我在localhost上使用SMACK api和OpenFire创建了一个简单的客户端。截至目前，我有两个用户说X和Y.每当有人登录到客户端时，都会有一个发送按钮向用户Y发送消息。我检查了XMPP调试管理器，我能够发送/在那里收到消息。但是，我无法在JLabel中显示那些我用于显示消息的消息。如果用户Y按下发送按钮，则根据功能向他自己发送消息并在JLabel上显示。但是当用户X点击发送按钮时，会收到消息，但不会在Y的JLabel上显示/更新消息。
有趣的是，一切都按照gtalk配置的方式工作。
结构如下：
WelcomeUser.java： 是带有用户名和密码提示的欢迎表单。在点击登录按钮时： 它将ChatBoard类设置为可见，并将用户名密码传递给ChatBoard的构造函数。 代码：
chBoard=new ChatBoard(username.getText(),password.getText());
chBoard.setVisible(true);
setVisible(false);
以下是ChatBoard.java的代码：
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Collection;
import javax.swing.GroupLayout;
import javax.swing.GroupLayout.Alignment;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.LayoutStyle.ComponentPlacement;
import javax.swing.border.EmptyBorder;
import org.jivesoftware.smack.Chat;
import org.jivesoftware.smack.ConnectionConfiguration;
import org.jivesoftware.smack.MessageListener;
import org.jivesoftware.smack.Roster;
import org.jivesoftware.smack.RosterEntry;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.packet.Message;
public class ChatBoard extends JFrame implements MessageListener {
private static final long serialVersionUID = 1L;
private JPanel contentPane;
static String username, password;
static XMPPConnection connection;
private JTextField textField;
static JLabel board = new JLabel("");
static Chat chat;
public void sendChat() {
try {
chat = connection.getChatManager().createChat(
"userY@my-pc/Smack", this);
chat.sendMessage("Hello, This is " + username);
} catch (XMPPException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
* Create the frame.
*/
public ChatBoard(String user, String pass) {
username = user;
password = pass;
////
///JFrame creation code ommited for this thread.
// ////////////////////////////////////////////
XMPPConnection.DEBUG_ENABLED = true;
ConnectionConfiguration config = new ConnectionConfiguration(
"127.0.0.1");
connection = new XMPPConnection(config);
try {
connection.connect();
System.out.println("Connected...");
} catch (XMPPException e) {
e.printStackTrace();
System.out.println("Not Connected. Error :" + e.getMessage());
}
try {
connection.login(username, password);
System.out.println("Logged in...");
} catch (XMPPException e) {
e.printStackTrace();
System.out.println("Not Logged in. Error :" + e.getMessage());
}
Roster roster = connection.getRoster();
Collection<RosterEntry> entries = roster.getEntries();
System.out.println("\n\n" + entries.size() + " buddy(ies):");
for (RosterEntry r : entries) {
System.out.println(r.getUser());
}
// /////////////////////////////////
}
@Override
public void processMessage(Chat arg0, Message arg1) {
// TODO Auto-generated method stub
board.setText(board.getText() + arg1.getBody());
System.out.println(arg1.getFrom() + ":" + arg1.getBody().toString());
}
}
我是新手，所以如果有任何愚蠢的错误，请原谅我。非常感谢您的帮助。
混杂。详细信息：使用SMACK 3.2.2在localhost上的OpenFire 3.7.1
答案 0 :(得分：1)
查看http://www.igniterealtime.org/builds/smack/docs/latest/documentation/messaging.html的底部。对于来自其他用户的传入聊天，您必须覆盖ChatManagerListener
你可以在processMessage上设置一个断点并且它是否达到了断点？如果是这样，那可能只是确保：
board.setText()
发生在Swing event dispatch thread
上所以尝试像这样制作你的processMessage：
@Override
public void processMessage(Chat arg0, Message arg1) {
// TODO Auto-generated method stub
try
{
SwingUtilities.invokeAndWait(new Runnable()
{
@Override
public void run()
{
board.setText(board.getText() + arg1.getBody());
}
});
}
catch (InvocationTargetException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (InterruptedException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println(arg1.getFrom() + ":" + arg1.getBody().toString());
}
答案 1 :(得分：0)
我在chatBoard中添加了这个代码，只是在我的代码中提到的构造函数的末尾，它现在似乎工作了:-)谢谢alex.p！
connection.getChatManager().addChatListener(new ChatManagerListener() {
public void chatCreated(final Chat chat, final boolean createdLocally) {
chat.addMessageListener(new MessageListener() {
public void processMessage(Chat chat, Message message) {
//JOptionPane.showMessageDialog(null, "Rec: For " + chat.getParticipant() + " from " + message.getFrom() + "\n" + message.getBody());
String sender=message.getFrom();
String senderNames=sender;
System.out.println("Received message: " + (message != null ? message.getBody() : "NULL"));
board.setText(board.getText()+"\n "+ message.getFrom()+" : "+ message.getBody());
//PrivateChatManager.receiveMessage(sender, senderNames, message.getBody());
}
});
}
});
答案 2 :(得分：0)
希望此代码可以为您提供帮助：
public void processMessage(Chat aChat, Message aMessage) {
final XmppBot bot = this.xmppBot;
final Chat chat = aChat;
final Message message = aMessage;
log.debug("message received, type {}", message.getType().toString());
if (message.getBody() != null) {
Runnable runnable = new Runnable() {
public void run() {
Thread.currentThread().setName("Chat: "+chat.getParticipant()+ " Message: "+ message.getBody());
PrintWriter threadPrintWriter = null;
threadPrintWriter = new PrintWriter(new ChatWriter(chat));
bot.getContext().setChat(chat);
bot.getContext().setPrintWriter(threadPrintWriter);
bot.processCommand(message.getBody());
bot.getContext().removeMultiUserChat();
bot.getContext().removePrintWriter();
}
};
Thread t = new Thread(runnable);
t.start();
}
}