高级特性：

1.引入依赖：

2.ack-nack:

 public static void main(String[] args) throws IOException, TimeoutException {
        //创建连接工厂
        ConnectionFactory connectionFactory = new ConnectionFactory();
        connectionFactory.setHost("192.168.159.8");
        connectionFactory.setPort(5672);
        connectionFactory.setVirtualHost("tuling");
        connectionFactory.setUsername("smlz");
        connectionFactory.setPassword("smlz");
        connectionFactory.setConnectionTimeout(100000);

        //创建一个连接
        Connection connection = connectionFactory.newConnection();

        //创建一个channel
        Channel channel = connection.createChannel();

        //声明交换机
        String exchangeName = "tuling.ack.direct";
        String exchangeType = "direct";
        channel.exchangeDeclare(exchangeName,exchangeType,true,false,null);

        //声明队列
        String queueName = "tuling.ack.queue";
        channel.queueDeclare(queueName,true,false,false,null);

        //交换机绑定队列
        String routingKey = "tuling.ack.key";
        channel.queueBind(queueName,exchangeName,routingKey);


        /**
         * 消费端限流 需要关闭消息自动签收
         */
        channel.basicConsume(queueName,false,new TulingAckConsumer(channel));
    }
}

2Ack-nackRabbitMQ  producers;
 

public class AckNackRabbitmqProducer {

    public static void main(String[] args) throws IOException, TimeoutException {

        //创建连接工厂
        ConnectionFactory connectionFactory = new ConnectionFactory();
        connectionFactory.setHost("192.168.159.8");
        connectionFactory.setPort(5672);
        connectionFactory.setVirtualHost("tuling");
        connectionFactory.setUsername("smlz");
        connectionFactory.setPassword("smlz");
        connectionFactory.setConnectionTimeout(100000);


        //创建一个连接
        Connection connection = connectionFactory.newConnection();

        //创建一个channel
        Channel channel = connection.createChannel();

        //定义交换机的名称
        String exchangeName = "tuling.ack.direct";

        String routingKey = "tuling.ack.key";

        String msgBody = "你好tuling";


        for(int i=0;i<10;i++) {

            Map<String,Object> infoMap = new HashMap<>();
            infoMap.put("mark",i);

            AMQP.BasicProperties basicProperties = new AMQP.BasicProperties().builder()
                    .deliveryMode(2)//消息持久化
                    .contentEncoding("UTF-8")
                    .correlationId(UUID.randomUUID().toString())
                    .headers(infoMap)
                    .build();
            channel.basicPublish(exchangeName,routingKey,basicProperties,(msgBody+i).getBytes());
        }
    }
}

TulingAckConsumer:

public class TulingAckConsumer extends DefaultConsumer {

    private Channel channel;

    public TulingAckConsumer(Channel channel) {
        super(channel);
        this.channel = channel;
    }

    public void handleDelivery(String consumerTag,Envelope envelope,AMQP.BasicProperties properties,byte[] body) throws IOException {
        try{
            //模拟业务
            Integer mark = (Integer) properties.getHeaders().get("mark");
            if(mark != 0 ) {
                System.out.println("消费消息:"+new String(body));
                channel.basicAck(envelope.getDeliveryTag(),false);
            }else{
                throw new RuntimeException("模拟业务异常");
            }
        }catch (Exception e) {
            System.out.println("异常消费消息:"+new String(body));
            //重回队列
            //channel.basicNack(envelope.getDeliveryTag(),false,true);
            //不重回队列
            channel.basicNack(envelope.getDeliveryTag(),false,false);

        }
    }
}