth="383.0">
<children>
<ImageView fitHeight="191.0" fitWidth="234.0" layoutX="96.0" layoutY="6.0" pickOnBounds="true" preserveRatio="true">
<image>
<Image url="@../../../SkyTravelFx/src/icon-default-profile.png" />
</image>
</ImageView>
<Button fx:id="login" layoutX="153.0" layoutY="440.0" onAction="#handleButtonAction" style="-fx-background-color: #095a77;" text="Log In" textFill="WHITE">
<font>
<Font size="18.0" />
</font>
</Button>
<Label fx:id="label2" layoutX="152.0" layoutY="308.0" minHeight="16" minWidth="69" text="Password">
<font>
<Font size="18.0" />
</font>
</Label>
<Label fx:id="label2" layoutX="150.0" layoutY="214.0" minHeight="16" minWidth="69" text="Username">
<font>
<Font size="18.0" />
</font>
</Label>
<TextField fx:id="username" layoutX="115.0" layoutY="241.0" />
<TextField fx:id="password" layoutX="115.0" layoutY="335.0" />
</children>
</AnchorPane>
<Button fx:id="admin" layoutX="621.0" layoutY="592.0" mnemonicParsing="false" style="-fx-background-color: #095a77;" text="Log In as Admin" textFill="WHITE">
<font>
<Font size="18.0" />
</font>
</Button>
<Button fx:id="user" layoutX="621.0" layoutY="675.0" mnemonicParsing="false" onAction="#btnClicked" prefHeight="39.0" prefWidth="153.0" style="-fx-background-color: #095a77;" text="Log In as User" textFill="WHITE">
<font>
<Font size="18.0" />
</font>
</Button>
</children>
</AnchorPane>
下面是运行时错误我收到。
在 sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)在应用启动方法 java.lang.reflect.InvocationTargetException在 sun.reflect.NativeMethodAccessorImpl.invoke0(本机方法)异常 在 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 在java.lang.reflect.Method.invoke(Method.java:498)在 com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java :389) at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherI mpl.java:328) 在sun.reflect.NativeMethodAccessorImpl.invoke0(本机方法)在 sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 在 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java: 43) at java.lang.reflect.Method.invoke(Method.java:498)at sun.launcher.LauncherHelper $ FXHelper.main(LauncherHelper.java:767) 引发:java.lang.RuntimeException:Exception in应用程序启动 方法在 com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917) 在 com.sun.javafx.application.LauncherImpl.lambda $ launchApplication $ 155(LauncherImpl.java:182) at java.lang.Thread.run(Thread.java:745)导致: javafx.fxml.LoadException:错误解析 onAction ='#handleButtonAction',或者事件处理程序不在 命名空间中,或者存在脚本中出现错误。 文件:/ C:/Users/Dell/Documents/NetBeansProjects/SkyTravelsFx/dist/run1245920268/SkyTravelsFx.jar /skytravelsfx/Login.fxml:47
在 javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java :2597) 在javafx.fxml.FXMLLoader.access $ 100(FXMLLoader.java:103)在 javafx.fxml.FXMLLoader $ Element.processEventHandlerAttributes(FXMLLoader.java:610) 在 javafx.fxml.FXMLLoader $ ValueElement.processEndElement (FXMLLoader.java:770) at javafx.fxml.FXMLLoader.processEndElement(FXMLLoader.java:2823)at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader。的java:2532)在 javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)在 javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3214)在 javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java: 3175)在 javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3148)处 javafx.fxml.FXMLLoader.loadImpl javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3124)(FXMLLoader.java:3104)在 javafx.fxml.FXMLLoader.load(FXMLLoader.java:3097)在 skytravelsfx.SkyTravelsFx.start(SkyTravelsFx.java:23)在 com.sun.javafx.application.LauncherImpl.lambda $ launchApplication1 $ 162(LauncherImpl.java :863) at com.sun.javafx.application.PlatformImpl.lambda $ runAndWait $ 175(PlatformImpl.j ava:326) at com.sun.javafx.application.PlatformImpl.lambda $ null $ 173(PlatformImpl.java:295) at java.security.AccessController.doPrivileged(Native Method)at com.sun.javafx.application .PlatformImpl.lambda $ runLater $ 174(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 $ 148(WinApplication.java:191) ... 1 more运行应用程序的异常skytravelsfx.SkyTravelsFx Java结果:1删除目录 C:\ Users \ Dell \ Documents \ NetBeansProjects \ SkyTravelsFx \ dist \ run1245920268 jfxsa运行:BUILD SUCCESSFUL(总时间:4秒)
谢谢James_D向我展示它。我是新来的java FX,并失去了寻找符合我的答案。 –