将路邮键和某种模式绑定

image.png

• ”#“警号匹配多个
  比如：usa.#

• ”*“星号匹配一个

发送的是美国新闻，就会路由到新闻的消息队列，
发送的是美国天气预报，就会路由到天气预报的消息队列，

TICP模型

image.png

https://github.com/csy512889371/learndemo/tree/master/ctoedu-rabitmq

生产者

import cn.ctoedu.rabbitmq.util.ConnectionUtils;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;

public class Send {
    private final static String EXCHANGE_NAME = "test_exchange_topic";

    public static void main(String[] argv) throws Exception {
        // 获取到连接以及mq通道
        Connection connection = ConnectionUtils.getConnection();
        Channel channel = connection.createChannel();
        // 声明exchange     type类型设置成topic主题方式
        channel.exchangeDeclare(EXCHANGE_NAME, "topic");
        // 消息内容
        String message = "商品发布";
        channel.basicPublish(EXCHANGE_NAME, "Goods.add", null, message.getBytes());
        System.out.println(" [x] Send  '" + message + "'");
        channel.close();
        connection.close();
    }
}

消费者1

import com.rabbitmq.client.*;

import java.io.IOException;

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 {
        // 获取到连接以及mq通道
        Connection connection = ConnectionUtils.getConnection();
        final 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, "goods.add");

        // 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
        Consumer consumer = new DefaultConsumer(channel) {
            // 消息到达 触发这个方法
            @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 ");
                    // 手动回执
                    channel.basicAck(envelope.getDeliveryTag(), false);
                }
            }
        };
        boolean autoAck = false;
        channel.basicConsume(QUEUE_NAME, autoAck, consumer);
    }
}

消费者 2

import cn.ctoedu.rabbitmq.util.ConnectionUtils;
import com.rabbitmq.client.*;

import java.io.IOException;

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 {
        // 获取到连接以及mq通道
        Connection connection = ConnectionUtils.getConnection();
        final Channel channel = connection.createChannel();
        // 声明队列
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);
        // 绑定队列到交换机      操作产品的所有方式交换机都能接受
        channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "goods.#");
        // 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
        Consumer consumer = new DefaultConsumer(channel) {
            // 消息到达 触发这个方法
            @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 ");
                    // 手动回执
                    channel.basicAck(envelope.getDeliveryTag(), false);
                }
            }
        };
        boolean autoAck = false;
        channel.basicConsume(QUEUE_NAME, autoAck, consumer);
    }
}