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9_rabbitmq Topic主题

9_rabbitmq Topic主题

作者: 奇点一氪 | 来源:发表于2018-08-18 10:15 被阅读55次

    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);
        }
    }
    

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