1.6 RabbitMq工作模式之PubSub模式

Pub/Sub 订阅模式
1. 模式说明




1.添加好交换机weather

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.Scanner;
/**
 * 发布者
 */
public class WeatherBureau {
    public static void main(String[] args) throws Exception {
        Connection connection = RabbitUtils.getConnection();
        String input = new Scanner(System.in).next();
        Channel channel = connection.createChannel();
        //第一个参数交换机名字   其他参数和之前的一样
        channel.basicPublish(RabbitConstant.EXCHANGE_WEATHER, "", null, input.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 {
        //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_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（暂时用不到)
        channel.queueBind(RabbitConstant.QUEUE_BAIDU, RabbitConstant.EXCHANGE_WEATHER, "");
        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("新浪天气收到气象信息：" + 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);
        //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（暂时用不到)
        channel.queueBind(RabbitConstant.QUEUE_SINA, RabbitConstant.EXCHANGE_WEATHER, "");
        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：