RabbitMQ五種消息隊列學習（五）--路由模式

RabbitMQ五種消息隊列學習（五）–路由模式

標籤（空格分隔）： RabbitMQ

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發佈訂閱模式只是利用路由這個功能，將消息全部分發給所有與路由綁定的隊列中，不能對不同的消息進行選擇性的分發。

模型結構

路由根據Routing Key進行動態的綁定分發
消息路徑如下：

實現

1、生產者

發送一個key：channel.basicPublish(EXCHANGE_NAME, “delete”, null, message.getBytes());

  private final static String EXCHANGE_NAME = "test_exchange_direct";

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

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

        // 消息內容
        String message = "id = 1000";
        channel.basicPublish(EXCHANGE_NAME, "delete", null, message.getBytes());
        System.out.println(" [x] Sent '" + message + "'");

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

2、消費者1
綁定路由key

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

 private final static String QUEUE_NAME = "test_queue_direct_1";

    private final static String EXCHANGE_NAME = "test_exchange_direct";

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

        // 獲取到連接以及mq通道
        Connection connection = ConnectionUtil.getConnection();
        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, "update");
        channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "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
        QueueingConsumer consumer = new QueueingConsumer(channel);
        // 監聽隊列，手動返回完成
        channel.basicConsume(QUEUE_NAME, false, consumer);

        // 獲取消息
        while (true) {
            QueueingConsumer.Delivery delivery = consumer.nextDelivery();
            String message = new String(delivery.getBody());
            System.out.println(" [x] Received '" + message + "'");
            Thread.sleep(10);

            channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
        }
    }

3、消費者2

  private final static String QUEUE_NAME = "test_queue_direct_2";

    private final static String EXCHANGE_NAME = "test_exchange_direct";

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

        // 獲取到連接以及mq通道
        Connection connection = ConnectionUtil.getConnection();
        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, "insert");
        channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "update");
        channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "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
        QueueingConsumer consumer = new QueueingConsumer(channel);
        // 監聽隊列，手動返回完成
        channel.basicConsume(QUEUE_NAME, false, consumer);

        // 獲取消息
        while (true) {
            QueueingConsumer.Delivery delivery = consumer.nextDelivery();
            String message = new String(delivery.getBody());
            System.out.println(" [x] Received '" + message + "'");
            Thread.sleep(10);

            channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
        }
    }

測試

總結：

該模式可以實現對綁定在同一個路由器的地方實現不同的分發模式。那有沒有更靈活的處理方式呢？—通配符