RabbitMQ--入门demo

1、安装RabbitMQ

安装好后，web页面访问：http://192.168.40.240:15672

2、添加依赖jar包

<dependency>
　　<groupId>org.springframework.amqp</groupId>
　　<artifactId>spring-rabbit</artifactId>
　　<version>1.4.6.RELEASE</version>
</dependency>

<dependency>
　　<groupId>com.rabbitmq</groupId>
　　<artifactId>amqp-client</artifactId>
　　<version>2.2.0</version>
</dependency>

3、生产者

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

	public static void main(String[] args) throws IOException {
		ConnectionFactory factory = new ConnectionFactory();
		factory.setHost("192.168.40.240");
		factory.setUsername("admin");
		factory.setPassword("admin");
		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();
	}
}

4、消费者

public class Consumer{

	private final static String QUEUE_NAME = "hello";

	public static void main(String[] argv) throws Exception {
		ConnectionFactory factory = new ConnectionFactory();

		factory.setUsername("admin");
		factory.setPassword("admin");
		factory.setHost("192.168.40.240");
		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 + "'");
		}
	}
}

5、启动生产者观察MQ管理页面

5、启动消费者观察MQ管理页面

demo2

public class Producter {
	public final static String QUEUE_NAME = "hello";

	public static void main(String[] args) throws IOException, TimeoutException {
		//创建连接工厂
		ConnectionFactory factory = new ConnectionFactory();
		//设置RabbitMQ相关信息
		factory.setHost("192.168.40.240");
		factory.setPort(5672);
		factory.setUsername("admin");
		factory.setPassword("admin");
		//创建一个新的连接
		Connection connection = factory.newConnection();
		//创建一个通道
		Channel channel = connection.createChannel();
		//  声明一个队列
		channel.queueDeclare(QUEUE_NAME, false, false, false, null);
		String message = "Hello RabbitMQ";
		//发送消息到队列中
		channel.basicPublish("", QUEUE_NAME, null, message.getBytes("UTF-8"));
		System.out.println("Producer Send +'" + message + "'");
		//关闭通道和连接
		channel.close();
		connection.close();
	}
}

public class Consumer{

	private final static String QUEUE_NAME = "hello";//队列名称
	private final static boolean DUEABLE = false;//消息持久化
	private final static boolean ACK = false;//开启/关闭应答

	public static void main(String[] args) throws IOException, TimeoutException {
		// 创建连接工厂
		ConnectionFactory factory = new ConnectionFactory();
		//设置RabbitMQ地址
		factory.setHost("192.168.40.240");
		factory.setPort(5672);
		factory.setUsername("admin");
		factory.setPassword("admin");
		//创建一个新的连接
		Connection connection = factory.newConnection();
		//创建一个通道
		final Channel channel = connection.createChannel();
		//每次接受一条消息
		channel.basicQos(1);
		//声明要关注的队列
		channel.queueDeclare(QUEUE_NAME, DUEABLE, false, false, null);
		System.out.println("Customer Waiting Received messages");
		//DefaultConsumer类实现了Consumer接口，通过传入一个频道，
		//告诉服务器我们需要那个频道的消息，如果频道中有消息，就会执行回调函数handleDelivery
		DefaultConsumer 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("Customer Received '" + message + "'");

				// 处理业务

				//应答
				channel.basicAck(envelope.getDeliveryTag(), false);
			}
		};
		//回复队列应答 -- RabbitMQ中的消息确认机制
		channel.basicConsume(QUEUE_NAME, ACK, consumer);
	}
}