java应用程序启动方法中出现异常。朗，反思一下。对太阳的攻击。反映NativeMethodAccessorImpl。invoke0（本机方法）

Question

我很难在fxml/java代码中找到要修复的内容，这就是全部错误：

java.lang.reflect.InvocationTargetExctive atsun.reflect.NativemetodAccessorImpl.invoke0（本机方法）atsun.reflect.NativemetodAccessorImpl.invoke（NativemetodAccessorImpl.java:62）atsun.reflect.在java.lang.reflect.Method.invoke（Method.java:498）atcom.sun.javafx.application.LauncherImpl.launchApplication with Args（LauncherImpl.java:389）atcom.sun.javafx.application.LauncherImpl.launchApplication（LauncherImpl.java:328）atsun.reflect.NativemetodAccessorImpl.invoke0（本机方法）at sun. reect。委托在java. lang. refect。在sun. Launcher。LauncherHelper$FXHelper. main（LauncherHelper. java： 767）造成的。运行异常：在com. sun. javafx. Application的应用程序启动方法中的异常。LauncherInp. java： 917）在com. sun. javafx. Application。LauncherInp. lambda$启动应用程序154美元（LauncherInp. java： 182）在java. lang。线程. run（线程. java： 748）造成的。负载异常：未指定控制器。 /Volumes/OSTIUM/Labs/CAPSTONE/IceCreamScene.fxml： 23在javafx. fxml。FXMLLoader.构造负载异常（FXMLLoader. java： 2597FXMLLoader. 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。LauncherInp. lambda$LaunchApplication 1161美元（LauncherInp. java： 863）at com. sun. javafx. Application。Platform Inp. lambda$runAndWait174美元（PlatformInp. java： 326）at com. sun. javafx. Application。Platform Inp. lambda$null172美元（PlatformInp. java： 295）at java. securite。AccessllControler. doPrivileged（本机方法）at

我一直在查看“运行”和“控制”代码，试图找出错误，但我什么也没发现。这些是“运行”程序和“控制”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;
   }

}

如果能帮我找到错误，我将不胜感激。

更新：我修复了位置，但有一个新的错误；

 > 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 

sun.reflect.NativeMETodAccessorImpl.invoke（NativeMETodAccessorImpl.java： 62）在sun.reflect.在java.lang.reflect.Method.invoke（Method.java:498）在com.sun.javafx.application.LauncherImpl.launchApplication with Args（LauncherImpl.java:389）在com.sun.javafx.application.LauncherImpl.launchApplication（LauncherImpl.java:328）在sun.reflect.NativeMETodAccessorImpl.invoke0（本机方法）在sun.reflect.NativeMETodAccessorImpl.invoke（NativeMETodAccessorImpl.java:62）在sun。在sun. Launcher. LauncherHelper$FXHelper. main（LauncherHelper. java： 767）引起的：java. lang。运行时异常：在com. sun. javafx. Application的应用程序启动方法中的异常。LauncherInpl。启动应用程序1（LauncherInpl. java： 917）在com. sun. javafx. Application。LauncherInpl. lambda$启动应用程序154美元（LauncherInpl. java： 182）在java. lang。线程运行（线程. java： 748）引起的：javafx. fxml。负载异常：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

Answer 1

原因在于根本原因异常。它找不到冰淇淋场景。fxml。检查文件是否存在于正确的位置。

你的应用程序正在以下路径中寻找它：/Volumes/OSTIUM/Labs/CAPSTONE/IceCreamScene。fxml