RabbitMQ之Java實現HelloWorld

本文參考至官網：https://www.rabbitmq.com/getstarted.html

生產者：

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) {
        //創建連接工廠
        ConnectionFactory factory = new ConnectionFactory();
        //設置主機名（IP地址） 這裏沒有這是端口號，是因爲默認採用的默認端口號5672
        factory.setHost("localhost");
        try {
            //創建連接
            Connection connection = factory.newConnection();
            //創建信道
            Channel channel = connection.createChannel();
            //聲明隊列
            channel.queueDeclare(QUEUE_NAM, false, false, false, null);
            String message = "Hello World";
            //發佈消息
            channel.basicPublish("", QUEUE_NAM, null, message.getBytes());
            System.out.println("[x] Sent '" + message + "'" );
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

消費者：

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);
            // 創建默認消費者
            Consumer consumer = new DefaultConsumer(channel) {
                public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
                    // 將獲取的消息打印至控制檯
                    System.out.println(new String(body));
                }
            };
            //監聽消息
            channel.basicConsume(QUEUE_NAME, consumer);
            System.out.println("[*] Waiting for messages, To exit press Ctrl + c");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

 

先執行生產者， 在界面看一看到新建的隊列 "Hello" 其中已經又一條消息準備好了！

執行消費者，可以看到隊列 "Hello" 中的消息已被消費！

消費者控制檯輸出：

 

Hello World 程序Over!!!