public  static  void  testLoginStatus()throws  XMPPException,InterruptedException {
        AccountManager accountManager;
        final ConnectionConfiguration connectionConfig = new ConnectionConfiguration("127.0.0.1", Integer.parseInt("5222"), "");
// 允許自動連接
        connectionConfig.setReconnectionAllowed(true
 
);
        connectionConfig.setSendPresence(false);
        final Connection connection = new XMPPConnection(connectionConfig);
        try {
            connection.connect();// 開啟連接


            accountManager = connection.getAccountManager();// 獲取賬戶管理類
        } catch (XMPPException e) {
            
 
throw new IllegalStateException(e);
        }
        connection.login("001", "001", "");

        Presence presence=new Presence(Presence.Type.available);
        presence.setStatus("1");
        connection.sendPacket(presence);
        ProviderManager.getInstance().addIQProvider("ping", "urn:xmpp:ping
 
", new PingIQProvider());

        connection.addPacketListener(new PacketListener() {
            @Override
            public void processPacket(Packet p) {
                try {
                    Thread.sleep(50000);
                } catch (Exception ex){}

                PingIQ pingIQ = (PingIQ) p;
                IQ pongIQ = pingIQ.createResultIQ(pingIQ);
                // 返回
                connection.sendPacket(pongIQ);

            }}, new PacketTypeFilter(PingIQ.class));
//Roster roster=connection.getRoster();
//roster.createEntry("[email protected]","001", new String[]{"Friends"});
        //監聽接收到的消息  包括單聊 群聊  和廣播
// ChatManager cm=connection.getChatManager();
//        cm.addChatListener(new ChatManagerListener() {
//            @Override
//            public void chatCreated(Chat chat, boolean create) {
//                chat.addMessageListener(new MessageListener() {
//                    @Override
//                    public void processMessage(Chat chat, Message msg) {
//                        if (msg.getBody() != null) {
//                            try {
//                                System.out.println("cm:"+msg.getBody());
//                                System.out.println(chat.getParticipant());
//                                chat.sendMessage("你剛才說的是：" + msg.getBody()); // 發送消息
//                            } catch (XMPPException e) {
//                                e.printStackTrace();
//                            }
//                        }
//                    }
//                });
//            }
//        });
//單聊監聽
        Chat mychat = connection.getChatManager().createChat("[email protected]/Spark", // 接收端的JID，JID是要加域的
                new MessageListener() {
                    @Override
                    public void processMessage(Chat chat, Message message)  {
                        String messageBody = message.getBody();
                        try {
                            if (message.getBody()!=null) {
                                System.out.println("接受到來自002的消息:" + message.getBody());
                                chat.sendMessage("您發的消息是:" + message.getBody());
                            }
                        }catch (Exception ex){
                            System.out.println(ex.getMessage());
                        }



                    }
                });

        Message msg = new Message();
        msg.setBody("upload/casePic/2016/5/11/14629304841938816.jpg");
        mychat.sendMessage(msg);
      //  connection.disconnect();
        while (true);


    }

openfire維持在線狀態,監聽消息