RabbitMQ部署

RabbitMQ是一种消息队列，用来进行消息之间的发送

拉取RabbitMQ镜像，启动容器

docker pull rabbitmq:3-management

docker run \
 -e RABBITMQ_DEFAULT_USER=root \ #设置环境变量，账号，密码
 -e RABBITMQ_DEFAULT_PASS=123 \
 --name mq \ #起名
 --hostname mq1 \ #配置主机名，集群部署时候有用，非集群部署可不配
 -p 15672:15672 \ #管理平台端口
 -p 5672:5672 \ #消息通信端口
 -d \
 rabbitmq:3-management

 

消息发布端和消费端需要引入依赖

<!--AMQP依赖，包含RabbitMQ-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-amqp</artifactId>
</dependency>

消息发布端

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import org.junit.Test;

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

public class PublisherTest {
    @Test
    public void testSendMessage() throws IOException, TimeoutException {
        // 1.建立连接
        ConnectionFactory factory = new ConnectionFactory();
        // 1.1.设置连接参数，分别是：主机名、端口号、vhost、用户名、密码
        // 请确保消息发布端和消费端的连接参数一致，账户拥有虚拟主机的使用权
        factory.setHost("192.168.230.100");
        factory.setPort(5672);
        factory.setVirtualHost("/");
        factory.setUsername("root");
        factory.setPassword("123");
        // 1.2.建立连接
        Connection connection = factory.newConnection();

        // 2.创建通道Channel
        Channel channel = connection.createChannel();

        // 3.创建队列
        String queueName = "simple.queue";
        channel.queueDeclare(queueName, false, false, false, null);

        // 4.发送消息
        String message = "hello, rabbitmq!";
        channel.basicPublish("", queueName, null, message.getBytes());
        System.out.println("发送消息成功：【" + message + "】");

        // 5.关闭通道和连接
        channel.close();
        connection.close();

    }
}

消息消费端

import com.rabbitmq.client.*;

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

public class ConsumerTest {

    public static void main(String[] args) throws IOException, TimeoutException {
        // 1.建立连接
        ConnectionFactory factory = new ConnectionFactory();
        // 1.1.设置连接参数，分别是：主机名、端口号、vhost、用户名、密码
        // 请确保消息发布端和消费端的连接参数一致，账户拥有虚拟主机的使用权
        factory.setHost("192.168.230.100");
        factory.setPort(5672);
        factory.setVirtualHost("/");
        factory.setUsername("root");
        factory.setPassword("123");
        // 1.2.建立连接
        Connection connection = factory.newConnection();

        // 2.创建通道Channel
        Channel channel = connection.createChannel();

        // 3.创建队列
        String queueName = "simple.queue";
        channel.queueDeclare(queueName, false, false, false, null);

        // 4.订阅消息
        channel.basicConsume(queueName, true, new DefaultConsumer(channel){
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope,
                                       AMQP.BasicProperties properties, byte[] body) throws IOException {
                // 5.处理消息
                String message = new String(body);
                System.out.println("接收到消息：【" + message + "】");
            }
        });
        System.out.println("等待接收消息。。。。");
    }
}