RabbitMQ初体验

1.Docker安装RabbitMQ

• 拉取镜像： docker pull rabbitmq:management ，management带有控制台
• 创建容器： docker run --name rabbitmq -d -p 15672:15672 -p 5672:5672 rabbitmq:management
• 访问控制台： http://ip:15672，用户名和密码默认为：guest

2.简单使用

Maven：

<!-- https://mvnrepository.com/artifact/com.rabbitmq/amqp-client -->
<dependency>
    <groupId>com.rabbitmq</groupId>
    <artifactId>amqp-client</artifactId>
    <version>5.9.0</version>
</dependency>

生产者：

import com.rabbitmq.client.*;

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

public class Main {
    public static void main(String[] args) throws IOException, TimeoutException {
        String QUEUE_NAME = "testQueue";
        String EXCHANGE_NAME = "test-exchange";
        String ROUTING_KEY = "TEST";
        String MESSAGE = "123";

        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("你的RabbitMQ主机地址");
        factory.setPort(5672);
        factory.setVirtualHost("/");//虚拟路径，默认存在 “/”
        factory.setUsername("guest");
        factory.setPassword("guest");
        //获取连接
        Connection connection = factory.newConnection();
        //创建通道
        final Channel channel = connection.createChannel();
        //声明交换机
        channel.exchangeDeclare(EXCHANGE_NAME, "direct", true);
        //声明队列
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);
        //绑定队列
        channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, ROUTING_KEY);
        //发布
        channel.basicPublish(EXCHANGE_NAME, ROUTING_KEY, null, MESSAGE.getBytes());

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

消费者：

import com.rabbitmq.client.*;

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

public class Main {
    public static void main(String[] args) throws IOException, TimeoutException {
        String QUEUE_NAME = "testQueue";
        
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("你的RabbitMQ主机地址");
        factory.setPort(5672);
        factory.setVirtualHost("/");//虚拟路径，默认存在 “/”
        factory.setUsername("guest");
        factory.setPassword("guest");
        //获取连接
        Connection connection = factory.newConnection();
        //创建通道
        final Channel channel = connection.createChannel();

        while (true) {
            channel.basicConsume(QUEUE_NAME, false, "", new DefaultConsumer(channel) {
                @Override
                public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
                    channel.basicAck(envelope.getDeliveryTag(), false);
                    System.out.println(envelope.getDeliveryTag());
                    System.out.println("消息内容："+new String(body,"UTF-8"));
                }
            });
        }
    }
}