标签: notserializableexception

我使用 Flask 作为我服务器的框架，在返回响应时出现以下错误：

> Traceback (most recent call last):
  File "C:\Python27\lib\site-packages\flask\app.py", line 1612, in full_dispatch_request
    rv = self.dispatch_request()
  File "C:\Python27\lib\site-packages\flask\app.py", line 1598, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "C:\Python27\lib\site-packages\flask_restful\__init__.py", line 480, in wrapper
    resp = resource(*args, **kwargs)
  File "C:\Python27\lib\site-packages\flask\views.py", line 84, in view
    return self.dispatch_request(*args, **kwargs)
  File "C:\Python27\lib\site-packages\flask_restful\__init__.py", line 595, in dispatch_request
    resp = meth(*args, **kwargs)
  File "rest.py", line 27, in get
    return jsonify(**solution)
  File "C:\Python27\lib\site-packages\flask\json.py", line 263, in jsonify
    (dumps(data, indent=indent, separators=separators), '\n'),
  File "C:\Python27\lib\site-packages\flask\json.py", line 123, in dumps
    rv …

我正在使用Javafx,并将我的对象包装到ListProperty中,以使tableview更新列表对象的任何更改.现在我正在尝试序列化我的项目和ListProperty对象,它给我带来了这个异常.

java.io.NotSerializableException: javafx.beans.property.SimpleListProperty
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1181)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1541)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1506)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1429)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1175)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:347)
at Util.FileManager.serializeProject(FileManager.java:23)
at Controller.FrameworkController.saveProject(FrameworkController.java:549)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:75)
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:279)
at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1435)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:69)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:217)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:170)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:37)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:53)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:28)
at javafx.event.Event.fireEvent(Event.java:171)
at javafx.scene.control.MenuItem.fire(MenuItem.java:456)
at com.sun.javafx.scene.control.skin.ContextMenuContent$MenuItemContainer.doSelect(ContextMenuContent.java:1197)
at com.sun.javafx.scene.control.skin.ContextMenuContent$MenuItemContainer$6.handle(ContextMenuContent.java:1148)
at com.sun.javafx.scene.control.skin.ContextMenuContent$MenuItemContainer$6.handle(ContextMenuContent.java:1146)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:69)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:217)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:170)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:38)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:37)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:35)
at …

如果我@ViewScoped在JSF中使用,则会发生以下异常:

java.io.NotSerializableException: com.solv.basics.Basics
    java.io.ObjectOutputStream.writeObject0(Unknown Source)
    java.io.ObjectOutputStream.writeObject(Unknown Source)
    java.util.HashMap.writeObject(Unknown Source)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    java.lang.reflect.Method.invoke(Unknown Source)
    java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)
    java.io.ObjectOutputStream.writeSerialData(Unknown Source)
    java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

我可以通过让bean实现来解决它Serializable.但是,我不理解这个推理.为什么仅对视图范围而不是其他范围发生此异常？

所以我试图通过意图将一个我创建的类的实例传递给一个新的活动.

public class Room implements Serializable{

    /**
     * 
     */
    private static final long serialVersionUID = 6857044522819206055L;


    int roomID;

    String roomName;

    ArrayList<MarkerHolder> markerHolders = new ArrayList<MarkerHolder>();


    public int getRoomID() {
        return roomID;
    }
    public void setRoomID(int roomID) {
        this.roomID = roomID;
    }

    public String getRoomName() {
        return roomName;
    }
    public void setRoomName(String roomName) {
        this.roomName = roomName;
    }       

    public ArrayList<MarkerHolder> getMarkerHolders() {
        return markerHolders;
    }
    public void setMarkerHolders(ArrayList<MarkerHolder> markerHolders) {
        this.markerHolders = markerHolders;
    }       
}

public class MarkerHolder implements Serializable{
    /** …

这是即将被序列化为字节数组的类.

public class DummyClass implements Serializable
{
    private static transient final long serialVersionUID    = -8483859843874771619L;
    public String   y;

    public DummyClass(String y)
    {
        this.y = y;
    }
    public String getY()
    {
        return this.y;
    }
}

这是序列化执行测试

    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    ObjectOutput out = null;
    byte[] bs = null;
    try
    {
        DummyClass dummyClass = new DummyClass("World I Salute you");
        out = new ObjectOutputStream(bos);
        out.writeObject(dummyClass); // <--- Throws exception here
        bs = bos.toByteArray();
    }
    finally
    {
        out.close();
        bos.close();
    }

并关于堆栈跟踪:

java.io.NotSerializableException: tests.DummyClassTest …

class NotSerializable {}

class MyClass implements Serializable {
   private NotSerializable field; // class NotSerializable does not implement Serializable!!
}

public class Runner {
   public static void main(String[] args) {
      MyClass ob = new MyClass();

      try {
         FileOutputStream fs = new FileOutputStream("testSer.ser");
         ObjectOutputStream os = new ObjectOutputStream(fs);
         os.writeObject(ob);
         os.close();
      } catch (IOException e) { 
          e.printStackTrace(); 
      }

      try {
         FileInputStream fis = new FileInputStream("testSer.ser");
         ObjectInputStream ois = new ObjectInputStream(fis);
         MyClass copyOb = (MyClass) ois.readObject();
         ois.close();
      } catch (Exception e) { 
          e.printStackTrace(); 
      } …

我有一个相当大的项目(大学的OOP课程):一个学校注册,学生可以看到他们的成绩,教师可以增加成绩等等.

