java – NotSerializableException(UpdateHandler)
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我编写了一个GUI,它使用RMI连接服务器应用程序.因为GUI必须向在线用户显示一个线程刷新JLabel,其中包括“在线用户列表”.有时我在运行时遇到这个异常：
Caused by: java.io.NotSerializableException:javax.swing.plaf.basic.BasicTextUI$UpdateHandler
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1184)
at java.io.ObjectOutputStream.access$300(ObjectOutputStream.java:162)
at java.io.ObjectOutputStream$PutFieldImpl.writeFields(ObjectOutputStream.java:1707)
at java.io.ObjectOutputStream.writeFields(ObjectOutputStream.java:482)
at java.awt.Container.writeObject(Container.java:3697)
at sun.reflect.GeneratedMethodAccessor11.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
…
此处出现例外情况：
try {
onlineUser = Client.getInstance().connect().GetOnlineUser();
} catch (RemoteException e2) {
e2.printStackTrace();
}
在这个方法中：
public void lookForPlayers() {
this.getPanel_2().removeAll();
List<User> onlineUser = new ArrayList<User>();
try {
onlineUser = Client.getInstance().connect().GetOnlineUser();
} catch (RemoteException e2) {
e2.printStackTrace();
}
int i = 5;
for (User user : onlineUser) {
if (!(user.getID_user().equals(Client.getInstance().getUser()
.getID_user()))) {
JLabel lbltest = new JLabel(user.getID_user());
lbltest.setBounds(10, i, 121, 14);
this.getPanel_2().add(lbltest);
i = i + 17;
}
}
this.getPanel_2().repaint();
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
我在Timer-inner-class中使用这个Methode：
private class Prozess extends TimerTask {
public void run() {
lookForPlayers();
checkEinladungen();
checkBest?tigung();
}
}
这是具有Timer-inner-class的类(大多数是GUI)：
package ch.berufsbildungscenter.gui;
import java.awt.Color;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.rmi.RemoteException;
import java.util.ArrayList;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;
import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.SwingConstants;
import javax.swing.border.Border;
import javax.swing.border.EmptyBorder;
import javax.swing.border.LineBorder;
import ch.berufsbildungscenter.rmi.Client;
import ch.berufsbildungscenter.rmi.User;
public class LogedInWindow extends JFrame implements ActionListener {
/**
*
*/
private static final long serialVersionUID = -3892660882088306231L;
private JPanel contentPane;
Border border = BorderFactory.createLineBorder(Color.GREEN, 1);
Font font = new Font("Arial", Font.PLAIN, 18);
FontMetrics metr = this.getFontMetrics(font);
JButton b = new JButton(new ImageIcon("/recources/images/button.png"));
private JPanel panel_2 = new JPanel();
private JButton btnPaddleWhlen = new JButton("Paddle w\u00E4hlen");
private User users = new User();
private String chal;
private JButton ok = new JButton("OK");
private JTextField textArea = new JTextField();
private JButton btnAbmelden = new JButton("Abmelden");
private Timer timer;
/**
* Launch the application.
*/
/**
* Create the frame.
*/
public LogedInWindow(User u) {
this.setTimer(new Timer());
this.getTimer().scheduleAtFixedRate(new Prozess(), 0, 10);
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 400, 450);
setResizable(false);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
setLocationRelativeTo(null);
this.getBtnPaddleWhlen().addActionListener(this);
this.getOk().addActionListener(this);
this.getBtnAbmelden().addActionListener(this);
timer = new Timer();
JPanel panel_1 = new JPanel();
panel_1.setBounds(10, 0, 364, 44);
contentPane.add(panel_1);
panel_1.setLayout(null);
JLabel lblAngemeldetAls = new JLabel("Angemeldet als:");
lblAngemeldetAls.setBounds(0, 18, 100, 33);
lblAngemeldetAls.setHorizontalAlignment(SwingConstants.CENTER);
panel_1.add(lblAngemeldetAls);
JLabel lblNewLabel = new JLabel(u.getID_user());
lblNewLabel.setBounds(102, 18, 150, 33);
lblNewLabel.setFont(font);
panel_1.add(lblNewLabel);
JLabel lblOnline = new JLabel("Online");
lblOnline.setBounds(260, 11, 46, 14);
panel_1.add(lblOnline);
panel_1.add(b);
JButton btnNewButton_1 = new JButton("");
btnNewButton_1.setIcon(new ImageIcon(LogedInWindow.class
