消息发送流程

1.生产者把消息发送给交换机

2.交换机把消息发送给每个绑定的临时队列

3.消费者通过队列消费消息（每一个消费者都绑定一个临时队列）

引入依赖

<!--    引入rabbitmq依赖-->
    <dependency>
      <groupId>com.rabbitmq</groupId>
      <artifactId>amqp-client</artifactId>
      <version>5.7.2</version>
    </dependency>

代码编写

1.mq获取连接的工具类

package utils;

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


public class RabbitMqUtils {

    private static ConnectionFactory connectionFactory;

    static {
        connectionFactory = new ConnectionFactory();
        connectionFactory.setHost("192.168.xxx.xxx");//服务器的ip
        connectionFactory.setPort(5672);//访问端口号
        connectionFactory.setVirtualHost("/lln");//虚拟主机名称
        connectionFactory.setUsername("lln");//账号
        connectionFactory.setPassword("123");//密码
    }

    //提供连接对象的方法
    public static Connection getConnection(){

        try{
            return connectionFactory.newConnection();
        }catch (Exception e){
            e.printStackTrace();
        }
        return null;
    }

    //关闭通道和关闭连接工具的方法
    public static void closeConnectionAndChanel(Channel channel,Connection connection){
        try {
            if (channel!=null){
                channel.close();
            }
            if (connection!=null){
                connection.close();
            }
        }catch (Exception e){
            e.printStackTrace();
        }

    }
}

2.生产者

package fanout;

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

import java.io.IOException;


public class Provider {
    public static void main(String[] args) throws IOException {
        //获取连接
        Connection connection = RabbitMqUtils.getConnection();
        Channel channel = connection.createChannel();

        //将通道声明指定的交换机
        //参数1：交换机名称，参数2：交换机类型  fanout为广播类型
        channel.exchangeDeclare("logs","fanout");

        //发送消息
        channel.basicPublish("logs","",null,"fanout type message".getBytes());

        RabbitMqUtils.closeConnectionAndChanel(channel,connection);
    }
}

3.消费者（复制多个即可）

package fanout;

import com.rabbitmq.client.*;
import utils.RabbitMqUtils;

import java.io.IOException;


public class Consumer1 {
    public static void main(String[] args) throws IOException {
        Connection connection = RabbitMqUtils.getConnection();
        Channel channel = connection.createChannel();

        //通道绑定交换机
        channel.exchangeDeclare("logs","fanout");

        //临时队列
        String queueName = channel.queueDeclare().getQueue();

        //绑定交换机和队列
        channel.queueBind(queueName,"logs","");

        //消费消息
        channel.basicConsume(queueName,true,new DefaultConsumer(channel){
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
                System.out.println("消费者1："+new String(body));
            }
        });
    }
}