简介使用smack实现xmpp通讯（一）

环境和工具：

       1.openfire

       2.spark

       3.smack.jar

openfire和spark两个软件，都是直接安装就可以使用的，就没啥说的了。smack的jar包，可以去官网直接下载，一般导入smack和smackx的jar就可以了。

及时的文本消息通讯：

        布局：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <Button
        android:id="@+id/btn_login"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="log In" />

    <Button
        android:id="@+id/btn_sendmsg"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="send Msg" />

    <Button
        android:id="@+id/btn_logout"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="log Out" />

</LinearLayout>

        活动：

public class TestSmack extends Activity implements OnClickListener {
	private Button userLogin;
	private Button userSendmsg;
	private Button userLogout;

	private Connection connection;
	private Handler myhandler;
	File file = null;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.acy_testsma);
		initView();
	}

	public void initView() {
		myhandler = new Handler() {
			@Override
			public void handleMessage(android.os.Message msg) {
				// TODO Auto-generated method stub
				super.handleMessage(msg);
				String txt = null;
				switch (msg.what) {
				case 0:
					txt = msg.getData().getString("msg");
					Toast.makeText(TestSmack.this, txt, 1000).show();
					break;

				default:
					break;
				}
			}
		};

		userLogin = (Button) findViewById(R.id.btn_login);
		userLogin.setOnClickListener(this);
		userSendmsg = (Button) findViewById(R.id.btn_sendmsg);
		userSendmsg.setOnClickListener(this);
		userLogout = (Button) findViewById(R.id.btn_logout);
		userLogout.setOnClickListener(this);
	}

	/**
	 * 链接服务器
	 * 
	 * @return
	 */
	public boolean conServer() {
		try {
			// 这里的服务器地址 为pc的ip地址
			ConnectionConfiguration config = new ConnectionConfiguration(
					"192.168.1.103", 5222);
			connection = new XMPPConnection(config);
			connection.connect();
			return true;
		} catch (XMPPException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return false;
	}

	/**
	 * 登录
	 * 
	 * @param username
	 * @param userpwd
	 * @return
	 */
	public boolean logIn(String username, String userpwd) {
		if (connection != null) {
			try {
				connection.login("admin", "admin");
				return true;
			} catch (XMPPException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		return false;
	}

	/**
	 * 发送消息
	 * 
	 * @param username
	 * @param txt
	 */
	public void sendMsg(String username, String txt) {
		if (connection != null) {
			try {
				Chat chat = connection.getChatManager().createChat(
						"user@jin/Smack", new MessageListener() {

							@Override
							public void processMessage(Chat arg0, Message msg) {
								// TODO Auto-generated method stub
								Bundle bundle = new Bundle();
								bundle.putString("msg", msg.getBody());
								android.os.Message message = new android.os.Message();
								message.what = 0;
								message.setData(bundle);
								myhandler.sendMessage(message);
							}
						});
				chat.sendMessage("hello world");
			} catch (XMPPException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}

	public void logOut() {
		if (connection != null) {
			connection.disconnect();
			connection = null;
		}
	}

	class MyLogThread implements Runnable {

		@Override
		public void run() {
			// TODO Auto-generated method stub
			if (conServer() && logIn("", "")) {
				// to do
			} else {

			}
		}

	}

	@Override
	public void onClick(View v) {
		// TODO Auto-generated method stub
		if (v == userLogin) {
			MyLogThread myLog = new MyLogThread();
			Thread thread = new Thread(myLog);
			thread.start();
		} else if (v == userSendmsg) {
			sendMsg("", "");
		} else if (v == userLogout) {
			if (null != file && file.exists()) {
				file.delete();
				file = null;
			}
			logOut();
		}
	}
}

注意：

       1.

    127.0.0.1:5222 Exception: XMPPError connecting to 127.0.0.1:5222.; : remote-server-error(502)

       远程服务器错误。针对使用模拟器的情况，如果服务端没问题的话，那就是你请求的ip地址跟服务器地址不匹配，把ip地址改为你的电脑ip试试。显然你的pc电脑作为服务器的话，localhost ip地址不是127的那个。

       2. Could not read file

       报只读的文件系统警告。看了下文件的权限，是075，所以就将文件创建的改为临时路径，就没问题了。