RabbitMQ 创建生产者与消费者

创建生产者步骤

1. 创建工厂 connectionFactory
2. 获取连接
3. 通过connection创建一个channel
4. 发布消息
   4.1. 指定 exchange（交换机）
   4.2. 指定 routing key（路由规则，路由到哪一个queue）

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import java.io.IOException;
import java.util.concurrent.TimeoutException;

/**
 * @author wx
 * @date 2021-01-10
 */
public class producer {
    
    

    public static void main(String[] args) throws IOException, TimeoutException {
    
    
        //1.创建工厂
        ConnectionFactory connectionFactory = new ConnectionFactory();
        connectionFactory.setHost("localhost");
        connectionFactory.setPort(5672);
        connectionFactory.setUsername("guest");
        connectionFactory.setPassword("guest");
        //2.获取连接
        Connection connection = connectionFactory.newConnection();
        //3.通过connection创建一个channel
        Channel chennel = connection.createChannel();
        //4.发布消息
        for(int i = 0; i < 5; i++){
    
    
            String msg = "hello rabbitmq";
            //1.exchange  2.routing key
            //默认交换器隐式绑定到每个队列，其路由键等于队列名. 如果没有队列名,则会被删除
            chennel.basicPublish("", "test001", null, msg.getBytes());
        }
        chennel.close();
        connection.close();
    }
}

创建消费者步骤

1. 创建工厂 connectionFactory
2. 获取连接
3. 通过connection创建一个channel
4. 声明一个队列（queue）
5. 创建消费者
6. 设置channel
7. 获取消息

import com.rabbitmq.client.*;
import javax.security.auth.callback.Callback;
import java.io.IOException;
import java.util.concurrent.TimeoutException;

/**
 * @author wx
 * @date 2021-01-10
 */
public class Consumer {
    
    

    public static void main(String[] args) throws IOException, TimeoutException, InterruptedException {
    
    
        //1,创建工厂
        ConnectionFactory connectionFactory = new ConnectionFactory();
        connectionFactory.setHost("localhost");
        connectionFactory.setPort(5672);
        connectionFactory.setUsername("guest");
        connectionFactory.setPassword("guest");
        //2,获取连接
        Connection connection = connectionFactory.newConnection();
        //3,通过connection创建一个channel
        Channel channel = connection.createChannel();
        //4,声明一个队列
        String queueName = "test001";
        channel.queueDeclare(queueName, true, false, false, null);
        //5,创建消费者//
        QueueingConsumer queueingConsumer = new QueueingConsumer(channel);
        //6,设置channel
        channel.basicConsume(queueName, true, queueingConsumer);
        //7,获取消息
        while (true){
    
    
            QueueingConsumer.Delivery delivery = queueingConsumer.nextDelivery();
            String msg = new String(delivery.getBody());
            System.out.println(msg);
        }
    }
}