RabbitMQ

pom.xml

    4.0.0

    org.example
    RabbitMQ
    1.0-SNAPSHOT

    
        8
        8
    

    
        
            com.rabbitmq
            amqp-client
            5.6.0
        

        
        
            org.slf4j
            slf4j-log4j12
            1.7.21
            test
        

        
        
            log4j
            log4j
            1.2.17
        
    

Rabbit工具类：RabbitMQUtils

在提供者和消费者中有一段相同代码，可以抽取封装成工具类

package com.example.newRabbit;

import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;

import java.io.IOException;
import java.util.concurrent.TimeoutException;

public class RabbitMQUtils {

    public static Connection getConnection() throws IOException, TimeoutException {
        ConnectionFactory connectionFactory = new ConnectionFactory(); //获取创建连接的工厂
        connectionFactory.setHost("localhost"); //设置服务主机地址
        connectionFactory.setPort(5672); //设置端口，默认5672
        connectionFactory.setVirtualHost("/"); //设置虚拟主机地址
        connectionFactory.setUsername("chocoMoss"); //设置用户名
        connectionFactory.setPassword("123456"); //设置密码
        Connection connection = connectionFactory.newConnection(); //创建连接
        return connection;
    }
}

提供者：Rabbit_provider

queueDeclare 里的参数1 和 basicPublish 的参数2要相同

package com.example.newRabbit;

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

import java.io.IOException;
import java.util.concurrent.TimeoutException;

public class Rabbit_provider {
    

    public static void main(String[] args) throws IOException, TimeoutException {

        Connection connection = RabbitMQUtils.getConnection();

        //创建通道
        Channel channel = connection.createChannel();

        
        channel.queueDeclare("chocoMoss",true,false,false,null);

        //创建消息
        String message= "hello world";

        

        channel.basicPublish("","chocoMoss",null,message.getBytes());

        //关闭资源
        channel.close();
        connection.close();
    }
}

消费者：Rabbit_consumer

package com.example.newRabbit;

import com.rabbitmq.client.*;

import java.io.IOException;
import java.util.concurrent.TimeoutException;

public class Rabbit_consumer {
    
    public static void main(String[] args) throws IOException, TimeoutException {

        Connection connection = RabbitMQUtils.getConnection();

        //创建通道
        Channel channel = connection.createChannel();

        //创建队列
        channel.queueDeclare("chocoMoss",true,false,false,null);

        //创建消费者，并设置消息处理
        DefaultConsumer defaultConsumer = new DefaultConsumer(channel){
            
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {

                //路由的key
                String routingKey = envelope.getRoutingKey();

                //获取交换机信息
                String exchange = envelope.getExchange();

                //获取消息ID
                long deliveryTag = envelope.getDeliveryTag();

                //获取消息信息
                String message = new String(body,"UTF-8");

                System.out.println("routingKey:"+routingKey+",exchange:"+exchange+",deliveryTag:"+deliveryTag+",message:"+message);
            }
        };

        
        channel.basicConsume("chocoMoss",true,defaultConsumer);

        //关闭资源（不建议关闭，建议一直监听）
//        channel.close();
//        connection.close();

    }
}