RabbitMQ 发送和接收消息

依赖

<dependency>
    <groupId>com.rabbitmq</groupId>
    <artifactId>amqp-client</artifactId>
    <version>5.13.0</version>
</dependency>

public class MyRabbitFactory {
    public static Connection getConnection() throws IOException, TimeoutException {
        // 创建连接
        ConnectionFactory connectionFactory = new ConnectionFactory();
        // 设置连接地址
        connectionFactory.setHost("127.0.0.1");
        // 设置端口号:
        connectionFactory.setPort(5672);
        // 设置账号和密码
        connectionFactory.setUsername("guest");
        connectionFactory.setPassword("guest");
        // 设置VirtualHost
        connectionFactory.setVirtualHost("myvh");
        // 创建连接
        Connection connection = connectionFactory.newConnection();
        return connection;
    }
}

发送消息

public void sendMessag() throws Exception {
    Connection connection = MyRabbitFactory.getConnection();
    // 设置通道
    Channel channel = connection.createChannel();
    for (int i = 0; i < 10; i++) {
        // 设置消息
        String msg = UUID.randomUUID().toString().substring(0, 6);
        //发送消息
        channel.basicPublish("", "myqueue", null, msg.getBytes());
    }
    System.out.println("发送完成");
    channel.close();
    connection.close();
}

public void sendMessag2() throws Exception {
    Connection connection = MyRabbitFactory.getConnection();
    // 设置通道
    Channel channel = connection.createChannel();
    // 设置消息
    String msg = UUID.randomUUID().toString().substring(0, 6);
    //阻塞等待结果
    channel.confirmSelect();
    //发送消息
    channel.basicPublish("", "myqueue", null, msg.getBytes());
    System.out.println("发送完成");
    //发送结果
    boolean res = channel.waitForConfirms();
    if (res) {
        System.out.println("发送成功");
    } else {
        System.out.println("发送失败");
    }
    channel.close();
    connection.close();
}

接收消息

public void receiveMessage() throws Exception {
    Connection connection = MyRabbitFactory.getConnection();
    // 设置通道
    Channel channel = connection.createChannel();
    //实现非公平消费，设置QPS
    channel.basicQos(3);
    DefaultConsumer defaultConsumer = new DefaultConsumer(channel) {
        @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);
            //确认消息
            channel.basicAck(envelope.getDeliveryTag(),false);
        }
    };
    // 监听队列；myqueue -- 队列Name；false - 手动确认
    channel.basicConsume("myqueue", false, defaultConsumer);
}