Java操作RabbitMQ

简单队列

功能：一个生产者P发送消息到队列Q,一个消费者C接收

P表示为生产者 、C表示为消费者 红色表示队列。

Maven

<dependencies>
	<dependency>
		<groupId>com.rabbitmq</groupId>
		<artifactId>amqp-client</artifactId>
		<version>3.6.5</version>
	</dependency>
</dependencies>

封装Connection

public class MQConnectionUtils {

	public static Connection newConnection() throws IOException, TimeoutException {
		// 1.定义连接工厂
		ConnectionFactory factory = new ConnectionFactory();
		// 2.设置服务器地址
		factory.setHost("127.0.0.1");
		// 3.设置协议端口号
		factory.setPort(5672);
		// 4.设置vhost
		factory.setVirtualHost("/test001_host");
		// 5.设置用户名称
		factory.setUsername("test001");
		// 6.设置用户密码
		factory.setPassword("123456");
		// 7.创建新的连接
		Connection newConnection = factory.newConnection();
		return newConnection;
	}

}

生产者

public class Producer {
	private static final String QUEUE_NAME = "test_queue";

	public static void main(String[] args) throws IOException, TimeoutException {
		// 1.获取连接
		Connection newConnection = MQConnectionUtils.newConnection();
		// 2.创建通道
		Channel channel = newConnection.createChannel();
		// 3.创建队列声明
		channel.queueDeclare(QUEUE_NAME, false, false, false, null);
		String msg = "test_yushengjun110";
		System.out.println("生产者发送消息:" + msg);
		// 4.发送消息
		channel.basicPublish("", QUEUE_NAME, null, msg.getBytes());
		channel.close();
		newConnection.close();
	}

}

消费者

public class Customer {
	private static final String QUEUE_NAME = "test_queue";

	public static void main(String[] args) throws IOException, TimeoutException {
		System.out.println("002");
		// 1.获取连接
		Connection newConnection = MQConnectionUtils.newConnection();
		// 2.获取通道
		Channel channel = newConnection.createChannel();
		channel.queueDeclare(QUEUE_NAME, false, false, false, null);
		DefaultConsumer defaultConsumer = new DefaultConsumer(channel) {
			@Override
			public void handleDelivery(String consumerTag, Envelope envelope, BasicProperties properties, byte[] body)
					throws IOException {
				String msgString = new String(body, "UTF-8");
				System.out.println("消费者获取消息:" + msgString);
			}
		};
		// 3.监听队列
		channel.basicConsume(QUEUE_NAME, true, defaultConsumer);

	}

}

工作队列

生产者

public class Producer {
	private static final String QUEUE_NAME = "test_queue";

	public static void main(String[] args) throws IOException, TimeoutException {
		// 1.获取连接
		Connection newConnection = MQConnectionUtils.newConnection();
		// 2.创建通道
		Channel channel = newConnection.createChannel();
		// 3.创建队列声明
		channel.queueDeclare(QUEUE_NAME, false, false, false, null);
		channel.basicQos(1);// 保证一次只分发一次 限制发送给同一个消费者 不得超过一条消息
		for (int i = 1; i <= 50; i++) {
			String msg = "test_yushengjun" + i;
			System.out.println("生产者发送消息:" + msg);
			// 4.发送消息
			channel.basicPublish("", QUEUE_NAME, null, msg.getBytes());
		}
		channel.close();
		newConnection.close();
	}

}

消费者

public class Customer1 {
	private static final String QUEUE_NAME = "test_queue";

	public static void main(String[] args) throws IOException, TimeoutException {
		System.out.println("001");
		// 1.获取连接
		Connection newConnection = MQConnectionUtils.newConnection();
		// 2.获取通道
		final Channel channel = newConnection.createChannel();
		channel.queueDeclare(QUEUE_NAME, false, false, false, null);
		channel.basicQos(1);// 保证一次只分发一次 限制发送给同一个消费者 不得超过一条消息
		DefaultConsumer defaultConsumer = new DefaultConsumer(channel) {
			@Override
			public void handleDelivery(String consumerTag, Envelope envelope, BasicProperties properties, byte[] body)
					throws IOException {
				String msgString = new String(body, "UTF-8");
				System.out.println("消费者获取消息:" + msgString);
				try {
					Thread.sleep(1000);
				} catch (Exception e) {

				} finally {
					// 手动回执消息
					channel.basicAck(envelope.getDeliveryTag(), false);
				}
			}
		};
		// 3.监听队列
		channel.basicConsume(QUEUE_NAME, false, defaultConsumer);

	}

}