Netty下MQTT客户端实现

Netty下MQTT客户端实现

基于Netty对MQTT客户端的封装,代码如下: 

1、客户端

public class MqttClient extends BaseClient {
    private MqttConnectOptions info = new MqttConnectOptions();
    private MqttProducerProcess producerProcess;
    private MqttConsumerProcess consumerProcess;
    private MqttConsumer consumer;
    private MqttProducer producer;

    public MqttClient() {
        this.setSyncConnect(true);

        info.setClientIdentifier(StringsUtil.getUuid());
        MqttProducerProcessImpl producerProcessObj = new MqttProducerProcessImpl(this);
        MqttConsumerProcessImpl consumerProcessObj = new MqttConsumerProcessImpl(this);

        producerProcess = producerProcessObj;
        consumerProcess = consumerProcessObj;
        
        consumer = consumerProcess;
        producer = producerProcess;

    }
    
    public MqttConnectOptions mqttOptions() {
        return info;
    }

    public MqttConsumer consumer() {
        return consumer;
    }

    public MqttProducer producer() {
        return producer;
    }
    
    @Override
    public String getClientId() {
        return info.getClientIdentifier();
    }

    @Override
    protected void initConnect() {
        super.initConnect();
    }

    @Override
    public void sendMessage(String msg) {
        throw new MethodNotSupportException();
    }

    @Override
    protected void initSocketChannel(SocketChannel ch) {
        ClientProtocolProcess proObj = new ClientProtocolProcess(this, consumerProcess, producerProcess);
        super.initSocketChannel(ch);

        ch.pipeline().addLast("decoder", new MqttDecoder());
        ch.pipeline().addLast("encoder", MqttEncoder.INSTANCE);
        ch.pipeline().addLast("mqttHander", new MqttClientHandler(proObj));
    }

    @Override
    protected boolean loginInit() {
        NettyLog.debug("loginInit: " + info.toString());
        channel.writeAndFlush(ClientProtocolUtil.connectMessage(info));
        return true;
    }

    @Override
    public void disConnect() {
        if (channel != null) {
            NettyLog.debug("disConnect: ");
            channel.writeAndFlush(ClientProtocolUtil.disConnectMessage());
        }
    }
}

2、协议处理
 

public class MqttClientHandler extends SimpleChannelInboundHandler