无法 运行 作为应用程序启动方法中的异常
Not able to run as Exception in Application start method
我正在使用 Netbeans IDE 并使用 Scene Builder 2.0 创建该文件。我使用 Scene Builder 创建了所有用户界面。
当我尝试运行 应用程序时出现此异常。我在 Netbeans IDE 中创建了 JavaFX FXML 应用程序，并在场景生成器中打开了 fxml 并在完成后 运行 在 Netbeans 中进行了编辑，但未能获得所需的屏幕。
错误：
Executing C:\J_Progs\Login\dist\run1115386562\Login.jar using platform C:\Program Files\Java\jdk1.8.0_66\jre/bin/java
Exception in Application start method
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:497)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
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:497)
at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication5(LauncherImpl.java:182)
at java.lang.Thread.run(Thread.java:745)
Caused by: javafx.fxml.LoadException:
file:/C:/J_Progs/Login/dist/run1115386562/Login.jar!/login/Login.fxml:35
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2579)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3214)
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 login.Login.start(Login.java:23)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication12(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait5(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null3(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater4(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null8(WinApplication.java:191)
... 1 more
Caused by: java.lang.IllegalArgumentException: Can not set javafx.scene.control.Label field login.LoginController.txtUser to javafx.scene.control.TextField
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167)
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171)
at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:81)
at java.lang.reflect.Field.set(Field.java:764)
at javafx.fxml.FXMLLoader.injectFields(FXMLLoader.java:1163)
at javafx.fxml.FXMLLoader.access00(FXMLLoader.java:103)
at javafx.fxml.FXMLLoader$ValueElement.processValue(FXMLLoader.java:857)
at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:751)
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2707)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2527)
... 17 more
Exception running application login.Login
Login.fxml:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.paint.*?>
<?import javafx.scene.shape.*?>
<?import javafx.scene.effect.*?>
<?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="600.0" prefWidth="650.0" style="-fx-background-color: #DCDCDC;" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="login.LoginController">
<children>
<Label fx:id="lblMsg" layoutX="47.0" layoutY="39.0" text="WELCOME" textAlignment="CENTER">
<font>
<Font name="System Bold" size="40.0" />
</font>
</Label>
<Label layoutX="271.0" layoutY="229.0" text="SIGN IN">
<font>
<Font name="System Bold" size="24.0" />
</font>
</Label>
<Label layoutX="130.0" layoutY="300.0" text="USERNAME">
<font>
<Font size="15.0" />
</font>
</Label>
<Label layoutX="129.0" layoutY="379.0" text="PASSWORD">
<font>
<Font size="15.0" />
</font>
</Label>
<TextField fx:id="txtUser" layoutX="265.0" layoutY="298.0" prefHeight="25.0" prefWidth="235.0" promptText="Enter Username" />
<Button layoutX="289.0" layoutY="481.0" mnemonicParsing="false" onAction="#loginAction" opacity="0.84" style="-fx-background-color: #1e90ff;" text="SIGN IN" textFill="WHITE">
<font>
<Font size="15.0" />
</font>
</Button>
<PasswordField fx:id="txtPass" layoutX="265.0" layoutY="377.0" prefHeight="25.0" prefWidth="235.0" promptText="Enter Password" />
<Rectangle arcHeight="18.0" arcWidth="18.0" fill="SILVER" height="174.0" layoutX="83.0" layoutY="264.0" opacity="0.41" stroke="BLACK" strokeType="INSIDE" width="506.0" />
<Rectangle arcHeight="12.0" arcWidth="12.0" fill="DODGERBLUE" height="35.0" layoutX="86.0" layoutY="229.0" opacity="0.67" stroke="BLACK" strokeType="INSIDE" width="500.0" />
</children>
</AnchorPane>
LoginController.java:
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package login;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Label;
public class LoginController implements Initializable {
@FXML
private Label lblMsg;
@FXML
private Label txtUser;
@FXML
private Label txtPass;
@FXML
private void loginAction(ActionEvent event) {
if(txtUser.getText().equals("rs954") && txtPass.getText().equals("admin"))
{
lblMsg.setText("WELCOME");
}
else
{
lblMsg.setText("WRONG CREDENTIALS");
}
}
@Override
public void initialize(URL location, ResourceBundle resources) {
throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}
}
Login.java:
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package login;
import java.io.IOException;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class Login extends Application {
@Override
public void start(Stage primaryStage) throws IOException {
Parent root = FXMLLoader.load(getClass().getResource("Login.fxml"));
primaryStage.setScene(new Scene(root));
primaryStage.show();
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
}
}
新错误：
Executing C:\J_Progs\Login\dist\run384200010\Login.jar using platform C:\Program Files\Java\jdk1.8.0_66\jre/bin/java
Exception in Application start method
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:497)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
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:497)
at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication5(LauncherImpl.java:182)
at java.lang.Thread.run(Thread.java:745)
Caused by: javafx.fxml.LoadException:
file:/C:/J_Progs/Login/dist/run384200010/Login.jar!/login/Login.fxml
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2579)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3214)
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 login.Login.start(Login.java:23)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication12(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait5(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null3(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater4(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null8(WinApplication.java:191)
... 1 more
Caused by: java.lang.UnsupportedOperationException: Not supported yet.
