RabbitMQ-简单队列

模型

graph LR
生产者 -->id[queue]
id[queue]--> 消费者

获取连接

public static Connection getConnection() throws IOException, TimeoutException {
        ConnectionFactory connectionFactory = new ConnectionFactory();
        connectionFactory.setHost("localhost");
        connectionFactory.setPort(5672);
        connectionFactory.setVirtualHost("/vhost_ct");
        connectionFactory.setUsername("guest");
        connectionFactory.setPassword("guest");
        return connectionFactory.newConnection();
}

生产者Producer

public class Send {
 
    private static final String QUEUE_NAME = "test_simple_queue";
 
    public static void main(String[] a) throws IOException, TimeoutException {
        //获取一个链接
        Connection connection = ConnectionUtil.getConnection();
        //从链接中获取一个通道
        Channel channel = connection.createChannel();
 
        //创建队列声明
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);
 
        String msg = "hello_simple";
        //发布
        channel.basicPublish("", QUEUE_NAME, null, msg.getBytes());
        System.out.println("send:" + msg);
        channel.close();
        connection.close();
    }
}

消费者 Consumer

public class Recv {
 
    private static final String QUEUE_NAME = "test_simple_queue";
 
    public static void main(String[] a) throws IOException, TimeoutException {
        //获取一个链接
        Connection connection = ConnectionUtil.getConnection();
        //从链接中获取一个通道
        Channel channel = connection.createChannel();
 
        //定义队列
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);
 
        DefaultConsumer defaultConsumer = new DefaultConsumer(channel) {
            //获取到达的消息
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                                       byte[] body) throws IOException {
                String msg = new String(body, "utf-8");
                System.out.println(msg);
            }
        };
        //监听队列
        channel.basicConsume(QUEUE_NAME, true, defaultConsumer);
    }
}

不足之处

耦合性较高，生产者和消费者一一对应，修改队列名，生产者和消费者需同时修改