RabbitMQ之Java实现HelloWorld

本文参考至官网：https://www.rabbitmq.com/getstarted.html

生产者：

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

public class Send {

    private final static String QUEUE_NAM = "Hello";

    public static void main(String[] args) {
        //创建连接工厂
        ConnectionFactory factory = new ConnectionFactory();
        //设置主机名（IP地址） 这里没有这是端口号，是因为默认采用的默认端口号5672
        factory.setHost("localhost");
        try {
            //创建连接
            Connection connection = factory.newConnection();
            //创建信道
            Channel channel = connection.createChannel();
            //声明队列
            channel.queueDeclare(QUEUE_NAM, false, false, false, null);
            String message = "Hello World";
            //发布消息
            channel.basicPublish("", QUEUE_NAM, null, message.getBytes());
            System.out.println("[x] Sent '" + message + "'" );
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

消费者：

import com.rabbitmq.client.*;

import java.io.IOException;

public class Receive {

    private final static String QUEUE_NAME = "Hello";

    public static void main(String[] args) {
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("127.0.0.1");
        try {
            Connection connection = factory.newConnection();
            Channel channel = connection.createChannel();
            channel.queueDeclare(QUEUE_NAME, false, false, false, null);
            // 创建默认消费者
            Consumer consumer = new DefaultConsumer(channel) {
                public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
                    // 将获取的消息打印至控制台
                    System.out.println(new String(body));
                }
            };
            //监听消息
            channel.basicConsume(QUEUE_NAME, consumer);
            System.out.println("[*] Waiting for messages, To exit press Ctrl + c");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

先执行生产者，在界面看一看到新建的队列 "Hello" 其中已经又一条消息准备好了！

RabbitMQ之Java实现HelloWorld

执行消费者，可以看到队列 "Hello" 中的消息已被消费！

RabbitMQ之Java实现HelloWorld

消费者控制台输出：

RabbitMQ之Java实现HelloWorld

Hello World 程序Over!!!