RabbitMQ工作模式-工作队列-Toy模板网

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官网关于工作模式的解释地址：https://www.rabbitmq.com/getstarted.html

Work Queue（工作队列）

生产者发消息，启动多个消费者来消费消息，每个消费者仅消费部分消息，可达到负载均衡的效果。

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创建生产者

import com.rabbitmq.client.BuiltinExchangeType;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import java.nio.charset.StandardCharsets;

public class Product {


    public static void main(String[] args) throws Exception {
        ConnectionFactory factory = new ConnectionFactory();

        factory.setUri("amqp://root:123456@node1:5672/%2f");

        //创建连接和队列
        Connection connection = factory.newConnection();
        Channel channel = connection.createChannel();


        //声明队列,持久化，不自动删除
        channel.queueDeclare("qu.wk", true, false, false, null);

        //声明交换机,消息持久化，不自动删除
        channel.exchangeDeclare("ex.wk", BuiltinExchangeType.DIRECT, true, false, null);

        //队列和交换机绑定
        channel.queueBind("qu.wk", "ex.wk", "rk.wq");

        for (int i = 0; i < 20; i++) {
            //发送消息
            channel.basicPublish("ex.wk",
                    "rk.wq", null, ("data msg " + i).getBytes(StandardCharsets.UTF_8));
        }


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

}

创建消费者

import com.rabbitmq.client.BuiltinExchangeType;
import com.rabbitmq.client.CancelCallback;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.DeliverCallback;
import com.rabbitmq.client.Delivery;
import java.io.IOException;
import java.nio.charset.StandardCharsets;

public class Consumer {

    public static void main(String[] args) throws Exception {
        ConnectionFactory factory = new ConnectionFactory();

        factory.setUri("amqp://root:123456@node1:5672/%2f");

        Connection connection = factory.newConnection();
        Channel channel = connection.createChannel();

        //声明队列,持久化，不自动删除
        channel.queueDeclare("qu.wk", true, false, false, null);

        channel.basicConsume("qu.wk", new DeliverCallback() {
            @Override
            public void handle(String consumerTag, Delivery message) throws IOException {
                System.out.println("收到的消息：" + new String(message.getBody(), StandardCharsets.UTF_8));
            }
        }, new CancelCallback() {
            @Override
            public void handle(String consumerTag) throws IOException {
                System.out.println("cancel的消息:" + consumerTag);
            }
        });
    }
}