我想序列化我的JFrame，但不幸的是我得到了NotSerializableException. 我认为这JFileChoosers就是原因，所以我transient向它们添加了修饰符：
transient JFileChooser fc = new JFileChooser(".");
它们是因为删除它们可以解决问题，但我需要使用JFileChooser如何使它真正瞬态到序列化？
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.border.BevelBorder;
import javax.swing.border.TitledBorder;
public class GlowneOkno extends JFrame{
private static final long serialVersionUID = 1L;
private JPanel panelPrawo , panelDol;
private Okienko panelSr ;
private final static String[] etykietyFigur = {"Elipsa" , "Kolo" , "Kwadrat" , "Prostokat" , "Trojkat" , "Trojkat Rownoboczny"};
private static String[] etykietyPrzyciskowKontrolnych = {"Play", "Pause", "Stop"};
//private JButton playButton, pauseButton, stopButton, elipsaButton, koloButton, kwadratButton, okragButton, prostokatButton, trojkatButton, trojkatRButton;
private JButton[] przyciskiFigur, przyciskiKontrolne;
private final static int SIZE = 550;
//-------
private JTabbedPane jtp;
private MyListModel modelListy;
private JList jl;
private MyListCellRenderer cellRender;
public GlowneOkno() {
super("Program");
createGUI();
}
private void createGUI(){
setSize(SIZE + 120, SIZE + 100);
// setPreferredSize(new Dimension(800, SIZE));
createMenus();
modelListy = new MyListModel(new ArrayList<>());
panelSr = new Okienko(modelListy);
panelDol = new JPanel(new GridLayout(1,3,50,60));
panelPrawo = new JPanel();
ActionListener zmieniaczFigur = new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
JButton jb = (JButton) e.getSource();
System.out.println("lkiojgwkjhugfshbkjuidsafhbkfaqwsuki");
switch(jb.getText()){
case "Elipsa": ((Okienko) panelSr).setWylosowanaFigura(Okienko.ELIPSA); break;
case "Kolo": ((Okienko) panelSr).setWylosowanaFigura(Okienko.KOLO); break;
case "Kwadrat": ((Okienko) panelSr).setWylosowanaFigura(Okienko.KWADRAT); break;
case "Prostokat": ((Okienko) panelSr).setWylosowanaFigura(Okienko.PROSTOKAT); break;
case "Trojkat": ((Okienko) panelSr).setWylosowanaFigura(Okienko.TROJKAT); break;
case "Trojkat /nRownoboczny": ((Okienko) panelSr).setWylosowanaFigura(Okienko.TROJKAT_ROWNOBOCZNY); break;
}
}
};
ActionListener ppsListener = new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
JButton jb = (JButton) e.getSource();
switch(jb.getText()){
case "Play": ((Okienko) panelSr).playThreads(); break;
case "Pause":((Okienko) panelSr).pauseThreads(); break;
case "Stop": ((Okienko) panelSr).stopThreads(); break;
}
}
};
przyciskiFigur = dodajButtony(panelPrawo, przyciskiFigur, etykietyFigur);
panelPrawo.setLayout(new GridLayout(przyciskiFigur.length , 1));
add(panelPrawo, BorderLayout.EAST);
jtp = new JTabbedPane(JTabbedPane.BOTTOM);
jtp.setPreferredSize(new Dimension(550, 120));
przyciskiKontrolne = dodajButtony(panelDol, przyciskiKontrolne, etykietyPrzyciskowKontrolnych);
dodajListenera(przyciskiKontrolne, ppsListener);
for(JButton button: przyciskiKontrolne)
button.setFont(new Font("", Font.BOLD, 24));
System.out.println(przyciskiFigur.length);
dodajListenera(przyciskiFigur, zmieniaczFigur);
jtp.addTab("Kontrola", panelDol);
add(jtp,BorderLayout.SOUTH);
//dodawanie drugiej zakladki---> listy
jl = new JList(modelListy);
cellRender = new MyListCellRenderer();
jl.setCellRenderer(cellRender);
JScrollPane jsp = new JScrollPane();
jsp.getViewport().setView(jl);
jtp.addTab("Figury", jsp);
//
BevelBorder b = new BevelBorder(BevelBorder.LOWERED);
panelSr.setBorder(new TitledBorder(b, "Latajace figury"));
add(panelSr, BorderLayout.CENTER);
setVisible(true);
setDefaultCloseOperation(EXIT_ON_CLOSE);
}
private void createMenus() {
JMenuBar jmb = new JMenuBar();
JMenu jm = new JMenu("File");
JMenuItem save = new JMenuItem("save");
JMenuItem load = new JMenuItem("load");
save.addActionListener(new ActionListener() {
transient JFileChooser fc = new JFileChooser(".");
@Override
public void actionPerformed(ActionEvent e) {
