public class MessageUtils {

    //获取mq的连接
    public static Connection getConnection() throws IOException, TimeoutException {
        //定义一个连接工厂
        ConnectionFactory factory = new ConnectionFactory();

        //设置服务地址
        factory.setHost("127.0.0.1");

        //设置端口
        factory.setPort(5672);

        //设置路径
        factory.setVirtualHost("/user_num1");

        //设置用户名
        factory.setUsername("user1");

        //设置密码
        factory.setPassword("user1");

        return factory.newConnection();
    }
}

public class MessageProduction {

    private static final String QUER_NAME = "test_simple_queue";

    public static void main(String[] args) throws IOException, TimeoutException{
        //获取一个连接
        Connection connection = MessageUtils.getConnection();
        //从连接中获取一个通道
        Channel channel = connection.createChannel();
        //声明交换机
        //fanout   分发
        channel.exchangeDeclare(QUER_NAME,"fanout");

        //发送消息
        String msg = "liujiang ";
        channel.basicPublish(QUER_NAME,"",null,msg.getBytes());

        System.out.println("send"+msg);
        //关闭通道
        channel.close();
        connection.close();
    }
}

public class MessageConsumer {

    private static final String QUER_NAME1 = "test_simple_queue2";
    private static final String QUER_NAME = "test_simple_queue";

    public static void main(String[] args) throws IOException, TimeoutException, InterruptedException {
        //获取连接
        Connection connection = MessageUtils.getConnection();
        //创建频道
        final Channel channel = connection.createChannel();
        //队列声明
        channel.queueDeclare(QUER_NAME1,false,false,false,null);
        //绑定队列到交换机转发器
        channel.queueBind(QUER_NAME1,QUER_NAME,"");
        //保证每次之分发一个
        channel.basicQos(1);
        //定义消费者
        DefaultConsumer consumer = new DefaultConsumer(channel){
            //获取消息
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope,
                                       AMQP.BasicProperties properties, byte[] body) throws IOException {
                super.handleDelivery(consumerTag, envelope, properties, body);
                String message = new String(body, "UTF-8");
                System.out.println("消费者[1]  msg："+message.getBytes());

                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }finally {
                    System.out.println("[1] done");
                    channel.basicAck(envelope.getDeliveryTag(),false);
                }
            }
        };
        //自动应答
        boolean autoAck = false;
        //监听队列
        channel.basicConsume(QUER_NAME1, autoAck, consumer);
    }

    }