java实现MQ消息收发两种方式

定义：

消息队列（MQ）是一种应用程序对应用程序的通信方法。应用程序通过写和检索出入列队的针对应用程序的数据（消息）来通信，而无需专用连接来链接它们。简单理解：蓝牙配对

jar包依赖：

<!-- 加入mq消息依赖包 -->
  <dependency>
         <groupId>com.rabbitmq</groupId>
         <artifactId>amqp-client</artifactId>
         <version>3.0.4</version>
  </dependency>

方式一：

（发）

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 = "qq";  
 
    public static void main(String[] args) throws IOException {
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("hostname");
        factory.setUsername("username");
        factory.setPassword("password");
        factory.setPort(5672);
        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();
    }
}

(收)

import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.QueueingConsumer;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
 
public class Reqv {
    private final static String QUEUE_NAME = "qq";
 
    public static void main(String[] argv) throws Exception {
        ConnectionFactory factory = new ConnectionFactory();
 
        factory.setUsername("username");
        factory.setPassword("password");
        factory.setHost("hostname");
        factory.setVirtualHost("/");
        factory.setPort(5672);
        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 + "'");
        }
    }
}

方式二：

（发）

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
 
public class Send2 {
 
        private  static  final String EXCHANGE_NAME = "qq" ;
 
        public  static  void  main (String [] argv) throws java.io.IOException {
 
            ConnectionFactory factory = new ConnectionFactory();
            factory.setHost("hostname");
            factory.setUsername("username");
            factory.setPassword("password");
            factory.setPort(5672);
            Connection connection = factory.newConnection();
            Channel channel = connection.createChannel();
 
            channel.exchangeDeclare(EXCHANGE_NAME,"fanout",true);
 
            String message = "hello world";
 
            channel.basicPublish(EXCHANGE_NAME,"",null,message.getBytes());
            System.out.println("[x] Sent'" + message + "'");
 
            channel.close();
            connection.close();
        }

（收）

import java.io.IOException;import com.alibaba.fastjson.JSONObject;
import com.rabbitmq.client.AMQP;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.Consumer;
import com.rabbitmq.client.DefaultConsumer;
import com.rabbitmq.client.Envelope;
 
public  class  Reqv2  {
      private  static  final String EXCHANGE_NAME = "qq" ;public  static  void  main (String [] argv) throws Exception {
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("hostname");
 
        factory.setUsername("username");
        factory.setPassword("password");
        factory.setPort(5672);
 
        Connection connection = factory.newConnection();
        Channel channel = connection.createChannel();
 
        channel.exchangeDeclare(EXCHANGE_NAME,"fanout",true);
        String queueName = channel.queueDeclare().getQueue();
        channel.queueBind(queueName,EXCHANGE_NAME,"");
 
        System.out.println("[*]等待消息。退出按CTRL + C");
 
        Consumer consumer = new DefaultConsumer(channel){
           @Override
          public  void  handleDelivery (String consumerTag,Envelope envelope,AMQP.BasicProperties properties,byte[] body) throws IOException {
            String message = new String(body,"UTF-8");
            System.out.println("[x] Received'" + message + "'");
 
          }
        };
        channel.basicConsume(queueName,true,consumer);
      }
    }

参考网址：

http://www.rabbitmq.com/tutorials/tutorial-one-java.html