RabbitMQ路由模式

路由模式

一个生产者，发送消息
每个消费者，都有一个独立的队列

消息发送到交换机，交换机发送到每个队列
根据key，是否相等，来接收消息
这里写图片描述

Send

生产者

package cn.itcast.rabbitmq.routing;

import cn.itcast.rabbitmq.util.ConnectionUtil;

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;

public class Send {

    private final static String EXCHANGE_NAME = "test_exchange_direct";

    public static void main(String[] argv) throws Exception {
        // 获取到连接以及mq通道
        Connection connection = ConnectionUtil.getConnection();
        Channel channel = connection.createChannel();

        // 声明exchange
        channel.exchangeDeclare(EXCHANGE_NAME, "direct");

        // 消息内容
        String message = "删除商品，id=1000";
        channel.basicPublish(EXCHANGE_NAME, "delete", null, message.getBytes());
        System.out.println(" 后台系统 '" + message + "'");

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

Recv

消费者1

package cn.itcast.rabbitmq.routing;

import cn.itcast.rabbitmq.util.ConnectionUtil;

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.QueueingConsumer;

public class Recv {

    private final static String QUEUE_NAME = "test_queue_direct1";

    private final static String EXCHANGE_NAME = "test_exchange_direct";

    public static void main(String[] argv) throws Exception {

        // 获取到连接以及mq通道
        Connection connection = ConnectionUtil.getConnection();
        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, "update");
        channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "delete");

        // 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
        QueueingConsumer consumer = new QueueingConsumer(channel);
        // 监听队列，手动返回完成
        channel.basicConsume(QUEUE_NAME, false, consumer);

        // 获取消息
        while (true) {
            QueueingConsumer.Delivery delivery = consumer.nextDelivery();
            String message = new String(delivery.getBody());
            System.out.println(" 前台系统： '" + message + "'");
            Thread.sleep(10);

            channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
        }
    }
}

Recv2

消费者2

package cn.itcast.rabbitmq.routing;

import cn.itcast.rabbitmq.util.ConnectionUtil;

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.QueueingConsumer;

public class Recv2 {

    private final static String QUEUE_NAME = "test_queue_direct2";

    private final static String EXCHANGE_NAME = "test_exchange_direct";

    public static void main(String[] argv) throws Exception {

        // 获取到连接以及mq通道
        Connection connection = ConnectionUtil.getConnection();
        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, "insert");
        channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "update");
        channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, "delete");

        // 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
        QueueingConsumer consumer = new QueueingConsumer(channel);
        // 监听队列，手动返回完成
        channel.basicConsume(QUEUE_NAME, false, consumer);

        // 获取消息
        while (true) {
            QueueingConsumer.Delivery delivery = consumer.nextDelivery();
            String message = new String(delivery.getBody());
            System.out.println(" 搜索系统： '" + message + "'");
            Thread.sleep(10);

            channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
        }
    }
}