int returnVal = fc.showSaveDialog(GlowneOkno.this);
if (returnVal == JFileChooser.APPROVE_OPTION) {
File file = fc.getSelectedFile();
save(file);
}
}
private void save(File file) {
FileOutputStream fos = null;
ObjectOutputStream oos = null;
/*
* Zapis do strumienia (plikowego, ale może być dowolne)
*/
try {
fos= new FileOutputStream(file); //utworzenie strumienia wyjściowego
oos = new ObjectOutputStream(fos); //utworzenie obiektu zapisującego do strumienia
oos.writeObject(GlowneOkno.this); //serializacja obiektu
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
// zamykamy strumienie w finally
try {
if (oos != null) oos.close();
} catch (IOException e) {}
try {
if (fos != null) fos.close();
} catch (IOException e) {}
}
}
});
load.addActionListener(new ActionListener() {
transient JFileChooser fc = new JFileChooser(".");
@Override
public void actionPerformed(ActionEvent e) {
int returnVal = fc.showOpenDialog(GlowneOkno.this);
if (returnVal == JFileChooser.APPROVE_OPTION) {
File file = fc.getSelectedFile();
load(file);
}
}
private void load(File file) {
FileInputStream fis = null;
ObjectInputStream ois = null;
try {
fis = new FileInputStream(file); //utworzenie strumienia wejściowego
ois = new ObjectInputStream(fis); //utworzenie obiektu odczytującego obiekty ze strumienia
GlowneOkno o = (GlowneOkno) ois.readObject();
/* ArrayList<Przesuwacz> wczytanaListaPrzesuwaczy = (ArrayList<Przesuwacz>) ois.readObject();
panelSr.setListaPrzesuwaczy(wczytanaListaPrzesuwaczy); //deserializacja obiektu
ArrayList<Wyrysowywalny> w = new ArrayList<Wyrysowywalny>();
for(Przesuwacz p: wczytanaListaPrzesuwaczy){
w.add(p.getF());
}
panelSr.l = w;
System.out.println(w.size() + " -----------------------------------------");*/
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
} finally {
// zasoby zwalniamy w finally
try {
if (ois != null) ois.close();
} catch (IOException e) {}
try {
if (fis != null) fis.close();
} catch (IOException e) {}
}
}
});
jm.add(save); jm.add(load); jmb.add(jm);
setJMenuBar(jmb);
}
private JButton[] dodajButtony(JPanel jp , JButton[] bTab , String[] etykiety ){
bTab = new JButton[etykiety.length];
for(int i = 0; i < bTab.length; i++){
bTab[i] = new JButton(etykiety[i]);
jp.add(bTab[i]);
}
return bTab;
}
private void dodajListenera(JButton[] bTab , ActionListener al){
for(JButton jb : bTab)
jb.addActionListener(al);
}
public static void main(String[] args) {
new GlowneOkno();
}
}
错误
java.io.NotSerializableException: javax.swing.plaf.metal.MetalFileChooserUI
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 javax.swing.event.EventListenerList.writeObject(Unknown Source)
at sun.reflect.GeneratedMethodAccessor6.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.defaultWriteObject(Unknown Source)
at javax.swing.JComponent.writeObject(Unknown Source)
at sun.reflect.GeneratedMethodAccessor10.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.defaultWriteFields(Unknown Source)
at java.io.ObjectOutputStream.defaultWriteObject(Unknown Source)
at java.awt.Window.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.writeObject(Unknown Source)
at java.awt.Window.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.writeObject(Unknown Source)
at GlowneOkno$3.save(GlowneOkno.java:152)
at GlowneOkno$3.actionPerformed(GlowneOkno.java:138)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.AbstractButton.doClick(Unknown Source)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(Unknown Source)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.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$000(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$1.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$1.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$1.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)