Android原生 MQTT开发

一、引包

1.1.模块的build.gradle

    //mqtt框架
    implementation 'org.eclipse.paho:org.eclipse.paho.client.mqttv3:1.1.0'
    implementation 'org.eclipse.paho:org.eclipse.paho.android.service:1.1.1'
    implementation 'org.bouncycastle:bcpkix-jdk15on:1.59'

1.2 旧版AndroidStudio开发工具在项目的guild.gradle引入

   maven {
            url "https://repo.eclipse.org/content/repositories/paho-snapshots/"
        }

1.3 新版则在setting.gradle引入

   maven {
            url "https://repo.eclipse.org/content/repositories/paho-snapshots/"
        }

二、工具类封装

/**
 * mqtt
 * 服务
 */

public class XyMqttService extends Service {

    public final static String TAG = "数据处理";
    public static MqttAndroidClient mqttAndroidClient;
    private static MqttConnectOptions mMqttConnectOptions;

    //wss://z66811d5.ala.cn-hangzhou.emqxsl.cn:8084/mqtt
    public static String HOST = "tcp://www.....:1883";//服务器地址（协议+地址+端口号）
//    public static String HOST = "tcp://.........n:8883";//服务器地址（协议+地址+端口号）

    public String USERNAME = "xiaoya";//用户名

    public String PASSWORD = "xiaoya";//密码
    public static String PUBLISH_TOPIC = "xiaoya/video/pull/1";//发布主题
    public static String RESPONSE_TOPIC = "xiaoya/video/1111";//响应主题
    public String CLIENTID = "safffadasaafqedq2";//设备唯一标识


    /**
     * 订阅主题：
     * 小雅视频拉取：xiaoya/video/pull/+
     * 小雅视频通话：xiaoya/video/chat/+
     */

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {

        init();

        return START_NOT_STICKY;//非粘性的 service强制杀死后，不会尝试重新启动service
    }


    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    /**
     * 开启服务
     */
    public static void startService(Context mContext) {
        mContext.startService(new Intent(mContext, XyMqttService.class));
    }

    /**
     * 发布 （模拟其他客户端发布消息）
     *
     * @param message 消息
     */
    public static void publish(String message) {
        String topic = PUBLISH_TOPIC;
        Integer qos = 1;
        Boolean retained = false;
        try {
            //参数分别为：主题、消息的字节数组、服务质量、是否在服务器保留断开连接后的最后一条消息
            mqttAndroidClient.publish(topic, message.getBytes(), qos.intValue(), retained.booleanValue());
        } catch (MqttException e) {
            e.printStackTrace();
        }
    }

    /**
     * 响应 （收到其他客户端的消息后，响应给对方告知消息已到达或者消息有问题等）
     *
     * @param message 消息
     */
    public static void response(String message) {
        String topic = RESPONSE_TOPIC;
        Integer qos = 1;
        Boolean retained = false;
        try {
            //参数分别为：主题、消息的字节数组、服务质量、是否在服务器保留断开连接后的最后一条消息
            mqttAndroidClient.publish(topic, message.getBytes(), qos.intValue(), retained.booleanValue());
        } catch (MqttException e) {
            e.printStackTrace();
        }
    }

    /**
     * 初始化
     */
    private void init() {

        String serverURI = HOST; //服务器地址（协议+地址+端口号）
        Logger.d("==初始化MQ:" + serverURI);
        if (mqttAndroidClient == null) {
            mqttAndroidClient = new MqttAndroidClient(this, serverURI, CLIENTID);
            mqttAndroidClient.setCallback(mqttCallback); //设置监听订阅消息的回调

        }
        if (mMqttConnectOptions == null) {
            mMqttConnectOptions = new MqttConnectOptions();

            try {
//                InputStream caCrtFileI = getResources().openRawResource(R.raw.ca);
//                mMqttConnectOptions.setSocketFactory(getSingleSocketFactory(caCrtFileI));

                mMqttConnectOptions.setCleanSession(true); //设置是否清除缓存
                mMqttConnectOptions.setConnectionTimeout(10); //设置超时时间，单位：秒
                mMqttConnectOptions.setKeepAliveInterval(20); //设置心跳包发送间隔，单位：秒
                mMqttConnectOptions.setUserName(USERNAME); //设置用户名
                mMqttConnectOptions.setPassword(PASSWORD.toCharArray()); //设置密码
            } catch (Exception e) {
                e.printStackTrace();
            }

        }
        // last will message
        boolean doConnect = true;
        String message = "{\"status\":\"" + CLIENTID + "\"}";

