java - 应用程序启动方法 java.lang.reflect.InvocationTargetException 在 sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 中的异常
问题描述
我无法在我的 fxml/java 代码中找到要修复的内容,这是整个错误:
498) 在 sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767) 引起:java.lang.RuntimeException: com.sun.javafx.application.LauncherImpl.launchApplication1 (LauncherImpl.java: 917) 在 com.sun.javafx.application.LauncherImpl.lambda$launchApplication$154(LauncherImpl.java:182) 在 java.lang.Thread.run(Thread.java:748) 引起:javafx.fxml.LoadException:没有控制器指定的。/Volumes/OSTIUM/Labs/CAPSTONE/IceCreamScene.fxml:23 在 javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2597) 在 javafx.fxml.FXMLLoader.access$100(FXMLLoader.java:103) 在 javafx.fxml。 FXMLLoader$Element.getControllerMethodHandle(FXMLLoader.java:557) 在 javafx.fxml.FXMLLoader$Element.processEventHandlerAttributes(FXMLLoader.java:
我一直在查看“RUN”和“Control”代码以尝试找到错误,但我没有找到任何东西。这些是“RUN”程序和“Control”的代码
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class IceCreamRUN extends Application
{
public void start (Stage stage ) throws Exception
{
Parent parent =
FXMLLoader.load(getClass().getResource("IceCreamScene.fxml"));
Scene scene = new Scene(parent);
stage.setTitle("Patino's Ice Cream Shop");
stage.setScene(scene);
stage.show();
}
public static void main(String [] args)
{
launch(args);
}
}
import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.scene.control.CheckBox;
import javafx.scene.control.RadioButton;
import javafx.scene.control.ToggleGroup;
import javafx.scene.control.Alert;
import javafx.scene.control.Alert.AlertType;
import java.io.*;
import java.util.Scanner;
public class IceCreamControl {
//declarations
@FXML
private RadioButton Vanilla;
@FXML
private ToggleGroup FlavorGroup;
@FXML
private RadioButton Choc;
@FXML
private RadioButton StrwBerry;
@FXML
private Button Save;
@FXML
private Button ReDo;
@FXML
private Button Calculate;
@FXML
private CheckBox Nuts;
@FXML
private CheckBox Cherries;
double creamcost = 0.0;
double extra = 0.0;
//processing
@FXML
void CalculateListener()
{
double sub, tax, total;
double taxRate = 0.06;
sub = VanillaListener() + ChocolateListener() +
StrawberryListener()
+ ExtraListener();
tax = sub * taxRate;
total = sub + tax;
Alert alert = new Alert (AlertType.INFORMATION);
alert.setHeaderText(String.format("Total: $ %.2f", total));
alert.setContentText(String.format("Order: $ %.2f\nTax: %.2f\n
Total: $ %.2f", sub, tax, total));
alert.setTitle("Your Order");
alert.showAndWait();
}
@FXML
double ExtraListener()
{
extra = 0.0;
if(Cherries.isSelected())
extra += 0.50;
if(Nuts.isSelected())
extra += 0.50;
return extra;
}
@FXML
void ReDoListener() throws IOException
{
String order;
creamcost = 0.0;
extra = 0.0;
Nuts.setSelected(false);
Cherries.setSelected(false);
Vanilla.setSelected(false);
Choc.setSelected(false);
StrwBerry.setSelected(false);
File file = new File ("IcecreamSave.txt");
Scanner inputFile = new Scanner (file);
while(inputFile.hasNext())
{
order = inputFile.nextLine();
if (order.charAt(0) == 'v')
{
Vanilla.setSelected(true);
creamcost = 2.25;
}
if (order.charAt(0) == 'c')
{
Choc.setSelected(true);
creamcost = 2.25;
}
if (order.charAt(0) == 's')
{
StrwBerry.setSelected(true);
creamcost = 2.25;
}
}
inputFile.close();
}
@FXML
void SaveListener() throws IOException
{
PrintWriter outputfile = new PrintWriter ("IcecreamSave.txt");
if(Vanilla.isSelected())
outputfile.println("vanilla");
if(Choc.isSelected())
outputfile.println("chocolate");
if(StrwBerry.isSelected())
outputfile.println("strawberry");
if (Nuts.isSelected())
outputfile.println("nuts");
if(Cherries.isSelected())
outputfile.println("cherry");
outputfile.close();
}
@FXML
double StrawberryListener()
{
if (StrwBerry.isSelected())
creamcost = 2.25;
else creamcost = 0.0;
return creamcost;
}
@FXML
double VanillaListener()
{
if (Vanilla.isSelected())
creamcost = 2.25;
else creamcost = 0.0;
return creamcost;
}
@FXML
double ChocolateListener()
{
if (Choc.isSelected())
creamcost = 2.25;
else creamcost = 0.0;
return creamcost;
}
}
我将非常感谢帮助找到错误。
更新:我修复了位置,但出现了新错误;
> Aug 15, 2018 1:28:21 PM javafx.fxml.FXMLLoader$ValueElement
processValue
WARNING: Loading FXML document with JavaFX API of version 10.0.1 by
JavaFX runtime of version 8.0.171
Exception in Application start method
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
com.sun.javafx.application.LauncherImpl.lambda$launchApplication$154(LauncherImpl.java:182) 在 java.lang 的 com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917) 的应用程序启动方法异常.Thread.run(Thread.java:748) 原因:javafx.fxml.LoadException:未指定控制器。/Volumes/OSTIUM/Labs/CAPSTONE/IceCreamScene.fxml:22
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2597)
at javafx.fxml.FXMLLoader.access$100(FXMLLoader.java:103)
at javafx.fxml.FXMLLoader$Element.getControllerMethodHandle(FXMLLoader.java:557)
at javafx.fxml.FXMLLoader$Element.processEventHandlerAttributes(FXMLLoader.java:599)
at javafx.fxml.FXMLLoader$ValueElement.processEndElement(FXMLLoader.java:770)
at javafx.fxml.FXMLLoader.processEndElement(FXMLLoader.java:2823)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2532)
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 IceCreamRUN.start(IceCreamRUN.java:11)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$161(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$174(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$172(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$173(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
异常运行应用程序 IceCreamRUN
解决方案
原因在于根本原因异常。它找不到IceCreamScene.fxml
. 检查文件是否存在于正确的位置。
您的应用正在此路径中查找它:
/Volumes/OSTIUM/Labs/CAPSTONE/IceCreamScene.fxml
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