Netbeans不包含内置jar文件中的资源

Question

我有一些文本文件和几张我在代码中加载的图片。 当我在NetBeans中运行程序时它们工作正常，但是当我清理并构建项目时，生成的jar文件不会运行，并返回一个异常，表明文件没有被读取。

这是我加载文件的方式：

public static ArrayList<ArrayList<String>> readTextFile(String filePath){
        ArrayList<ArrayList<String>> data = new ArrayList();
        String line;
        BufferedReader br = null;
        try{
            //br = new BufferedReader(new FileReader(filePath)); 
            br = new BufferedReader(new InputStreamReader(ClassLoader.getSystemClassLoader().getResourceAsStream(filePath))); 
            while((line = br.readLine()) != null){
                ArrayList<String> temp = new ArrayList<>();
                Scanner scanner = new Scanner(line);
                scanner.useDelimiter(Pattern.compile(";"));
                while(scanner.hasNext()){
                    temp.add(scanner.next());
                }
                data.add(temp);
            }
        }catch (FileNotFoundException e){
        }catch (IOException e){
        }finally {
            try {
                if (br != null) {
                    br.close();
                }
            }catch (IOException e) {
            }
        }
        return data;
    }

这就是我调用方法的方式：

ArrayList<ArrayList<String>> loadedData = readTextFile("WeaponVendor.txt");

顺便说一句，我将所需文件添加到Project-＆gt; Properties-＆gt; Libraries中。

如果它有用，这是我在运行jar文件时得到的异常：

Exception in Application constructor
java.lang.reflect.InvocationTargetException
        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 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(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at sun.launcher.LauncherHelper$FXHelper.main(Unknown Source)
Caused by: java.lang.RuntimeException: Unable to construct Application instance: class trabalhoPoo.Game
        at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:907)
        at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$155(LauncherImpl.java:182)
        at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
        at java.lang.reflect.Constructor.newInstance(Unknown Source)
        at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$161(LauncherImpl.java:819)
        at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$175(PlatformImpl.java:326)
        at com.sun.javafx.application.PlatformImpl.lambda$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
Caused by: java.lang.NullPointerException
        at java.io.Reader.<init>(Unknown Source)
        at java.io.InputStreamReader.<init>(Unknown Source)
        at trabalhoPoo.util.fileManager.readTextFile(fileManager.java:35)
        at trabalhoPoo.GameData.loadWeaponVendor(GameData.java:126)
        at trabalhoPoo.GameData.<init>(GameData.java:42)
        at trabalhoPoo.Game.<init>(Game.java:47)
        ... 13 more
Exception running application trabalhoPoo.Game