我有兩個類應該進行通信,但它們不是。一個叫做Chatter,當一個監聽器在Chatter中接收到一個消息時,它應該在第二個類中調用一個叫做ClassView的方法。但我不認爲這個方法正在被調用。方法調用時似乎沒有運行
這裏是喋喋不休代碼:
package instantmessengerplugin;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.TableItem;
import org.jivesoftware.smack.Chat;
import org.jivesoftware.smack.ChatManager;
import org.jivesoftware.smack.MessageListener;
import org.jivesoftware.smack.PacketListener;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.filter.MessageTypeFilter;
import org.jivesoftware.smack.filter.PacketFilter;
import org.jivesoftware.smack.packet.Message;
import org.jivesoftware.smack.packet.Packet;
public class Chatter {
public XMPPConnection connection;
public String user;
public ClassView classView;
public Chat chat;
public PacketFilter packetFilter;
public PacketListener listener;
public Chatter(XMPPConnection connection1,String user1, Display dist)
{
connection = connection1;
user = user1;
openChat();
classView = new ClassView(dist,chat);
}
public void openChat()
{
ChatManager cm = connection.getChatManager();
chat = cm.createChat(user, new MessageListener()
{
public void processMessage(Chat chat ,Message message)
{
if(message.getType().equals(Message.Type.chat))
{
//TableItem item = new TableItem(classView.chatViewer,SWT.NONE);
//item.setText("Them: " + message.getBody());
System.out.println(message.getBody());
classView.updateChat(message);
}
}
}
);
}
}
這裏是類視圖代碼:
package instantmessengerplugin;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableItem;
import org.eclipse.swt.widgets.Text;
import org.jivesoftware.smack.Chat;
import org.jivesoftware.smack.ChatManager;
import org.jivesoftware.smack.MessageListener;
import org.jivesoftware.smack.Roster;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.packet.Message;
import org.jivesoftware.smack.packet.Packet;
public class ClassView {
public Display displayChat;
public Shell shellChat;
final Table chatViewer;
public Chat chat;
public ClassView(Display dist,Chat chat1){
chat = chat1;
displayChat = dist;
shellChat = new Shell(displayChat);
GridLayout gridLayout = new GridLayout();
gridLayout.numColumns = 2;
shellChat.setLayout(gridLayout);
Label contact = new Label(shellChat,SWT.NONE);
GridData data = new GridData();
data.horizontalAlignment = GridData.FILL;
data.horizontalSpan = 2;
data.grabExcessHorizontalSpace = true;
data.grabExcessVerticalSpace = true;
chatViewer = new Table(shellChat,SWT.NONE);
data = new GridData();
data.horizontalSpan = 2;
data.horizontalAlignment = GridData.FILL;
data.verticalAlignment = GridData.FILL;
data.grabExcessHorizontalSpace = true;
chatViewer.setLayoutData(data);
final Text chatBox = new Text(shellChat,SWT.SINGLE);
data = new GridData();
data.verticalAlignment = GridData.FILL;
data.horizontalAlignment = GridData.FILL;
data.grabExcessHorizontalSpace = true;
chatBox.setLayoutData(data);
Button send = new Button(shellChat,SWT.PUSH);
send.setText("Send");
send.addSelectionListener(new SelectionAdapter(){
public void widgetSelected(SelectionEvent e)
{
String s = chatBox.getText();
TableItem item = new TableItem(chatViewer, SWT.NONE);
item.setText("Me: " + s);
try {
chat.sendMessage(s);
} catch (Exception e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
chatBox.setText("");
}
});
shellChat.pack();
shellChat.open();
while(!shellChat.isDisposed())
{
if(!displayChat.readAndDispatch())
{
displayChat.sleep();
}
}
}
public void updateChat(Message message)
{
TableItem item = new TableItem(chatViewer,SWT.NONE);
item.setText("Them: " + message.getBody());
}
}
當喋喋不休而processMessage方法被調用應該說話ClassView中,它將調用updateChat然後在ClassView中更改表格對象。它似乎並沒有發生。表格沒有改變,沒有拋出異常。我知道chatter工作正常,因爲它將消息打印到控制檯就好了。
有誰知道爲什麼updateChat似乎沒有被調用?
更新:
我已經跑在有問題的代碼調試器。下面是現在被稱爲在執行調試堆棧:
FutureTask $ Sync.innerRun()行:不可用[局部變量不可用]
FutureTask.run()行:不可用
的ThreadPoolExecutor $工人.runTask(可運行)行:不可用
的ThreadPoolExecutor $ Worker.run()行:不可用
Thread.run()行:不可用[局部變量不可用]
我不知道這意味着什麼究竟。提到線程是什麼讓我認爲這是做的方法調用不與另一個線程同步。
我解決了同樣的問題,在這裏的答案幫助:http:// stackoverflow。com/questions/4994759/how-to-receive-incoming-messages-using-smack-lib-on-xmpp – ManBugra 2011-02-19 20:28:27