smack api学习

===============================================================  主动发送信息给某个用户  ------------------------------------  XMPPConnection.DEBUG_ENABLED = true;  //设置服务器地址  XMPPConnection conn = new XMPPConnection("127.0.0.1");   conn.connect();  //输入账号和密码登陆  conn.login("test2@127.0.0.1", "123456");   //创建一个和test1的对话，并设置信息监听  Chat mychat = conn.getManager().create("test1@127.0.0.1",          new MessageListener() {              @Override              public void processMessage(Chat chat,, Message message) {                  String messageBody = message.getBody();                  System.out.println("收到信息："+messageBody);              }  });  //发送给test1文本信息  mychat.sendMessage("hello");  //退出登陆  conn.disconnect();  ===============================================================  设置自己的登陆状态  ------------------------------------  XMPPConnection.DEBUG_ENABLED = true;  //设置服务器地址  XMPPConnection conn = new XMPPConnection("127.0.0.1");   conn.connect();  //输入账号和密码登陆  conn.login("test2@127.0.0.1", "123456");     //设置登陆后的个人状态信息  Presence p = new Presence(Presence.Type.available);  p.setStatus("发呆中。。。");  conn.sendPacket(p);    //退出登陆  conn.disconnect();  ==========================================================================  被动接收用户发来的信息  ------------------------------------  XMPPConnection.DEBUG_ENABLED = true;  //设置服务器地址  XMPPConnection conn = new XMPPConnection("127.0.0.1");   conn.connect();  //输入账号和密码登陆  conn.login("test1@127.0.0.1", "123456");   //设置信息的监听  conn.getChatManager().addChatListener(new ChatManagerListener() {      @Override      public void chatCreated(Chat chat, boolean createdLocally) {          chat.addMessageListener(new MessageListener() {              @Override              public void processMessage(Chat chat, Message message) {                  String messageBody = message.getBody();                   System.out.println("接收到信息："+messageBody);                             }          });      }  });  //退出登陆  conn.disconnect();  ==========================================================================  获取我的好友列表  ------------------------------------  //设置服务器地址  XMPPConnection conn = new XMPPConnection("127.0.0.1");   conn.connect();  //输入账号和密码登陆  conn.login("test1@127.0.0.1", "123456");   Collection<RosterEntry> rosters = conn.getRoster().getEntries();  System.out.println("我的好友列表：=======================");  for(RosterEntry rosterEntry : rosters){      System.out.print("name: "+rosterEntry.getName()+",jid: "+rosterEntry.getUser());      System.out.println("");  }  System.out.println("我的好友列表：=======================");    conn.disconnect();  ==========================================================================  聊天窗口输入状态，使用XEP-0085 协议  ------------------------------------  //发送给test1初始文本信息,附带输入状态  Message mess = new Message();  mess.addExtension(new ChatStateExtension(ChatState.active));  mychat.sendMessage(mess);  //发送给test1初始文本信息,附带正在输入的状态  Message mess = new Message();  mess.addExtension(new ChatStateExtension(ChatState.composing));  mychat.sendMessage(mess);    //发送给test1初始文本信息,附带暂停输入的状态  Message mess = new Message();  mess.addExtension(new ChatStateExtension(ChatState.paused));  mychat.sendMessage(mess);  //其他略。。。    //接收的时候  public void processMessage(Chat chat, Message message) {      String messageBody = message.getBody();      PacketExtension pe;            pe = message.getExtension("composing","http://jabber.org/protocol/chatstates");      if(pe != null){          System.out.println("对方正在输入......");      }            pe = message.getExtension("active","http://jabber.org/protocol/chatstates");      if(pe != null){          System.out.println("接收到信息："+messageBody);      }        pe = message.getExtension("paused","http://jabber.org/protocol/chatstates");      if(pe != null){          System.out.println("对方已暂停输入");      }        pe = message.getExtension("inactive","http://jabber.org/protocol/chatstates");      if(pe != null){          System.out.println("对方聊天窗口失去焦点");      }        pe = message.getExtension("gone","http://jabber.org/protocol/chatstates");      if(pe != null){          System.out.println("对方聊天窗口被关闭");      }  }  ==========================================================================  接收邀请，加入多人聊天房间  ------------------------------------  MultiUserChat.addInvitationListener(conn, new InvitationListener() {      @Override      public void invitationReceived(XMPPConnection conn, String room,              String inviter, String reason, String password, Message message) {          MultiUserChat multiUserChat = new MultiUserChat(conn, room);          System.out.println("收到来自 "+inviter+" 的聊天室邀请。邀请附带内容："+reason);          try {              multiUserChat.join("test2", password);          } catch (XMPPException e) {              System.out.println("加入聊天室失败");              e.printStackTrace();          }          System.out.println("成功加入聊天室");          multiUserChat.addMessageListener(new PacketListener() {              @Override              public void processPacket(Packet packet) {                  Message message = (Message)packet;                  //接收来自聊天室的聊天信息                  System.out.println(message.getFrom()+":"+message.getBody());              }          });      }      //发送信息到聊天室      multiUserChat.sendMessage("新手到来，大家关照！");  });    ==========================================================================  登陆gtalk  ------------------------------------  XMPPConnection conn = new XMPPConnection(new ConnectionConfiguration("talk.google.com", 5222, "gmail.com"));  conn.connect();  //输入gtalk的账号密码  conn.login("88888888", "8888888888");   Collection<RosterEntry> rosters = conn.getRoster().getEntries();  //获取gtalk上的好友列表  System.out.println("我的好友列表：=======================");    for(RosterEntry rosterEntry : rosters){      System.out.print("name: "+rosterEntry.getName()+",jid: "+rosterEntry.getUser());      System.out.println("");  }  System.out.println("我的好友列表：=======================");    conn.disconnect();  ==========================================================================