showAdminLoginScene() 方法产生错误， 但是，如果我修改此方法并从同一个包中加载另一个 fxml 文件，它会加载得很好:这是我的 Main :
package application;
import java.io.IOException;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;
public class Main extends Application {
private Stage primaryStage;
private static BorderPane mainLayout;
@Override
public void start(Stage primaryStage) throws IOException {
this.primaryStage= primaryStage;
this.primaryStage.setTitle("LAU LABS");
showMainView();
}
private void showMainView() throws IOException{
FXMLLoader loader=new FXMLLoader();
loader.setLocation(Main.class.getResource("MainView.fxml"));
mainLayout=loader.load();
Scene scene=new Scene(mainLayout);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void showAdminLoginScene() {
FXMLLoader loader=new FXMLLoader();
loader.setLocation(Main.class.getResource("AdminLogin.fxml"));
BorderPane adminLogin;
try {
adminLogin = loader.load();
mainLayout.setCenter(adminLogin);
} catch (IOException e) {
e.printStackTrace();
}
}
public static void showAdminLoggedIn() {
FXMLLoader loader=new FXMLLoader();
loader.setLocation(Main.class.getResource("AdminLoggedIn.fxml"));
AnchorPane adminLoggedIn;
try {
adminLoggedIn = loader.load();
mainLayout.setCenter(adminLoggedIn);
} catch (IOException e) {
System.out.println("the error is in Main, ShowAdminLoggedIn");
}
}
public static void main(String[] args) {
launch(args);
}
}
这是我的 Controller 类:
package application;
import java.awt.Label;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.io.IOException;
import javafx.fxml.FXML;
public class AdminLoginController {
@FXML private TextField txtUsername;
@FXML private TextField txtPassword;
@FXML private Label lblStatus;
private Main main;
public void Login(ActionEvent event) {
if(txtUsername.getText().equals("user")&&
txtPassword.getText().equals("pass")){
main.showAdminLoggedIn();
}
else{
lblStatus.setText("Login Failed!");
}
}
}
这是我的 fxml:
<?xml version="1.0" encoding="UTF-8"?>
<?import com.gluonhq.charm.glisten.control.TextField?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.PasswordField?>
<?import javafx.scene.image.Image?>
<?import javafx.scene.image.ImageView?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.BorderPane?>
<?import javafx.scene.text.Text?>
<BorderPane xmlns="http://javafx.com/javafx/8.0.141" xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.AdminLoginController">
<center>
<AnchorPane prefHeight="300.0" prefWidth="300.0">
<children>
<TextField fx:id="txtUsername" layoutX="56.0" layoutY="79.0" prefHeight="26.0" prefWidth="189.0" />
<PasswordField fx:id="txtPassword" layoutX="56.0" layoutY="150.0" prefHeight="26.0" prefWidth="189.0" />
<Button layoutX="56.0" layoutY="227.0" mnemonicParsing="false" onAction="#Login" prefHeight="32.0" prefWidth="189.0" style="-fx-background-color: #004c3c;" text="Login" />
<Text fill="#004c3c" layoutX="56.0" layoutY="75.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Username" wrappingWidth="60.98307228088379" />
<Text fill="#004c3c" layoutX="56.0" layoutY="146.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Password" />
<Button layoutX="1.0" minWidth="52.0" mnemonicParsing="false" prefHeight="39.0" prefWidth="52.0" style="-fx-background-color: Transparent;" />
<ImageView fitHeight="35.0" fitWidth="200.0" layoutX="10.0" layoutY="14.0" pickOnBounds="true" preserveRatio="true">
<image>
<Image url="@BackButton.png" />
</image>
</ImageView>
<Label fx:id="lblStatus" layoutX="56.0" layoutY="202.0" prefHeight="16.0" prefWidth="189.0" style="-fx-text-fill: Red;" text="Status: " />
</children>
</AnchorPane>
</center>
</BorderPane>
它们都在同一个名为“application”的包中(fxml、 Controller 和 main)
这就是错误:
javafx.fxml.LoadException:
/C:/Users/Owner/Documents/UNI/programming/workspace/Lau/bin/application/AdminLogin.fxml
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)
at javafx.fxml.FXMLLoader.importClass(FXMLLoader.java:2848)
at javafx.fxml.FXMLLoader.processImport(FXMLLoader.java:2692)
at javafx.fxml.FXMLLoader.processProcessingInstruction(FXMLLoader.java:2661)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2517)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2409)
at application.Main.showAdminLoginScene(Main.java:39)
at application.MainViewController.goAdminLogin(MainViewController.java:8)
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$MethodHandler.invoke(FXMLLoader.java:1771)
at javafx.fxml.FXMLLoader$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$354(GlassViewEventHandler.java:417)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:416)
at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
at com.sun.glass.ui.View.notifyMouse(View.java:937)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: com.gluonhq.charm.glisten.control.TextField
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at javafx.fxml.FXMLLoader.loadTypeForPackage(FXMLLoader.java:2916)
at javafx.fxml.FXMLLoader.loadType(FXMLLoader.java:2905)
at javafx.fxml.FXMLLoader.importClass(FXMLLoader.java:2846)
... 65 more
最佳答案
您在 FXML 中使用了不正确的 TextField(我猜这不是故意的):
<?import com.gluonhq.charm.glisten.control.TextField?>
这导致:
Caused by: java.lang.ClassNotFoundException: com.gluonhq.charm.glisten.control.TextField
您可以将导入更改为...
<?import javafx.scene.control.TextField?>
使用内置的TextField。
关于java - 加载fxml时"javafx.fxml.LoadException"，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/47674767/