Java EOFException问题ObjectInputStream

我正在尝试使用与HashMap成功的方法类似的方法实现“帐户”列表的加载/保存 .

Background:

private List<Account> accounts;

public AccountManager() {
    try {
        accounts = LoadSave.loadAccounts();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

在这里，我想设置我的帐户列表以包含已保存的帐户 .

Load/Save Implementation:

public static void saveAccounts(List<Account> accounts) throws IOException {
    try {
        FileOutputStream fos = new FileOutputStream("accounts.ser");
        ObjectOutputStream oos = new ObjectOutputStream(fos);
        oos.writeObject(accounts);
        oos.close();
        fos.close();
        System.out.printf("Saved account.");
    }
    catch(IOException ioe) {
        ioe.printStackTrace();
    }
}

public static List<Account> loadAccounts() throws IOException {
    List<Account> accounts = null;
    try {
        FileInputStream fis = new FileInputStream("accounts.ser");
        ObjectInputStream ois = new ObjectInputStream(fis);
        accounts = (List<Account>) ois.readObject();
        ois.close();
        fis.close();
    }
    catch(IOException ioe) {
        ioe.printStackTrace();
    }
    catch(ClassNotFoundException c) {
        System.out.println("Class not found");
        c.printStackTrace();
    }

    return accounts;
}

The problem 是我第一次初始化AccountManager时，accounts.ser文件没有保存的帐户，因为该功能是在以后的方法中实现的，因此我得到了以下异常：