at login.LoginController.initialize(LoginController.java:44)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2548)
... 17 more
Exception running application login.Login
新编辑 LoginController.java
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package login;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
public class LoginController implements Initializable {
@FXML
private Label lblMsg = new Label();
@FXML
private TextField txtUser = new TextField ();
@FXML
private TextField txtPass = new TextField ();
@FXML
private void loginAction(ActionEvent event) {
if(txtUser.getText().equals("rs95 4") && txtPass.getText().equals("admin"))
{
lblMsg.setText("WELCOME");
}
else
{
lblMsg.setText("WRONG CREDENTIALS");
}
}
@Override
public void initialize(URL location, ResourceBundle resources) {
throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}
}
您的 fxml 文件中的 txuser 是一个文本字段：<TextField fx:id="txtUser"，在您的应用程序中是一个标签 private Label txtUser。您应该在两者中使用相同的小部件。
我正在使用 Netbeans IDE 并使用 Scene Builder 2.0 创建该文件。我使用 Scene Builder 创建了所有用户界面。
当我尝试运行 应用程序时出现此异常。我在 Netbeans IDE 中创建了 JavaFX FXML 应用程序，并在场景生成器中打开了 fxml 并在完成后 运行 在 Netbeans 中进行了编辑，但未能获得所需的屏幕。
错误：
Executing C:\J_Progs\Login\dist\run1115386562\Login.jar using platform C:\Program Files\Java\jdk1.8.0_66\jre/bin/java
Exception in Application start method
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:497)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
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:497)
at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication5(LauncherImpl.java:182)
at java.lang.Thread.run(Thread.java:745)
Caused by: javafx.fxml.LoadException:
file:/C:/J_Progs/Login/dist/run1115386562/Login.jar!/login/Login.fxml:35
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2579)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3214)
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 login.Login.start(Login.java:23)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication12(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait5(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null3(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater4(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null8(WinApplication.java:191)
... 1 more
Caused by: java.lang.IllegalArgumentException: Can not set javafx.scene.control.Label field login.LoginController.txtUser to javafx.scene.control.TextField
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167)
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171)
at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:81)
at java.lang.reflect.Field.set(Field.java:764)
at javafx.fxml.FXMLLoader.injectFields(FXMLLoader.java:1163)
at javafx.fxml.FXMLLoader.access00(FXMLLoader.java:103)
at javafx.fxml.FXMLLoader$ValueElement.processValue(FXMLLoader.java:857)
at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:751)
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2707)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2527)
... 17 more
Exception running application login.Login
Login.fxml:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.paint.*?>
<?import javafx.scene.shape.*?>
<?import javafx.scene.effect.*?>
<?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="600.0" prefWidth="650.0" style="-fx-background-color: #DCDCDC;" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="login.LoginController">
<children>
<Label fx:id="lblMsg" layoutX="47.0" layoutY="39.0" text="WELCOME" textAlignment="CENTER">
<font>
<Font name="System Bold" size="40.0" />
</font>
</Label>
<Label layoutX="271.0" layoutY="229.0" text="SIGN IN">
<font>
<Font name="System Bold" size="24.0" />
</font>
</Label>
<Label layoutX="130.0" layoutY="300.0" text="USERNAME">
<font>
<Font size="15.0" />
</font>
</Label>
<Label layoutX="129.0" layoutY="379.0" text="PASSWORD">
<font>
<Font size="15.0" />
</font>
</Label>
<TextField fx:id="txtUser" layoutX="265.0" layoutY="298.0" prefHeight="25.0" prefWidth="235.0" promptText="Enter Username" />
