IOException /ファイルを保存するときのJavaセキュリティアクセスエラー

Question

デバッグに問題があります。 "Player"というオブジェクトを.binファイルに保存するメソッドを記述しました。

「保存プロセス」のみを含む私の保存メソッドの最短バージョンです。

public void saveButton_ActionPerformed(ActionEvent e) { 
     ObjectOutputStream playerSave; 
     try { 
      playerSave = new ObjectOutputStream(new FileOutputStream("save/player_data.bin")); 
      playerSave.writeObject(Main.player); 
      playerSave.close(); 
     } catch (FileNotFoundException e1) { 

      e1.printStackTrace(); 
     } catch (IOException e1) { 

      e1.printStackTrace(); 
     } 
} 

この方法を開始した直後に、コンソールから次のエラーが表示されます。

java.io.IOException: failed to load image contents 
at javax.swing.ImageIcon.writeObject(Unknown Source) 
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 java.io.ObjectStreamClass.invokeWriteObject(Unknown Source) 
at java.io.ObjectOutputStream.writeSerialData(Unknown Source) 
at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source) 
at java.io.ObjectOutputStream.writeObject0(Unknown Source) 
at java.io.ObjectOutputStream.defaultWriteFields(Unknown Source) 
at java.io.ObjectOutputStream.writeSerialData(Unknown Source) 
at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source) 
at java.io.ObjectOutputStream.writeObject0(Unknown Source) 
at java.io.ObjectOutputStream.writeObject(Unknown Source) 
at MainWindow.saveButton_ActionPerformed(MainWindow.java:143) 
at MainWindow$2.actionPerformed(MainWindow.java:129) 
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source) 
at javax.swing.AbstractButton$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) 

Answer 1

あなたは（ObjectOutputStream.writeObject）をシリアル化しようとしたときに取得している例外が発生しているあなたのMain.player。

Main.playerにはImageIconフィールドがあり、ImageIconフィールドには画像がないため、シリアル化できません。