1.8 RabbitMq工作模式之通配符模式

1.添加交换机weather_topic

2.发布者

import com.baiqi.rabbitmq.utils.RabbitConstant;
import com.baiqi.rabbitmq.utils.RabbitUtils;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Map;
/**
 * 发布者
 */
public class WeatherBureau {
    public static void main(String[] args) throws Exception {
        Map area = new LinkedHashMap<String, String>();
        area.put("china.hunan.changsha.20201127", "中国湖南长沙20201127天气数据");
        area.put("china.hubei.wuhan.20201127", "中国湖北武汉20201127天气数据");
        area.put("china.hunan.zhuzhou.20201127", "中国湖南株洲20201127天气数据");
        area.put("us.cal.lsj.20201127", "美国加州洛杉矶20201127天气数据");
        area.put("china.hebei.shijiazhuang.20201128", "中国河北石家庄20201128天气数据");
        area.put("china.hubei.wuhan.20201128", "中国湖北武汉20201128天气数据");
        area.put("china.henan.zhengzhou.20201128", "中国河南郑州20201128天气数据");
        area.put("us.cal.lsj.20201128", "美国加州洛杉矶20201128天气数据");
        Connection connection = RabbitUtils.getConnection();
        Channel channel = connection.createChannel();
        Iterator<Map.Entry<String, String>> itr = area.entrySet().iterator();
        while (itr.hasNext()) {
            Map.Entry<String, String> me = itr.next();
            //第一个参数交换机名字   第二个参数作为 消息的routing key
            channel.basicPublish(RabbitConstant.EXCHANGE_WEATHER_TOPIC, me.getKey(), null, me.getValue().getBytes());
        }
        channel.close();
        connection.close();
    }
}

3.消费者BiaDu

import com.baiqi.rabbitmq.utils.RabbitConstant;
import com.baiqi.rabbitmq.utils.RabbitUtils;
import com.rabbitmq.client.*;
import java.io.IOException;
/**
 * 消费者
 */
public class BiaDu {
    public static void main(String[] args) throws IOException {
        Connection connection = RabbitUtils.getConnection();
        final Channel channel = connection.createChannel();
        channel.queueDeclare(RabbitConstant.QUEUE_BAIDU, false, false, false, null);
        //queueBind用于将队列与交换机绑定
        //参数1：队列名 参数2：交互机名  参数三：路由key
        channel.queueBind(RabbitConstant.QUEUE_BAIDU, RabbitConstant.EXCHANGE_WEATHER_TOPIC, "*.*.*.20201127");
       // channel.queueBind(RabbitConstant.QUEUE_BAIDU, RabbitConstant.EXCHANGE_WEATHER_ROUTING, "china.hebei.shijiazhuang.20201128");
        channel.basicQos(1);
        channel.basicConsume(RabbitConstant.QUEUE_BAIDU , false , new DefaultConsumer(channel){
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
                System.out.println("百度天气收到气象信息：" + new String(body));
                channel.basicAck(envelope.getDeliveryTag() , false);
            }
        });
    }
}

4.消费者Sina

import com.baiqi.rabbitmq.utils.RabbitConstant;
import com.baiqi.rabbitmq.utils.RabbitUtils;
import com.rabbitmq.client.*;
import java.io.IOException;
/**
 * 消费者
 */
public class Sina {
    public static void main(String[] args) throws IOException {
        //获取TCP长连接
        Connection connection = RabbitUtils.getConnection();
        //获取虚拟连接
        final Channel channel = connection.createChannel();
        //声明队列信息
        channel.queueDeclare(RabbitConstant.QUEUE_SINA, false, false, false, null);
        //指定队列与交换机以及routing key之间的关系
        channel.queueBind(RabbitConstant.QUEUE_SINA, RabbitConstant.EXCHANGE_WEATHER_TOPIC, "us.#");
        channel.basicQos(1);
        channel.basicConsume(RabbitConstant.QUEUE_SINA , false , new DefaultConsumer(channel){
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
                System.out.println("新浪天气收到气象信息：" + new String(body));
                channel.basicAck(envelope.getDeliveryTag() , false);
            }
        });
    }
}

5.运行结果：