"base"类是一个包含所有使用的类(Java)的单例,例如用户数组,类(如在学校类中)和将classess和教师关联到课程的TreeMap.

我想序列化这个基类(Central),以便保存修改后的数据.问题是我得到了这个例外

java.io.NotSerializableException: liceu.Central$1
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1183)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1547)
at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:440)
at java.util.TreeMap.writeObject(TreeMap.java:2265)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:988)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1495)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1431)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1177)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1547)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1508)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1431)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1177)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:347)
at liceu.Main.main(Main.java:31)

我的所有类都实现了Serializable,它们没有瞬态或静态字段(单例除外,它具有实例变量和getInstance方法作为静态).

因为发布会有很多代码(我会冒着通过在提交之前发布它来使我的作业无效),我试图通过尝试隔离错误来进行概念验证.

public class Central implements Serializable
{
    private ArrayList <User> users;
    private ArrayList <Class> classess;
    private TreeMap <Course, TreeMap <Class, Professor>> reunite;
    private static Central instance = null;

    private Central()
    {
        users = new ArrayList<>();
        classess = …

我不断收到此可序列化错误。我的两个班级都实现了它。我似乎找不到问题。我已经完成了所有课程，但仍然找不到原因。它仅发生在较旧的 Android 版本、2.3 及更低版本上。似乎可以在 4.0+ 上使用 find 吗？

更新

是的，这个问题又回到了我身边。

这次我得到

java.lang.RuntimeException：Parcelable 遇到 IOException 写入可序列化对象（名称 = ....datastructs.model.PortfolioAccount）

PorfolioAccount 包含所有 GSON 对象和变量。

以及由此造成的

Caused by: java.io.NotSerializableException: android.os.Handler

我已经检查了所有需要可序列化的类，但仍然找不到任何东西。和以前一样，它只发生在旧的 Android 操作系统版本上。

我正在尝试PWlist从.dat文件中读取一个对象数组(称为)ObjectInputStream.该数组包含两个不同的对象,LongPW和PinPW.当我尝试执行读取时,我收到此异常...

java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: PinPW
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1332)
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1666)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1322)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350)
at Handler.fromFile(Handler.java:99)
at Window$ButtonListener.actionPerformed(Window.java:104)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
at java.awt.Component.processMouseEvent(Component.java:6375)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
at java.awt.Component.processEvent(Component.java:6140)
at java.awt.Container.processEvent(Container.java:2083)
at java.awt.Component.dispatchEventImpl(Component.java:4737)
at java.awt.Container.dispatchEventImpl(Container.java:2141)
at java.awt.Component.dispatchEvent(Component.java:4565)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4619)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4280)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4210)
at java.awt.Container.dispatchEventImpl(Container.java:2127)
at java.awt.Window.dispatchEventImpl(Window.java:2482)
at java.awt.Component.dispatchEvent(Component.java:4565)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:684)
at java.awt.EventQueue.access$000(EventQueue.java:85)
at java.awt.EventQueue$1.run(EventQueue.java:643)
at java.awt.EventQueue$1.run(EventQueue.java:641)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
at …

我一直在研究一个程序,以了解更多有关JAVA的知识,我几乎已经完成了.自从我使用序列化以来已经有一段时间了,甚至在刷完它之后,我仍然缺少一些东西.我正在尝试将此类保存到文件中,但它会抛出NotSerialzableException.这个类MonetaryField包含非原始类型SingleField,它是Serialized并且可以保存到磁盘.它还包含以下内容:

public class MonetaryField extends JPanel implements Serializable {

    private static final long serialVersionUID = 1L;
    public JLabel label;
    public SingleField gold;
    public SingleField silver;
    public SingleField copper;

    public MonetaryField() {

    }

    public MonetaryField(String s, boolean editable, boolean border) {
            label = new JLabel(s);
            gold = new SingleField("gold.png", border);
            silver = new SingleField("silver.png", border);
            copper = new SingleField("copper.png", border);
            gold.addKeyListener(keys);
            silver.addKeyListener(keys);
            copper.addKeyListener(keys);

            if(!editable) {
                    gold.setEditable(false);
                    silver.setEditable(false);
                    copper.setEditable(false);
            }
            GroupLayout layout = new GroupLayout(this);             
            this.setLayout(layout);
            layout.setHorizontalGroup(
                  layout.createSequentialGroup()
                      .addComponent(label)
                      .addComponent(gold)
                      .addComponent(silver)
                      .addComponent(copper) …