RabbitMQ 几种工作模式---（五）Topics

 

 

生产者类：

package com..topic;


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.hebei.shijiazhuang.20991011", "中国河北石家庄20991011天气数据");
        area.put("china.shandong.qingdao.20991011", "中国山东青岛20991011天气数据");
        area.put("china.henan.zhengzhou.20991011", "中国河南郑州20991011天气数据");
        area.put("us.cal.la.20991011", "美国加州洛杉矶20991011天气数据");

        area.put("china.hebei.shijiazhuang.20991012", "中国河北石家庄20991012天气数据");
        area.put("china.shandong.qingdao.20991012", "中国山东青岛20991012天气数据");
        area.put("china.henan.zhengzhou.20991012", "中国河南郑州20991012天气数据");
        area.put("us.cal.la.20991012", "美国加州洛杉矶20991012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_TOPIC,me.getKey() , null , me.getValue().getBytes());
        }

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

 

 

消费者1（百度）：

package com..topic;


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_TOPIC, "*.*.*.20991011");
        //channel.queueUnbind(RabbitConstant.QUEUE_BAIDU, RabbitConstant.EXCHANGE_WEATHER_TOPIC, "*.*.*.20991011");
        //*.hebei.*.*
        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("百度收到信息：" + new String(body));
                channel.basicAck(envelope.getDeliveryTag() , false);
            }
        });
    }
}

 

后台打印信息：

 

 

 

消费者2（新浪）：

package com..topic;


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_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("新浪收到信息：" + new String(body));
                channel.basicAck(envelope.getDeliveryTag() , false);
            }
        });
    }
}

 

后台打印信息：