RabbitMQ五种消息队列学习（五）–路由模式

标签（空格分隔）： RabbitMQ

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发布订阅模式只是利用路由这个功能，将消息全部分发给所有与路由绑定的队列中，不能对不同的消息进行选择性的分发。

模型结构

路由根据Routing Key进行动态的绑定分发
消息路径如下：

实现

1、生产者

发送一个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 {        // 获取到连接以及mq通道        Connection connection = ConnectionUtil.getConnection();        Channel channel = connection.createChannel();        // 声明exchange        channel.exchangeDeclare(EXCHANGE_NAME, "direct");        // 消息内容        String message = "id = 1000";        channel.basicPublish(EXCHANGE_NAME, "delete", null, message.getBytes());        System.out.println(" [x] Sent '" + message + "'");        channel.close();        connection.close();    }

2、消费者1
绑定路由key

// 绑定队列到交换机
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 {        // 获取到连接以及mq通道        Connection connection = ConnectionUtil.getConnection();        Channel channel = connection.createChannel();        // 声明队列        channel.queueDeclare(QUEUE_NAME, false, false, false, null);        // 绑定队列到交换机        channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "update");        channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "delete");        // 同一时刻服务器只会发一条消息给消费者        channel.basicQos(1);        // 定义队列的消费者        QueueingConsumer consumer = new QueueingConsumer(channel);        // 监听队列，手动返回完成        channel.basicConsume(QUEUE_NAME, false, consumer);        // 获取消息        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、消费者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 {        // 获取到连接以及mq通道        Connection connection = ConnectionUtil.getConnection();        Channel channel = connection.createChannel();        // 声明队列        channel.queueDeclare(QUEUE_NAME, false, false, false, null);        // 绑定队列到交换机        channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "insert");        channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "update");        channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "delete");        // 同一时刻服务器只会发一条消息给消费者        channel.basicQos(1);        // 定义队列的消费者        QueueingConsumer consumer = new QueueingConsumer(channel);        // 监听队列，手动返回完成        channel.basicConsume(QUEUE_NAME, false, consumer);        // 获取消息        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);        }    }

测试

总结：

该模式可以实现对绑定在同一个路由器的地方实现不同的分发模式。那有没有更灵活的处理方式呢？—通配符