RabbitMQ 实现广播订阅

# 所有订阅者都可收到广播

# 生产者

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import pika, sys   connection = pika.BlockingConnection(                              pika.ConnectionParameters(host='localhost'))  # 连接本地的MQ   channel = connection.channel()   channel.exchange_declare(exchange='logs', exchange_type='fanout')   message = ' '.join(sys.argv[1:]) or 'info: Hello World!'     channel.basic_publish(exchange='logs', routing_key='', body=message) print('[x] Sent %r' % message)   connection.close()

# 消费者

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import pika   connection = pika.BlockingConnection(                        pika.ConnectionParameters(host='localhost')) channel = connection.channel()   channel.exchange_declare(exchange='logs', exchange_type='fanout') result = channel.queue_declare(exclusive=True) queue_name = result.method.queue  # queue 名称   channel.queue_bind(exchange='logs', queue=queue_name)   print('[*] Waiting for logs. To exit press CTRL+C')     def callback(ch, method, properties, body):     print('[x] %r' % body)   channel.basic_consume(callback, queue=queue_name, no_ack=True) channel.start_consuming()