1.RabbitDemo

文章参考：Rabbit实战指南
生产者客户端代码

public class RabbitProducer{
    private static final String EXCHANGE_NAME = "exchange_demo";
    private static final String ROUTING_KEY = "routingkey_demo";
    private static final String QUEUE_NAME = "queue_demo";
    private static final String IP_ADDRESS = "10.20.12.211";
    private static final int PORT = 5672; //RabbitMQ服务端默认端口号

    public static void main(String[] args) throws IOException,TimeoutException,InterruptedException{
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost(IP_ADDRESS);
        factory.setUsername("guest");
        factory.setPassword("guest");
        //创建连接
        Connection connection = factory.newConnection();
        //创建信道
        Channel channel = connection.createChannel();
        //创建一个type='direct'、持久化的、非自动删除的队列
        channel.exchangeDeclare(EXCHANGE_NAME,"direct",true,false,null);
        //创建一个持久化、非排他的、非自动删除的队列
        channel.queueDeclare(QUEUE_NAME,true,false,false,null);
        //将交换器与队列通过路由键绑定
        channel.queueBind(QUEUE_NAME,EXCHANGE_NAME,ROUTING_KEY);
        //发送一条持久化的信息：hello world！
        String message = "hello world!";
        channel.basicPublish(EXCHANGE_NAME,ROUTING_KEY,
                MessageProperties.PERSISTENT_TEXT_PLAIN,
                message.getBytes());
        //关闭资源
        channel.close();
        connection.close();
    }
}

消费者客户端代码

public class RabbitConsumer{
    private static final String QUEUE_NAME = "queue_demo";
    private static final String IP_ADDRESS = "10.20.12.211";
    private static final int PORT = 5672;

    public static void main(String[] args) throws IOException, TimeoutException,
            InterruptedException{
        Address[] address = new Address[]{
          new Address(IP_ADDRESS,PORT)
        };
        ConnectionFactory factory = new ConnectionFactory();
        factory.setUsername("zhou_jiangcheng");
        factory.setPassword("zhou19970407");
        //这里的连接方式和生产者的demo略有不同
        //创建连接
        Connection connection = factory.newConnection(address);
        //创建信道
        final Channel channel = connection.createChannel();
        //设置客户端最多接受违背ack的消息的个数
        channel.basicQos(64);
        Consumer consumer = new DefaultConsumer(channel){
            @Override
            public void handleDelivery(String consumerTag,Envelope envelope,
                                       AMQP.BasicProperties properties,
                                       byte[] body) throws IOException{
                System.out.println("recv message:" + new String(body));
                try{
                    TimeUnit.SECONDS.sleep(1);
                } catch (InterruptedException e){
                    e.printStackTrace();
                }
                channel.basicAck(envelope.getDeliveryTag(),false);
            }
        };
        channel.basicConsume(QUEUE_NAME,consumer);
        //等待回调函数执行完毕之后，关闭资源
        TimeUnit.SECONDS.sleep(5);
        channel.close();
        connection.close();
    }
}

channel.basicConsume(QUEUE_NAME,true,consumer);

若autoAck为true，可以不用使用channel.basicAck(envelope.getDeliveryTag(),false);进入到handleDelivery()时，全部消费。

channel.basicConsume(QUEUE_NAME,consumer);

若autoAck为false，必须使用channel.basicAck(envelope.getDeliveryTag(),false);进入到handleDelivery()时，消息全部进入到unacked状态，最后才全部执行完。