<Button layoutX="289.0" layoutY="481.0" mnemonicParsing="false" onAction="#loginAction" opacity="0.84" style="-fx-background-color: #1e90ff;" text="SIGN IN" textFill="WHITE">
<font>
<Font size="15.0" />
</font>
</Button>
<PasswordField fx:id="txtPass" layoutX="265.0" layoutY="377.0" prefHeight="25.0" prefWidth="235.0" promptText="Enter Password" />
<Rectangle arcHeight="18.0" arcWidth="18.0" fill="SILVER" height="174.0" layoutX="83.0" layoutY="264.0" opacity="0.41" stroke="BLACK" strokeType="INSIDE" width="506.0" />
<Rectangle arcHeight="12.0" arcWidth="12.0" fill="DODGERBLUE" height="35.0" layoutX="86.0" layoutY="229.0" opacity="0.67" stroke="BLACK" strokeType="INSIDE" width="500.0" />
</children>
</AnchorPane>
LoginController.java:
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package login;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Label;
public class LoginController implements Initializable {
@FXML
private Label lblMsg;
@FXML
private Label txtUser;
@FXML
private Label txtPass;
@FXML
private void loginAction(ActionEvent event) {
if(txtUser.getText().equals("rs954") && txtPass.getText().equals("admin"))
{
lblMsg.setText("WELCOME");
}
else
{
lblMsg.setText("WRONG CREDENTIALS");
}
}
@Override
public void initialize(URL location, ResourceBundle resources) {
throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}
}
Login.java:
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package login;
import java.io.IOException;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class Login extends Application {
@Override
public void start(Stage primaryStage) throws IOException {
Parent root = FXMLLoader.load(getClass().getResource("Login.fxml"));
primaryStage.setScene(new Scene(root));
primaryStage.show();
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
}
}
新错误：
Executing C:\J_Progs\Login\dist\run384200010\Login.jar using platform C:\Program Files\Java\jdk1.8.0_66\jre/bin/java
Exception in Application start method
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:497)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
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:497)
at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication5(LauncherImpl.java:182)
at java.lang.Thread.run(Thread.java:745)
Caused by: javafx.fxml.LoadException:
file:/C:/J_Progs/Login/dist/run384200010/Login.jar!/login/Login.fxml
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2579)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3214)
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 login.Login.start(Login.java:23)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication12(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait5(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null3(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater4(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null8(WinApplication.java:191)
... 1 more
Caused by: java.lang.UnsupportedOperationException: Not supported yet.
at login.LoginController.initialize(LoginController.java:44)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2548)
... 17 more
Exception running application login.Login
新编辑 LoginController.java
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package login;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
public class LoginController implements Initializable {
@FXML
private Label lblMsg = new Label();
@FXML
private TextField txtUser = new TextField ();
@FXML
private TextField txtPass = new TextField ();
@FXML
private void loginAction(ActionEvent event) {
if(txtUser.getText().equals("rs95 4") && txtPass.getText().equals("admin"))
{
lblMsg.setText("WELCOME");
}
else
{
lblMsg.setText("WRONG CREDENTIALS");
}
}
@Override
public void initialize(URL location, ResourceBundle resources) {
throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}
}
您的 fxml 文件中的 txuser 是一个文本字段：<TextField fx:id="txtUser"，在您的应用程序中是一个标签 private Label txtUser。您应该在两者中使用相同的小部件。