rabbitmq学习1:hello world

rabbitMQ是一个在AMQP基础上完整的，可服用的企业消息系统。他遵循Mozilla Public License 开源协议。

  关于amqp可参考http://www.oschina.net/p/rabbitmq/

 rabbitmq是一个消费的代理；通过生产者客户端生产一个信息，转送给消费者客户端;在这个传输过程中，根据你的需要可以经过路由、缓冲、持久化来得到这个消息。

  先通过一个例子开始：通过rabbitmq输出"Hello World!"

 

 

其中P代表生产者、C表示消费者、中间红色部分代表消息队列

 

生产者客户端的发送消息程序如下：

 

package com.abin.test;

import java.io.IOException;

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

public class Send {
    private final static String QUEUE_NAME = "hello";

    public static void main(String[] args) throws IOException {
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("localhost");
        Connection connection = factory.newConnection();
        Channel channel = connection.createChannel();

        channel.queueDeclare(QUEUE_NAME, false, false, false, null);
        String message = "Hello World!";
        channel.basicPublish("", QUEUE_NAME, null, message.getBytes());
        System.out.println(" [x] Sent '" + message + "'");

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

运行结果如下：

[x] Sent 'Hello World!'

 

消费者客户端接收消息程序如下：

 

package com.abin.test;

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

public class Reqv {
    private final static String QUEUE_NAME = "hello";

    public static void main(String[] argv) throws Exception {

        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("localhost");
        Connection connection = factory.newConnection();
        Channel channel = connection.createChannel();

        channel.queueDeclare(QUEUE_NAME, false, false, false, null);
        System.out.println(" [*] Waiting for messages. To exit press CTRL+C");

        QueueingConsumer consumer = new QueueingConsumer(channel);
        channel.basicConsume(QUEUE_NAME, true, consumer);

        while (true) {
            QueueingConsumer.Delivery delivery = consumer.nextDelivery();
            String message = new String(delivery.getBody());
            System.out.println(" [x] Received '" + message + "'");
        }
    }
}

 运行程序得到的结果如下：

[*] Waiting for messages. To exit press CTRL+C
[x] Received 'Hello World!'

 如果消费者出现“[x] Received 'Hello World!'”说明已接收到此消息信息。