java rabbitMQ demo

 rabbitMQ是一個在AMQP基礎上完整的，可服用的企業消息系統。他遵循Mozilla Public License 開源協議。

  關於amqp可參考http://www.oschina.net/p/rabbitmq/

 rabbitmq是一個消費的代理；通過生產者客戶端生產一個信息，轉送給消費者客戶端;在這個傳輸過程中，根據你的需要可以經過路由、緩衝、持久化來得到這個消息。

  先通過一個例子開始：通過rabbitmq輸出"Hello World!"

 

 

其中P代表生產者、C表示消費者、中間紅色部分代表消息隊列

 

生產者客戶端的發送消息程序如下：

 

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();
    }
}

運行結果如下：

[x] Sent 'Hello World!'

 

消費者客戶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 + "'");
        }
    }
}

 運行程序得到的結果如下：

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

 如果消費者出現“[x] Received 'Hello World!'”說明已接收到此消息信息。