.getResource("/images/button.png")));
lblOnline.setBounds(270, 11, 46, 14);
btnNewButton_1.setBorder((BorderFactory.createEmptyBorder(15, 15, 15,
15)));
btnNewButton_1.setBorderPainted(true);
btnNewButton_1.setContentAreaFilled(false);
btnNewButton_1.setFocusPainted(false);
btnNewButton_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});
this.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
try {
e.getWindow().dispose();
Client.getInstance().connect().logout(Client.getInstance());
} catch (RemoteException e1) {
e1.printStackTrace();
}
}
});
btnNewButton_1.setBounds(275, 7, 89, 23);
panel_1.add(btnNewButton_1);
this.getPanel_2().setBorder(new LineBorder(new Color(0, 0, 0)));
this.getPanel_2().setBounds(212, 79, 162, 201);
this.getPanel_2().setLayout(null);
contentPane.add(this.getPanel_2());
JPanel panel_3 = new JPanel();
panel_3.setBounds(10, 291, 364, 42);
contentPane.add(panel_3);
panel_3.setLayout(null);
JButton btnShop = new JButton("Shop");
btnShop.setBounds(0, 11, 80, 23);
panel_3.add(btnShop);
JButton btnPaddleWhlen = new JButton("Paddle w\u00E4hlen");
btnPaddleWhlen.setBounds(110, 11, 122, 23);
panel_3.add(btnPaddleWhlen);
JPanel panel_4 = new JPanel();
panel_4.setBounds(10, 344, 364, 57);
contentPane.add(panel_4);
panel_4.setLayout(null);
JLabel lblChallange = new JLabel("Challenge: ");
lblChallange.setBounds(10, 11, 86, 14);
panel_4.add(lblChallange);
JButton btnNewButton = new JButton("Rangliste");
btnNewButton.setBounds(251, 0, 113, 23);
panel_4.add(btnNewButton);
textArea.setBounds(106, 11, 100, 15);
panel_4.add(textArea);
ok.setBounds(106, 34, 80, 23);
panel_4.add(ok);
btnAbmelden.setBounds(251, 34, 113, 23);
panel_4.add(btnAbmelden);
JPanel panel = new JPanel();
panel.setBorder(new LineBorder(new Color(0, 0, 0)));
panel.setBounds(10, 79, 179, 201);
contentPane.add(panel);
panel.setLayout(null);
JLabel lblCoins = new JLabel("Coins:");
lblCoins.setBounds(10, 11, 121, 14);
panel.add(lblCoins);
JLabel lblPunkte = new JLabel("Punkte:");
lblPunkte.setBounds(10, 36, 121, 14);
panel.add(lblPunkte);
JLabel lblGewonneneSpiele = new JLabel("Gewonnene Spiele:");
lblGewonneneSpiele.setBounds(10, 63, 121, 14);
panel.add(lblGewonneneSpiele);
JLabel lblGespielteSpiele = new JLabel("Gespielte Spiele:");
lblGespielteSpiele.setBounds(10, 88, 121, 14);
panel.add(lblGespielteSpiele);
JLabel lblWinlose = new JLabel("Win/Lose:");
lblWinlose.setBounds(10, 113, 121, 14);
panel.add(lblWinlose);
JButton btnSpielstatistik = new JButton("Spielstatistik");
btnSpielstatistik.setBounds(10, 167, 121, 23);
panel.add(btnSpielstatistik);
JLabel lblPaddle = new JLabel("Paddle:");
lblPaddle.setBounds(10, 138, 121, 14);
panel.add(lblPaddle);
JLabel lblNewLabel_1 = new JLabel("" + u.getGeld());
lblNewLabel_1.setBounds(133, 11, 46, 14);
panel.add(lblNewLabel_1);
JLabel label = new JLabel("" + u.getRankedPunkte());
label.setBounds(133, 36, 46, 14);
panel.add(label);
JLabel label_1 = new JLabel("" + u.getGewonneneSpiele());
label_1.setBounds(133, 61, 46, 14);
panel.add(label_1);
JLabel label_2 = new JLabel("" + u.getGespielteSpiele());
label_2.setBounds(133, 88, 46, 14);
panel.add(label_2);
JLabel label_3 = new JLabel("" + u.getWinLose());
label_3.setBounds(133, 113, 46, 14);
panel.add(label_3);
JLabel label_4 = new JLabel("" + u.getSelectedPaddle());
label_4.setBounds(133, 142, 46, 14);
panel.add(label_4);
JLabel lblStatistik = new JLabel("Statistik");
lblStatistik.setBounds(10, 55, 73, 14);
contentPane.add(lblStatistik);
JLabel lblOnlinePlayers = new JLabel("Online Players");
lblOnlinePlayers.setBounds(212, 55, 100, 14);
contentPane.add(lblOnlinePlayers);
}
private class Prozess extends TimerTask {
public void run() {
lookForPlayers();
checkEinladungen();
checkBest?tigung();
}
}
public void lookForPlayers() {
this.getPanel_2().removeAll();
List<User> onlineUser = new ArrayList<User>();
try {
onlineUser = Client.getInstance().connect().GetOnlineUser();
} catch (RemoteException e2) {
e2.printStackTrace();
}
int i = 5;
for (User user : onlineUser) {
