RabbitMQ 几种工作模式---（四）Routing

生产者类：

package com..routing;


import com..utils.RabbitConstant;
import com..utils.RabbitUtils;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;

import java.io.IOException;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.concurrent.TimeoutException;

public class WeatherBureau {
    public static void main(String[] args) throws IOException, TimeoutException {
        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.changsha.20201127", "中国湖南长沙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();
            //Routing key 第二个参数相当于数据筛选的条件
            channel.basicPublish(RabbitConstant.EXCHANGE_WEATHER_ROUTING,me.getKey() , null , me.getValue().getBytes());
        }

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

消费者1（百度）：

package com..routing;


import com..utils.RabbitConstant;
import com..utils.RabbitUtils;
import com.rabbitmq.client.*;

import java.io.IOException;

public class Baidu {
    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_ROUTING, "china.hunan.changsha.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);
            }
        });
    }
}

后台打印信息：

消费者2（新浪）：

package com..routing;


import com..utils.RabbitConstant;
import com..utils.RabbitUtils;
import com.rabbitmq.client.*;

import java.io.IOException;

public class Sina {
    public static void main(String[] args) throws IOException {
        Connection connection = RabbitUtils.getConnection();
        final Channel channel = connection.createChannel();
        channel.queueDeclare(RabbitConstant.QUEUE_SINA, false, false, false, null);

        channel.queueBind(RabbitConstant.QUEUE_SINA, RabbitConstant.EXCHANGE_WEATHER_ROUTING, "us.cal.lsj.20201127");
        channel.queueBind(RabbitConstant.QUEUE_SINA, RabbitConstant.EXCHANGE_WEATHER_ROUTING, "china.hubei.wuhan.20201127");
        channel.queueBind(RabbitConstant.QUEUE_SINA, RabbitConstant.EXCHANGE_WEATHER_ROUTING, "us.cal.lsj.20201128");
        channel.queueBind(RabbitConstant.QUEUE_SINA, RabbitConstant.EXCHANGE_WEATHER_ROUTING, "china.henan.zhengzhou.20991012");

        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("腾讯天气收到气象信息：" + new String(body));
                channel.basicAck(envelope.getDeliveryTag() , false);
            }
        });
    }
}

后台打印信息：