java实现rabbitMQ消息收发方式

定义：消息队列（MQ）是一种应用程序对应用程序的通信方法是AMQP协议。

jar包依赖：

<dependency>
         <groupId>com.rabbitmq</groupId>
         <artifactId>amqp-client</artifactId>
         <version>3.0.4</version>
  </dependency>

发送消息:

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();  
    }  
}

接收消息:

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 + "'");
        }
    }
}