从 JAR 文件中读取/写入文件

Question

我已经完成了一些我正在开发的游戏，但是当用户想要保存和加载他以前的任何游戏时，当我需要保存/写入时，它在 netbeans 中运行时运行良好，但是当我从netbeans生成的JAR运行它只有在应用程序永远不会关闭时才有效，我的意思是，它在关闭时会丢失所有数据，我猜是因为它没有写入或加载文件我得到这个错误时从控制台运行它。该 txt 文件中只有一个 ArrayList，其中包含每个用户的信息，它对 Records 文件也是如此，它只存储游戏的前 10 名玩家。

    java.io.FileNotFoundException: saveFiles\Users\Usuarios.txt (The system cannot find the path specified)
    at java.io.FileOutputStream.open0(Native Method)
    at java.io.FileOutputStream.open(Unknown Source)
    at java.io.FileOutputStream.<init>(Unknown Source)
    at java.io.FileOutputStream.<init>(Unknown Source)
    at SaveNLoad.SaveUsers.saveUsers(SaveUsers.java:26)
    at CrossyMain.MainMenu$ButtonListening.actionPerformed(MainMenu.java:309)
    at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
    at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
    at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
    at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
    at java.awt.Component.processMouseEvent(Unknown Source)
    at javax.swing.JComponent.processMouseEvent(Unknown Source)
    at java.awt.Component.processEvent(Unknown Source)
    at java.awt.Container.processEvent(Unknown Source)
    at java.awt.Component.dispatchEventImpl(Unknown Source)
    at java.awt.Container.dispatchEventImpl(Unknown Source)
    at java.awt.Component.dispatchEvent(Unknown Source)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
    at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
    at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
    at java.awt.Container.dispatchEventImpl(Unknown Source)
    at java.awt.Window.dispatchEventImpl(Unknown Source)
    at java.awt.Component.dispatchEvent(Unknown Source)
    at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
    at java.awt.EventQueue.access$500(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue$4.run(Unknown Source)
    at java.awt.EventQueue$4.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue.dispatchEvent(Unknown Source)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.run(Unknown Source)

这是因为路径问题吗？在 netbeans 中，从那里加载它时路径似乎是绝对路径，但是我认为从 JAR 文件加载它时不一样，任何建议都将不胜感激！

以下是管理用户文件写入/读取操作的方法

    public static void saveUsers (ArrayList<User> usersToSave){

    try {                       //Used to Save Users

        File path = new File("saveFiles/Users/Usuarios.txt");
        System.out.println(path.getAbsolutePath());
        FileOutputStream writeUsers = new FileOutputStream(path);
        ObjectOutputStream userStream = new ObjectOutputStream(writeUsers);

        userStream.writeObject(usersToSave);

        userStream.close();

    } catch (IOException ex) {
        Logger.getLogger(SaveUsers.class.getName()).log(Level.SEVERE, null, ex);
    }

    } 

    public static void loadUsers (){

    try {

        File path = new File("saveFiles/Users/Usuarios.txt");
        System.out.println(path.getAbsolutePath());
        FileInputStream readUsers = new FileInputStream(path);
        ObjectInputStream userStream = new ObjectInputStream(readUsers);

        ArrayList<User> loaded = (ArrayList<User>) userStream.readObject();

        User.setUsers(loaded);

        userStream.close();

    } catch (IOException | ClassNotFoundException ex) {
        System.out.println("File Not Created");
    }

    }

Records 文件的读/写操作（注意 sort() 只是一个使用比较器对 ArrayList 进行排序的函数）

private static final String RECORDSFILE = "saveFiles/Records/Records.txt";

public static void loadScoreFile() {

    try{
        inputStream = new ObjectInputStream(new FileInputStream(RECORDSFILE));
        scores = (ArrayList<Score>) inputStream.readObject();   
        sort();
        inputStream.close();
    } catch (IOException | ClassNotFoundException e) {

    } 

}

public void updateScoreFile() {

    try {
        outputStream = new ObjectOutputStream(new FileOutputStream(RECORDSFILE));
        sort();
        outputStream.writeObject(scores);
        outputStream.close();
    } catch (IOException e) {

    }

}    

同样，它在 netbeans 中运行良好，但在 JAR 文件中无法运行，如果你们需要我已经发布的更多代码，请让我知道！但这些是处理 2 个文件记录和用户的输入/输出操作的函数！任何建议将不胜感激！

Answer 1

它在 Netbeans 中有效，因为它不使用 JAR 文件，而是使用文件系统。

您不能写入正在运行的 JAR 文件中的文件。重新考虑您的要求。