之前說到XMPP已經成為即時訊息的標準，那就利用Facebook手機即時通的便捷快速來送Facebook Chat訊息。
其實只要拿之前GTalk的程式碼，稍微修改一下，就可發送了。其中差異在於DIGEST-MD5的認證機制。在Smack討論區已經有人實作出XMPP DIGEST-MD5的物件。只要將login部份加上DIGEST-MD5認證。
※注意：facebook chat發送對象的帳號是-XXXXX@@chat.facebook.com，而XXXXX是一組數字，必須由c.displayBuddyList();列出才會知道。
完整程式碼如下：
package messenger;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Collection;
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.SASLAuthentication;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.packet.Message;
public class facebook implements MessageListener {
XMPPConnection connection;
private volatile static facebook fclient;
static String username = "xxxxxxxx";
static String password = "xxxxxxxx";
private facebook(){}
public static facebook getInstance(){
if (fclient == null) {
synchronized (facebook.class){
if (fclient == null) {
fclient = new facebook();
}
}
}
return fclient;
}
public void login(String userName, String password) throws XMPPException {
SASLAuthentication.registerSASLMechanism("DIGEST-MD5", MySASLDigestMD5Mechanism.class);
ConnectionConfiguration config = new ConnectionConfiguration(
"chat.facebook.com", 5222, "chat.facebook.com");
config.setCompressionEnabled(true);
config.setSASLAuthenticationEnabled(true);
connection = new XMPPConnection(config);
connection.connect();
connection.login(userName, password);
}
public void sendMessage(String message, String to) throws XMPPException {
Chat chat = connection.getChatManager().createChat(to, this);
chat.sendMessage(message);
}
public void displayBuddyList() {
Roster roster = connection.getRoster();
roster.setSubscriptionMode(Roster.SubscriptionMode.accept_all);
Collection<RosterEntry> entries = roster.getEntries();
System.out.println("\n\n" + entries.size() + " buddy(ies):");
for (RosterEntry r : entries) {
System.out.println(r.getUser());
}
}
public void addRoster(String bot, String email, String input){
facebook c = facebook.getInstance();
try {
addRoster(bot,input);
c.sendMessage(input, email);
} catch (XMPPException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void addRoster(String bot,String input){
facebook c = facebook.getInstance();
try {
c.login(username, password);
Roster roster = connection.getRoster();
roster.createEntry(input, null, null);
} catch (XMPPException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
c.disconnect();
}
public void disconnect() {
connection.disconnect();
}
public void processMessage(Chat chat, Message message) {
if (message.getType() == Message.Type.chat)
System.out.println(chat.getParticipant() + " says: "
+ message.getBody());
}
public static void main(String args[]) throws XMPPException, IOException {
// declare variables
facebook c = facebook.getInstance();
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String msg;
// turn on the enhanced debugger
XMPPConnection.DEBUG_ENABLED = false;
// provide your login information here
c.login(username, password);
c.displayBuddyList();
System.out.println("-----");
System.out.println("Enter your message in the console.");
System.out.println("All messages will be sent to abhijeet.maharana");
System.out.println("-----\n");
while (!(msg = br.readLine()).equals("bye")) {
// your buddy's gmail address goes here
c.sendMessage(msg, "-xxxxxxxx@chat.facebook.com");
}
c.disconnect();
System.exit(0);
}
public void alert(String bot,String email, String msg) {
facebook c = facebook.getInstance();
// turn on the enhanced debugger
XMPPConnection.DEBUG_ENABLED = false;
// provide your login information here
try {
c.login(username, password);
c.sendMessage(msg, email);
} catch (XMPPException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
c.disconnect();
}
}
