Scalaオブジェクトのシリアル化

Question

単一の.binファイルにシリアル化された複数のオブジェクトを開くときに問題があります。今は、ファイルを開くときに読み込むオブジェクトを1つしか取得できません。最初のオブジェクトが読み取られた後、エラーメッセージが表示されます（それ以上のオブジェクトは読み取られません）。私のコードは次のようになります。

val ois = new ObjectInputStream(new BufferedInputStream(newFileInputStream(chooser.selectedFile))) 
val toRead:Int = ois.readInt() 
    for (i <- 0 to toRead) { 
     ois.readObject() match { 
     case anObject : myObject => 
      aMutableBuffer += anObject 
     case _ => 
     } 
    ois.close() 
    } 

私は取得していますエラーは、次のたくさんある：

Exception in thread "AWT-EventQueue-0" java.security.PrivilegedActionException:java.security.PrivilegedActionException: java.io.IOException: Stream closed 
at java.security.AccessController.doPrivileged(Native Method) 
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) 
at java.awt.EventQueue.dispatchEvent(EventQueue.java:649) 
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296) 
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211) 
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201) 
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196) 
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188) 
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) 
Caused by: java.security.PrivilegedActionException: java.io.IOException: Stream closed 
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 java.awt.EventQueue$2.run(EventQueue.java:652) 
at java.awt.EventQueue$2.run(EventQueue.java:650) 
... 9 more 
Caused by: java.io.IOException: Stream closed 
at java.io.BufferedInputStream.getBufIfOpen(BufferedInputStream.java:145) 
at java.io.BufferedInputStream.read(BufferedInputStream.java:241) 
at java.io.ObjectInputStream$PeekInputStream.peek(ObjectInputStream.java:2248) 
at java.io.ObjectInputStream$BlockDataInputStream.peek(ObjectInputStream.java:2541) 
at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2551) 
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1296) 
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350) 
atABCk.PhotoshopApp$$anonfun$ABCPhotoshopApp$$fileOpenPicture$1.apply$mcVI$sp(PhotoshopApp.scala:32) 
at scala.collection.immutable.Range.foreach$mVc$sp(Range.scala:75) 
at ABC.PhotoshopApp$.ABC$PhotoshopApp$$fileOpenPicture(PhotoshopApp.scala:31) 
at ABC.PhotoshopApp$$anon$9$$anon$11$$anon$1$$anonfun$2.apply$mcV$sp(PhotoshopApp.scala:111) 
at scala.swing.Action$$anon$2.apply(Action.scala:60) 
at scala.swing.Action$$anon$1.actionPerformed(Action.scala:78) 
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028) 
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351) 
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387) 
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242) 
at javax.swing.AbstractButton.doClick(AbstractButton.java:389) 
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:809) 
at com.apple.laf.AquaMenuItemUI.doClick(AquaMenuItemUI.java:137) 
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.menuDragMouseReleased(BasicMenuItemUI.java:913) 
at javax.swing.JMenuItem.fireMenuDragMouseReleased(JMenuItem.java:568) 
at javax.swing.JMenuItem.processMenuDragMouseEvent(JMenuItem.java:465) 
at javax.swing.JMenuItem.processMouseEvent(JMenuItem.java:411) 
at javax.swing.MenuSelectionManager.processMouseEvent(MenuSelectionManager.java:305) 
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:852) 
at java.awt.Component.processMouseEvent(Component.java:6373) 
at javax.swing.JComponent.processMouseEvent(JComponent.java:3267) 
at java.awt.Component.processEvent(Component.java:6138) 
at java.awt.Container.processEvent(Container.java:2085) 
at java.awt.Component.dispatchEventImpl(Component.java:4735) 
at java.awt.Container.dispatchEventImpl(Container.java:2143) 
at java.awt.Component.dispatchEvent(Component.java:4565) 
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4621) 
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4282) 
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4212) 
at java.awt.Container.dispatchEventImpl(Container.java:2129) 
at java.awt.Window.dispatchEventImpl(Window.java:2478) 
at java.awt.Component.dispatchEvent(Component.java:4565) 
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:679) 
at java.awt.EventQueue.access$000(EventQueue.java:85) 
at java.awt.EventQueue$1.run(EventQueue.java:638) 
at java.awt.EventQueue$1.run(EventQueue.java:636) 
... 14 more 

私はを追跡し、私のバッファへのオブジェクトを読み込む場合にのみ起こりますオブジェクト。さらに、私はファイルを正しく保存することができました（すべてがそこにあることを確認するためのテストを行ったので）。誰でもここで何が起こっているか考えていますか？

Answer 1

ストリームoisを最後に閉じていますが、ループ内です。次に、ループの最初の行でそれを読み取ろうとします。明らかにaで失敗するものIOException: Stream closed