RabbitMQ3.7.2入門到進階之Topic主題模型

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https://ke.qq.com/course/288116#tuin=5740604a

主題模式

生產者

public class Send {

    private final static String EXCHANGE_NAME = "test_exchange_topic";

    public static void main(String[] argv) throws Exception {
        // 獲取到連接以及mq通道
        Connection connection = ConnectionUtils.getConnection();
        Channel channel = connection.createChannel();

        // 聲明exchange
        channel.exchangeDeclare(EXCHANGE_NAME, "topic");

        // 消息內容
        String message = "id=1001";
        channel.basicPublish(EXCHANGE_NAME, "item.delete", null, message.getBytes());
        System.out.println(" [x] Sent '" + message + "'");

        channel.close();
        connection.close();
    }
}

消費者1

public class Recv {

    private final static String QUEUE_NAME = "test_queue_topic_1";
    private final static String EXCHANGE_NAME = "test_exchange_topic";

    public static void main(String[] argv) throws Exception {

        // 獲取到連接以及mq通道
        Connection connection = ConnectionUtils.getConnection();
        final Channel channel = connection.createChannel();

        // 聲明隊列
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);

        // 綁定隊列到交換機
        channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "item.update");
        channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "item.delete");

        // 同一時刻服務器只會發一條消息給消費者
        channel.basicQos(1);

        // 定義隊列的消費者
        Consumer consumer = new DefaultConsumer(channel) {
            // 消息到達 觸發這個方法
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope,
                    BasicProperties properties, byte[] body) throws IOException {

                String msg = new String(body, "utf-8");
                System.out.println("[2] Recv msg:" + msg);

                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                } finally {
                    System.out.println("[2] done ");
                    // 手動回執
                    channel.basicAck(envelope.getDeliveryTag(), false);
                }
            }
        };

        boolean autoAck = false;
        channel.basicConsume(QUEUE_NAME, autoAck, consumer);
    }
}

消費者2

public class Recv {

    private final static String QUEUE_NAME = "test_queue_topic_1";
    private final static String EXCHANGE_NAME = "test_exchange_topic";

    public static void main(String[] argv) throws Exception {

        // 獲取到連接以及mq通道
        Connection connection = ConnectionUtils.getConnection();
        final Channel channel = connection.createChannel();

        // 聲明隊列
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);

        // 綁定隊列到交換機
        channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "item.update");
        channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "item.delete");

        // 同一時刻服務器只會發一條消息給消費者
        channel.basicQos(1);

        // 定義隊列的消費者
        Consumer consumer = new DefaultConsumer(channel) {
            // 消息到達 觸發這個方法
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope,
                    BasicProperties properties, byte[] body) throws IOException {

                String msg = new String(body, "utf-8");
                System.out.println("[2] Recv msg:" + msg);

                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                } finally {
                    System.out.println("[2] done ");
                    // 手動回執
                    channel.basicAck(envelope.getDeliveryTag(), false);
                }
            }
        };

        boolean autoAck = false;
        channel.basicConsume(QUEUE_NAME, autoAck, consumer);
    }
}