if (!(user.getID_user().equals(Client.getInstance().getUser()
.getID_user()))) {
JLabel lbltest = new JLabel(user.getID_user());
lbltest.setBounds(10, i, 121, 14);
this.getPanel_2().add(lbltest);
i = i + 17;
}
}
this.getPanel_2().repaint();
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public void checkEinladungen() {
Client einlader = Client.getInstance();
try {
einlader = Client.getInstance().connect()
.checkEinladen(Client.getInstance());
} catch (RemoteException e) {
e.printStackTrace();
}
if (!einlader.getUser().getID_user()
.equals(Client.getInstance().getUser().getID_user())) {
int eingabe = JOptionPane.showConfirmDialog(null,
"Wollen sie die Herausforderung von "
+ einlader.getUser().getID_user() + " annehmen?",
"Einladung", JOptionPane.YES_NO_OPTION);
if (eingabe == JOptionPane.YES_OPTION) {
try {
Client.getInstance().connect()
.annehmen(Client.getInstance(), einlader);
setVisible(false);
Client.getInstance().beitreten(Client.getInstance(),
einlader);
dispose();
} catch (RemoteException e) {
e.printStackTrace();
}
}
}
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public void checkBest?tigung() {
Client gegner = Client.getInstance();
try {
gegner = Client.getInstance().connect()
.checkBest?tigungen(Client.getInstance());
} catch (RemoteException e) {
e.printStackTrace();
}
if (!gegner.getUser().getID_user()
.equals(Client.getInstance().getUser().getID_user())) {
setVisible(false);
Client.getInstance().erstellen(Client.getInstance(), gegner);
dispose();
}
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public void actionPerformed(ActionEvent e) {
if (e.getSource().equals(getBtnPaddleWhlen())) {
new Paddle(users);
}
if (e.getSource().equals(getOk())) {
List<User> onlineUser = new ArrayList<User>();
this.setChal(textArea.getText());
try {
onlineUser = Client.getInstance().connect().GetOnlineUser();
} catch (RemoteException e2) {
e2.printStackTrace();
}
boolean exist = false;
for (User u : onlineUser) {
if (this.getChal().equals(u.getID_user())) {
exist = true;
if (u.getClient().isIngame()) {
JOptionPane.showMessageDialog(null, u.getID_user()
+ " befindet sich bereits in einem Spiel",
"Fehler", JOptionPane.WARNING_MESSAGE);
} else if (Client.getInstance().getUser().getID_user()
.equals(u.getID_user())) {
JOptionPane.showMessageDialog(null,
"Du kannst dich nicht selber einladen",
"Fehler", JOptionPane.WARNING_MESSAGE);
} else {
try {
Client.getInstance()
.connect()
.einladen(Client.getInstance(),
u.getClient());
} catch (RemoteException e1) {
e1.printStackTrace();
}
}
}
}
if (exist == false) {
JOptionPane.showMessageDialog(null,
"Spieler wurde nicht gefunden!", "Fehler",
JOptionPane.WARNING_MESSAGE);
}
}
if (e.getSource().equals(getBtnAbmelden())) {
try {
this.dispose();
Client.getInstance().connect().logout(Client.getInstance());
System.exit(0);
} catch (RemoteException e1) {
e1.printStackTrace();
}
}
}
public JPanel getPanel_2() {
return panel_2;
}
public void setPanel_2(JPanel panel_2) {
this.panel_2 = panel_2;
}
public JButton getBtnPaddleWhlen() {
return btnPaddleWhlen;
}
public void setBtnPaddleWhlen(JButton btnPaddleWhlen) {
this.btnPaddleWhlen = btnPaddleWhlen;
}
public User getUsers() {
return users;
}
public void setUsers(User users) {
this.users = users;
}
public String getChal() {
return chal;
}
public void setChal(String chal) {
this.chal = chal;
}
public JTextField getTextArea() {
return textArea;
}
public void setTextArea(JTextField textArea) {
this.textArea = textArea;
}
public JButton getOk() {
return ok;
}
public void setOk(JButton ok) {
this.ok = ok;
}
public JButton getBtnAbmelden() {
return btnAbmelden;
}
public void setBtnAbmelden(JButton btnAbmelden) {
this.btnAbmelden = btnAbmelden;
}
public Timer getTimer() {
return timer;
}
public void setTimer(Timer timer) {
this.timer = timer;
}
}
解决方法:
尝试在对象User上实现Interface Serializable.这应该可以解决您的问题.
您可以在此处阅读有关Serializable的更多信息：http://docs.oracle.com/javase/7/docs/api/java/io/Serializable.html
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