java.io.EOFException的在java.io.ObjectInputStream中$ PeekInputStream.readFully（ObjectInputStream.java:2681）在java.io.ObjectInputStream中$ BlockDataInputStream.readShort（ObjectInputStream.java:3156）在java.io.ObjectInputStream.readStreamHeader（ObjectInputStream的.java：862）java.io.ObjectInputStream . （ObjectInputStream.java:358）atatatatons.inventory_model.LoadSave.loadAccounts（LoadSave.java:69）at billing.AccountManager . （AccountManager.java:81）at sun.reflect位于sun.reflect.DelegatingConstructorAccessorImpl.newInstance（DelegatingConstructorAccessorImpl.java:45）的sun.reflect.NativeConstructorAccessorImpl.newInstance（NativeConstructorAccessorImpl.java:62）中的.NativeConstructorAccessorImpl.newInstance0（Native Method）at java.lang.reflect.Constructor.newInstance（Constructor） .java：423）at java.lang.Class.newInstance（Class.java:442）at sun.reflect.misc.ReflectUtil.newInstance（ReflectUtil.java:51）at javafx.fxml.FXMLLoader $ ValueElement.processAttribute（FXMLLoader . java：927）at javafx.fxml.FXM javafx.fxml.fXMLLoader上的LLoader $ InstanceDeclarationElement.processAttribute（FXMLLoader.java:971）javafx.fxml.fxml.FXML上的javafx.fxml.FXMLLoader $ ValueElement.processStartElement（FXMLLoader.java:744）中的$ Element.processStartElement（FXMLLoader.java:240） .FXMLLoader.processStartElement（FXMLLoader.java:2707）在javafx.fxml.FXMLLoader.loadImpl（FXMLLoader.java:2527）在javafx.fxml.FXMLLoader.loadImpl（FXMLLoader.java:2441）在javafx.fxml.FXMLLoader.load（ FXMLLoader.java:2409）at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method）at sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62）at sunat . .reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43），位于sun.reflect.misc.Trampoline.invoke（MethodUtil.java:71）的java.lang.reflect.Method.invoke（Method.java:498） . sun.reflect.DelegatingMethodAccess中的reflect.GeneratedMethodAccessor3.invoke（未知来源） orImpl.invoke（DelegatingMethodAccessorImpl.java:43）at java.lang.reflect.Method.invoke（Method.java:498）at sun.reflect.misc.MethodUtil.invoke（MethodUtil.java:275）at javafx.fxml.FXMLLoader $ MethodHandler.invoke（FXMLLoader.java:1771）在javafx.fxml.FXMLLoader $ ControllerMethodEventHandler.handle（FXMLLoader.java:1657）在com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent（CompositeEventHandler.java:86）在COM . com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent（EventHandlerManager.java:191）中的sun.javafx.event.EventHandlerManager.dispatchBubblingEvent（EventHandlerManager.java:238）位于com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent（CompositeEventDispatcher . java：59）com.sun.javafx.event.BasicEventDispatcher.dispatchEvent（BasicEventDispatcher.java:58）at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent（EventDispatchChainImpl.java:114）at com.sun.javafx.event com.sun.javaf上的.BasicEventDispatcher.dispatchEvent（BasicEventDispatcher.java:56） x.event.EventDispatchChainImpl.dispatchEvent（EventDispatchChainImpl.java:114）在com.sun.javafx.event.BasicEventDispatcher.dispatchEvent（BasicEventDispatcher.java:56）在com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent（EventDispatchChainImpl.java： 114）在com.sun.javafx.event.BasicEventDispatcher.dispatchEvent（BasicEventDispatcher.java:56）在com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent（EventDispatchChainImpl.java:114）在com.sun.javafx.event.BasicEventDispatcher com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent（EventDispatchChainImpl.java:114）中的.dispatchEvent（BasicEventDispatcher.java:56）位于com的com.sun.javafx.event.EventUtil.fireEventImpl（EventUtil.java:74） . sun.javafx.event.EventUtil.fireEvent（EventUtil.java:49）at javafx.event.Event.fireEvent（Event.java:198）at javafx.scene.Node.fireEvent（Node.java:8411）at javafx.scene .control.Button.fire（Button.java:185）at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased（ButtonBehavior.java:182） at com.sun.javafx.scene.control.skin.BehaviorSkinBase $ 1.handle（BehaviorSkinBase.java:96）at com.sun.javafx.scene.control.skin.BehaviorSkinBase $ 1.handle（BehaviorSkinBase.java:89）at com位于com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent（CompositeEventHandler.java:80）的com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent中的.sun.javafx.event.CompositeEventHandler $ NormalEventHandlerRecord.handleBubblingEvent（CompositeEventHandler.java:218） （EventHandlerManager.java:238）在com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent（EventHandlerManager.java:191）在com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent（CompositeEventDispatcher.java:59）在com.sun.javafx.event.BasicEventDispatcher.dispatchEvent （BasicEventDispatcher.java:58）在com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent（EventDispatchChainImpl.java:114）在com.sun.javafx.event.BasicEventDispatcher.dispatchEvent（BasicEventDispatcher.java:56）在的com.sun . javafx.event.EventDispatchChainImpl.dispatchEvent（EventDispatchChainImpl.java:114）在com.sun.javafx.event.BasicEventDispatcher.dispatchEvent（BasicEventDispatcher.java:56）在com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent（EventDispatchChainImpl.java： 114）在com.sun.javafx.event.BasicEventDispatcher.dispatchEvent（BasicEventDispatcher.java:56）在com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent（EventDispatchChainImpl.java:114）在com.sun.javafx.event.BasicEventDispatcher .dispatchEvent（BasicEve ntDispatcher.java:56）在com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent（EventDispatchChainImpl.java:114）在com.sun.javafx.event.EventUtil.fireEventImpl（EventUtil.java:74）在com.sun.javafx位于javafx.scene的javafx.sventne.Scene $ MouseHandler.process（Scene.java:3757）的javafx.event.Event.fireEvent（Event.java:198）上的.event.EventUtil.fireEvent（EventUtil.java:54） . 场景$ MouseHandler.access $ 1500（Scene.java:3485）在javafx.scene.cempl.processMouseEvent（Scene.java:1762）的javafx.scene.Scene $ ScenePeerListener.mouseEvent（Scene.java:2494）at com.sun . javafx.tk.quantum.GlassViewEventHandler $ MouseEventNotification.run（GlassViewEventHandler.java:394）在com.sun.javafx.tk.quantum.GlassViewEventHandler $ MouseEventNotification.run（GlassViewEventHandler.java:295）在java.security.AccessController.doPrivileged（本地方法）at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda $ handleMouseEvent $ 353（GlassViewEventHandler.java:432）at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRende rLock（QuantumToolkit.java:389）at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent（GlassViewEventHandler.java:431）at com.sun.glass.ui.View.handleMouseEvent（View.java:555）at com .sun.glass.ui.View.notifyMouse（View.java:937）at com.sun.glass.ui.win.WinApplication._runLoop（Native Method）at com.sun.glass.ui.win.WinApplication.lambda $ $ java（WinApplication.java:177）在java.lang.Thread.run（Thread.java:748）

我已经尝试将帐户设置为被捕获的EOFExceptions上的新ArrayList，但它仍然会抛出EOFException . 我希望能够在每次打开帐户管理器窗口时加载帐户，因此我需要能够在构造函数中加载帐户 .