RabbitMQ

rabbitmq官网：https://www.rabbitmq.com/

rabbitmq是erlang开发的，需要安装erlang环境

Erlang是一种功能编程语言，也具有运行时环境。

Erlang官网：https://www.erlang.org/

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获取连接

public class RabbitMQConnection {
    public static Connection getConnection() throws IOException, TimeoutException {
        ConnectionFactory connectionFactory = new ConnectionFactory();
        // 设置连接虚拟机
        connectionFactory.setVirtualHost("/meiteVirtualHosts");
        // 设置账号密码
        connectionFactory.setUsername("guest");
        connectionFactory.setPassword("guest");
        // 设置ip和端口
        connectionFactory.setHost("127.0.0.1");
        connectionFactory.setPort(5672);
        return connectionFactory.newConnection();
    }
}

生产者

public class Producer {
    public static final String QUEUE_NAME = "queue-name";
    public static void main(String[] args) throws IOException, TimeoutException {
        // 创建连接
        Connection connection = RabbitMQConnection.getConnection();
        // 创建通道
        Channel channel = connection.createChannel();
        String msg = "消息-" + new Date();
        // 发布消息到队列
        channel.basicPublish("",QUEUE_NAME,null,msg.getBytes());
        // 关闭通道和连接
        channel.close();
        connection.close();
    }
}

消费者

public class Comsumer {
    public static final String QUEUE_NAME = "queue-name";
    public static void main(String[] args) throws IOException, TimeoutException {
        // 创建连接
        Connection connection = RabbitMQConnection.getConnection();
        // 创建通道
        Channel channel = connection.createChannel();
        // 消费消息
        DefaultConsumer defaultConsumer = new DefaultConsumer(channel) {
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
                System.out.println("消费者：" + new String(body, StandardCharsets.UTF_8));
            }
        };
        // 监听队列 autoAck：true自动签收，false手动签收
        channel.basicConsume(QUEUE_NAME,true,defaultConsumer);
        // 长连接不必关闭通道
        //channel.close();
        //connection.close();
    }
}