        String topic = PUBLISH_TOPIC;
        Integer qos = 1;
        Boolean retained = true;
        if ((!message.equals("")) || (!topic.equals(""))) {
            // 最后的遗嘱
            try {
                mMqttConnectOptions.setWill(topic, message.getBytes(), qos.intValue(), retained.booleanValue());
            } catch (Exception e) {
                Logger.i("==Exception Occured==");
                doConnect = false;
                iMqttActionListener.onFailure(null, e);
            }
        }
        if (doConnect) {
            doClientConnection();
        }
    }

    /**
     * 连接MQTT服务器
     */
    private static void doClientConnection() {
        try {
            if (!mqttAndroidClient.isConnected() && isConnectIsNomarl()) {
                Logger.d("====连接MQTT服务器===" + HOST);
                mqttAndroidClient.connect(mMqttConnectOptions, null, iMqttActionListener);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 判断网络是否连接
     */
    private static boolean isConnectIsNomarl() {
        ConnectivityManager connectivityManager = (ConnectivityManager) XiaoYaApp.getContext().getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo info = connectivityManager.getActiveNetworkInfo();
        if (info != null && info.isAvailable()) {
            String name = info.getTypeName();
            Logger.d("===当前网络名称：" + name);
            return true;
        } else {
            Logger.d("===没有可用网络===");
            /*没有可用网络的时候，延迟3秒再尝试重连*/
            new Handler().postDelayed(new Runnable() {
                @Override
                public void run() {
                    Logger.d("===没有可用网络doClientConnection===");
                    doClientConnection();
                }
            }, 3000);
            return false;
        }
    }

    //MQTT是否连接成功的监听
    private static IMqttActionListener iMqttActionListener = new IMqttActionListener() {

        @Override
        public void onSuccess(IMqttToken arg0) {
            Logger.d("==mqtt连接成功 " + HOST);
            try {
                if (mqttAndroidClient != null) {
                    mqttAndroidClient.subscribe(PUBLISH_TOPIC, 1);//订阅主题，参数：主题、服务质量
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

        @Override
        public void onFailure(IMqttToken arg0, Throwable arg1) {
            arg1.printStackTrace();
            Logger.d("==mqtt连接失败 ==" + arg1);
            doClientConnection();//连接失败，重连（可关闭服务器进行模拟）
        }
    };

    //订阅主题的回调
    private MqttCallback mqttCallback = new MqttCallback() {

        @Override
        public void messageArrived(String topic, MqttMessage msgStr) throws Exception {

            try {
                String enCodeMsg = new String(msgStr.getPayload());
                Logger.d("==收到消息： " + enCodeMsg);

                if (enCodeMsg.contains("请求视频推流")) {
                    initLiveCamera();
                } else if (enCodeMsg.contains("退出视频推流")) {
                    deStroyLive();
                }

                //收到消息，这里弹出Toast表示。如果需要更新UI，可以使用广播或者EventBus进行发送
                //收到其他客户端的消息后，响应给对方告知消息已到达或者消息有问题等
//                response("message arrived");
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

        @Override
        public void deliveryComplete(IMqttDeliveryToken arg0) {

        }

        @Override
        public void connectionLost(Throwable arg0) {
            Logger.d("==连接断开 ");
//            doClientConnection();//连接断开，重连
        }
    };

    public static void disconnect(Context context) {
        try {
            if (mqttAndroidClient != null && mqttAndroidClient.isConnected()) {
                mqttAndroidClient.unsubscribe(PUBLISH_TOPIC);
                mqttAndroidClient.unregisterResources();
                mqttAndroidClient.disconnect(0); //断开连接
                mqttAndroidClient = null;
                context.stopService(new Intent(context, XyMqttService.class));

                ZegoExpressEngine.destroyEngine(new IZegoDestroyCompletionCallback() {
                    @Override
                    public void onDestroyCompletion() {
                        //销毁成功
                    }
                });
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


    /**
     * 单向
     * 认证
     */
    public static SSLSocketFactory getSingleSocketFactory(InputStream caCrtFileInputStream) throws Exception {
        Security.addProvider(new BouncyCastleProvider());
        X509Certificate caCert = null;

        BufferedInputStream bis = new BufferedInputStream(caCrtFileInputStream);
        CertificateFactory cf = CertificateFactory.getInstance("X.509");

        while (bis.available() > 0) {
            caCert = (X509Certificate) cf.generateCertificate(bis);
        }
        KeyStore caKs = KeyStore.getInstance(KeyStore.getDefaultType());
        caKs.load(null, null);
        caKs.setCertificateEntry("cert-certificate", caCert);
        TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
        tmf.init(caKs);
        SSLContext sslContext = SSLContext.getInstance("TLSv1.2");
        sslContext.init(null, tmf.getTrustManagers(), null);
        return sslContext.getSocketFactory();
    }





}